CDAI=composite index for assessing disease activity (DA) based on summation of four components: TJC and SJC (both out of 28 evaluated joints), patient global assessment of DA and physician global assessment of DA, both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score range: 0 to 76 where lower scores=lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate DA and score >22 indicated high DA. Data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy (first line: no prior use of any disease modifying antirheumatic drug [DMARD]) and by each line of therapy, second line: participants with prior use of at least 1 conventional synthetic (cs) DMARD and no prior use of any biologic; third line: participants with prior use of any csDMARDs and 1 biologic and fourth line: participants with prior use of any csDMARDs and more than 2 biologics.

CDAI=composite index for assessing DA based on numerical summation of four components: TJC and SJC (both out of 28 evaluated joints), patient global assessment of DA and physician global assessment of DA, both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score range: 0 to 76 where lower scores=lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate DA and score >22 indicated high DA. Data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy (first line: no prior use of any DMARD) and by each line of therapy, second line: participants with prior use of at least 1 csDMARD and no prior use of any biologic; third line: participants with prior use of any csDMARDs and 1 biologic and fourth line: participants with prior use of any csDMARDs and more than 2 biologics.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported by dose of tofacitinib at initiation i.e. 5 mg twice daily (BID) or 11 mg once daily (QD).

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported by dose of tofacitinib at initiation i.e. 5 mg BID or 11 mg QD.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported by year of tofacitinib initiation (2012-2014, 2015-2017, 2018-2020).

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported by year of tofacitinib initiation (2012-2014, 2015-2017, 2018-2020).

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

HAQ is a self-reported, valid assessment of functional disability in rheumatoid arthritis. The 20-question instrument assessed ability of participants to perform daily activities in 8 functional areas:dressing,arising,eating,walking,reaching,gripping,hygiene,and carrying out daily activities. Responses in each functional area were scored from 0=no difficulty to 3=inability to perform a task in that area. Total score=sum of domain scores and divided by number of domains answered. Total scores range from 0 to 3 where 0=least difficulty and 3=extreme difficulty. Higher scores indicated worse functioning. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Participants were asked to assess the level of fatigue by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Higher scores indicated worsening of fatigue. In this outcome measure, data is reported for overall tofa initiators and participants who initiated tofacitinib as either monotherapy or as combination therapy.

mACR20 response: >= 20 percent (%) improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

mACR50 response: >= 50% improvement in tender and swollen joint count and 50% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

mACR70 response: >= 70% improvement in tender and swollen joint count and 70% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

DAS28 is a measure of disease activity in participants with rheumatoid arthritis, derived using differential weighting given to each of the four components. Components included: TJC with 28 joints assessed, SJC with 28 joints assessed, ESR (mm per hour) and patient's global assessment (PtGA) recorded on 100 mm VAS (scores ranging 0 [no disease activity] to 100 mm [maximum disease activity]), higher scores=more disease activity. DAS28 (ESR) was calculated as 0.56*sqrt (TJC28)+0.28*sqrt (SJC28)+0.70*ln (ESR [mm/hour]+0.014*PtGA [mm]; where, ln=natural logarithm, sqrt=square root of. Total score range: 0 to 9.4, higher score=more disease activity. DAS28(ESR) score of <=3.2 indicated LDA or remission. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy, participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. Mild pain was defined as <=20 mm on 100 mm VAS scale in those participants who had pain >20 mm on 100 mm VAS at the initiation visit. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=2.8 indicated remission. Data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy (first line: no prior use of any DMARD) and by each line of therapy including second line: participants with prior use of at least 1 csDMARD and no prior use of any biologic; third line: participants with prior use of any csDMARDs and 1 biologic and fourth line: participants with prior use of any csDMARDs and more than 2 biologics.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

HAQ is a self-reported, valid assessment of functional disability in rheumatoid arthritis. The 20-question instrument assessed ability of participants to perform daily activities in 8 functional areas: dressing, arising, eating, walking, reaching, gripping, hygiene, and carrying out daily activities. Responses in each functional area were scored from 0=no difficulty to 3=inability to perform a task in that area. Total score was computed as the sum of domain scores and divided by the number of domains answered. Total scores range from 0 to 3 where 0 = least difficulty and 3 = extreme difficulty. Higher scores indicated worse functioning. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Participants were asked to assess the level of fatigue by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Higher scores indicated worsening of fatigue. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

mACR20 response: >= 20% improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

mACR50 response: >= 50% improvement in tender and swollen joint count and 50% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

mACR70 response: >= 70% improvement in tender and swollen joint count and 70% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

DAS28 is a measure of disease activity in participants with rheumatoid arthritis, derived using differential weighting given to each of the four components. The components of the DAS28 (ESR) assessment included: TJC with 28 joints assessed, SJC with 28 joints assessed, ESR (mm per hour) and PtGA recorded on 100 mm VAS (scores ranging 0 [no disease activity] to 100 mm [maximum disease activity]), higher scores indicated more disease activity. DAS28 (ESR) was calculated as 0.56*sqrt (TJC28) + 0.28*sqrt (SJC28) + 0.70*ln (ESR [mm/hour] + 0.014*PtGA [mm]; where, ln = natural logarithm, sqrt = square root of. Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28(ESR) score of <=3.2 indicated LDA or remission. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. Mild pain was defined as <=20 mm on 100 mm VAS scale in those participants who had pain >20 mm on 100 mm VAS at the initiation visit. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=2.8 indicated remission. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

HAQ is a self-reported, valid assessment of functional disability in rheumatoid arthritis. The 20-question instrument assessed ability of participants to perform daily activities in 8 functional areas: dressing, arising, eating, walking, reaching, gripping, hygiene, and carrying out daily activities. Responses in each functional area were scored from 0=no difficulty to 3=inability to perform a task in that area. Total score was computed as the sum of domain scores and divided by the number of domains answered. Total scores range from 0 to 3 where 0 = least difficulty and 3 = extreme difficulty. Higher scores indicated worse functioning. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Participants were asked to assess the level of fatigue by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Higher scores indicated worsening of fatigue. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

mACR20 response: >= 20% improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

mACR50 response: >= 50% improvement in tender and swollen joint count and 50% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

mACR70 response: >= 70% improvement in tender and swollen joint count and 70% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

DAS28 is a measure of disease activity in participants with rheumatoid arthritis, derived using differential weighting given to each of the four components. The components of the DAS28 (ESR) assessment included: TJC with 28 joints assessed, SJC with 28 joints assessed, ESR (mm per hour) and PtGA recorded on 100 mm VAS (scores ranging 0 [no disease activity] to 100 mm [maximum disease activity]), higher scores indicated more disease activity. DAS28 (ESR) was calculated as 0.56*sqrt (TJC28) + 0.28*sqrt (SJC28) + 0.70*ln (ESR [mm/hour] + 0.014*PtGA [mm]; where, ln = natural logarithm, sqrt = square root of. Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28(ESR) score of <=3.2 indicated LDA or remission. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. Mild pain was defined as <=20 mm on 100 mm VAS scale in those participants who had pain >20 mm on 100 mm VAS at the initiation visit. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=2.8 indicated remission. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

HAQ is a self-reported, valid assessment of functional disability in rheumatoid arthritis. The 20-question instrument assessed ability of participants to perform daily activities in 8 functional areas: dressing, arising, eating, walking, reaching, gripping, hygiene, and carrying out daily activities. Responses in each functional area were scored from 0=no difficulty to 3=inability to perform a task in that area. Total score was computed as the sum of domain scores and divided by the number of domains answered. Total scores range from 0 to 3 where 0 = least difficulty and 3 = extreme difficulty. Higher scores indicated worse functioning. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

Participants were asked to assess the level of fatigue by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Higher scores indicated worsening of fatigue. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

mACR20 response: >= 20% improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

mACR50 response: >= 50% improvement in tender and swollen joint count and 50% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

mACR70 response: >= 70% improvement in tender and swollen joint count and 70% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

DAS28 is a measure of disease activity in participants with rheumatoid arthritis, derived using differential weighting given to each of the four components. The components of the DAS28 (ESR) assessment included: TJC with 28 joints assessed, SJC with 28 joints assessed, ESR (mm per hour) and PtGA recorded on 100 mm VAS (scores ranging 0 [no disease activity] to 100 mm [maximum disease activity]), higher scores indicated more disease activity. DAS28 (ESR) was calculated as 0.56*sqrt (TJC28) + 0.28*sqrt (SJC28) + 0.70*ln (ESR [mm/hour] + 0.014*PtGA [mm]; where, ln = natural logarithm, sqrt = square root of. Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28(ESR) score of <=3.2 indicated LDA or remission. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. Mild pain was defined as <=20 mm on 100 mm VAS scale in those participants who had pain >20 mm on 100 mm VAS at the initiation visit. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

Here, 'Number Analyzed' signifies participants evaluable for this baseline characteristic

Here, 'Number Analyzed' signifies participants evaluable for this baseline characteristic.

One participant could have more than one type of insurance.

Here 'Number Analyzed' signifies participants evaluable for this baseline characteristic.

Here 'Number Analyzed' signifies participants evaluable for this baseline characteristic.

Here 'Number Analyzed' signifies participants evaluable for this baseline characteristic.

Here Number Analyzed' signifies participants evaluable for this baseline characteristic.

Here Number Analyzed' signifies participants evaluable for this baseline characteristic.

One participant may have more than one comorbidity.

Here Number Analyzed' signifies participants evaluable for specific categories in this baseline characteristic.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: tender joint count (TJC) and swollen joint count ([SJC] both out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable at specified category.

CDAI=composite index for assessing disease activity (DA) based on summation of four components: TJC and SJC (both out of 28 evaluated joints), patient global assessment of DA and physician global assessment of DA, both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score range: 0 to 76 where lower scores=lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate DA and score >22 indicated high DA. Data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy (first line: no prior use of any disease modifying antirheumatic drug [DMARD]) and by each line of therapy, second line: participants with prior use of at least 1 conventional synthetic (cs) DMARD and no prior use of any biologic; third line: participants with prior use of any csDMARDs and 1 biologic and fourth line: participants with prior use of any csDMARDs and more than 2 biologics.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI=composite index for assessing DA based on numerical summation of four components: TJC and SJC (both out of 28 evaluated joints), patient global assessment of DA and physician global assessment of DA, both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score range: 0 to 76 where lower scores=lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate DA and score >22 indicated high DA. Data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy (first line: no prior use of any DMARD) and by each line of therapy, second line: participants with prior use of at least 1 csDMARD and no prior use of any biologic; third line: participants with prior use of any csDMARDs and 1 biologic and fourth line: participants with prior use of any csDMARDs and more than 2 biologics.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported by dose of tofacitinib at initiation i.e. 5 mg twice daily (BID) or 11 mg once daily (QD).

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported by dose of tofacitinib at initiation i.e. 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported by year of tofacitinib initiation (2012-2014, 2015-2017, 2018-2020).

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=10 indicated LDA; score between >10 and <=22 indicated moderate disease activity and score >22 indicated high disease activity. In this outcome measure, data is reported by year of tofacitinib initiation (2012-2014, 2015-2017, 2018-2020).

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=2.8 indicated remission. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Number Analyzed" signifies number of participants evaluable for specified category.

HAQ is a self-reported, valid assessment of functional disability in rheumatoid arthritis. The 20-question instrument assessed ability of participants to perform daily activities in 8 functional areas:dressing,arising,eating,walking,reaching,gripping,hygiene,and carrying out daily activities. Responses in each functional area were scored from 0=no difficulty to 3=inability to perform a task in that area. Total score=sum of domain scores and divided by number of domains answered. Total scores range from 0 to 3 where 0=least difficulty and 3=extreme difficulty. Higher scores indicated worse functioning. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess the level of fatigue by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Higher scores indicated worsening of fatigue. In this outcome measure, data is reported for overall tofa initiators and participants who initiated tofacitinib as either monotherapy or as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Number Analyzed" signifies number of participants evaluable for specified category.

mACR20 response: >= 20 percent (%) improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

mACR50 response: >= 50% improvement in tender and swollen joint count and 50% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

mACR70 response: >= 70% improvement in tender and swollen joint count and 70% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

DAS28 is a measure of disease activity in participants with rheumatoid arthritis, derived using differential weighting given to each of the four components. Components included: TJC with 28 joints assessed, SJC with 28 joints assessed, ESR (mm per hour) and patient's global assessment (PtGA) recorded on 100 mm VAS (scores ranging 0 [no disease activity] to 100 mm [maximum disease activity]), higher scores=more disease activity. DAS28 (ESR) was calculated as 0.56*sqrt (TJC28)+0.28*sqrt (SJC28)+0.70*ln (ESR [mm/hour]+0.014*PtGA [mm]; where, ln=natural logarithm, sqrt=square root of. Total score range: 0 to 9.4, higher score=more disease activity. DAS28(ESR) score of <=3.2 indicated LDA or remission. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy, participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. Mild pain was defined as <=20 mm on 100 mm VAS scale in those participants who had pain >20 mm on 100 mm VAS at the initiation visit. In this outcome measure, data is reported separately for overall number of participants who initiated tofacitinib as either monotherapy or as combination therapy (i.e. tofacitinib in combination with methotrexate, arava, azulfidine, plaquenil, or cyclosporine), participants who initiated tofacitinib as monotherapy and participants who initiated tofacitinib as combination therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=2.8 indicated remission. Data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy (first line: no prior use of any DMARD) and by each line of therapy including second line: participants with prior use of at least 1 csDMARD and no prior use of any biologic; third line: participants with prior use of any csDMARDs and 1 biologic and fourth line: participants with prior use of any csDMARDs and more than 2 biologics.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

HAQ is a self-reported, valid assessment of functional disability in rheumatoid arthritis. The 20-question instrument assessed ability of participants to perform daily activities in 8 functional areas: dressing, arising, eating, walking, reaching, gripping, hygiene, and carrying out daily activities. Responses in each functional area were scored from 0=no difficulty to 3=inability to perform a task in that area. Total score was computed as the sum of domain scores and divided by the number of domains answered. Total scores range from 0 to 3 where 0 = least difficulty and 3 = extreme difficulty. Higher scores indicated worse functioning. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess the level of fatigue by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Higher scores indicated worsening of fatigue. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

mACR20 response: >= 20% improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

mACR50 response: >= 50% improvement in tender and swollen joint count and 50% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

mACR70 response: >= 70% improvement in tender and swollen joint count and 70% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

DAS28 is a measure of disease activity in participants with rheumatoid arthritis, derived using differential weighting given to each of the four components. The components of the DAS28 (ESR) assessment included: TJC with 28 joints assessed, SJC with 28 joints assessed, ESR (mm per hour) and PtGA recorded on 100 mm VAS (scores ranging 0 [no disease activity] to 100 mm [maximum disease activity]), higher scores indicated more disease activity. DAS28 (ESR) was calculated as 0.56*sqrt (TJC28) + 0.28*sqrt (SJC28) + 0.70*ln (ESR [mm/hour] + 0.014*PtGA [mm]; where, ln = natural logarithm, sqrt = square root of. Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28(ESR) score of <=3.2 indicated LDA or remission. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. Mild pain was defined as <=20 mm on 100 mm VAS scale in those participants who had pain >20 mm on 100 mm VAS at the initiation visit. In this outcome measure, data is reported for overall tofacitinib initiators who initiated tofacitinib as first, second, third or fourth line of therapy and by each line of therapy including second line, third line and fourth line of therapy.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=2.8 indicated remission. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

HAQ is a self-reported, valid assessment of functional disability in rheumatoid arthritis. The 20-question instrument assessed ability of participants to perform daily activities in 8 functional areas: dressing, arising, eating, walking, reaching, gripping, hygiene, and carrying out daily activities. Responses in each functional area were scored from 0=no difficulty to 3=inability to perform a task in that area. Total score was computed as the sum of domain scores and divided by the number of domains answered. Total scores range from 0 to 3 where 0 = least difficulty and 3 = extreme difficulty. Higher scores indicated worse functioning. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess the level of fatigue by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Higher scores indicated worsening of fatigue. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

mACR20 response: >= 20% improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

mACR50 response: >= 50% improvement in tender and swollen joint count and 50% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

mACR70 response: >= 70% improvement in tender and swollen joint count and 70% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsening of pain); 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsening of condition); 4) self-assessed disability index of the HAQ (scored from 0 to 3, higher scores indicated worsening of function). In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

DAS28 is a measure of disease activity in participants with rheumatoid arthritis, derived using differential weighting given to each of the four components. The components of the DAS28 (ESR) assessment included: TJC with 28 joints assessed, SJC with 28 joints assessed, ESR (mm per hour) and PtGA recorded on 100 mm VAS (scores ranging 0 [no disease activity] to 100 mm [maximum disease activity]), higher scores indicated more disease activity. DAS28 (ESR) was calculated as 0.56*sqrt (TJC28) + 0.28*sqrt (SJC28) + 0.70*ln (ESR [mm/hour] + 0.014*PtGA [mm]; where, ln = natural logarithm, sqrt = square root of. Total score range: 0 to 9.4, higher score indicated more disease activity. DAS28(ESR) score of <=3.2 indicated LDA or remission. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

Participants were asked to assess their level of pain by marking a vertical tick on a 100 mm horizontal VAS scale. The scale ranged from 0-100 mm, where 0 mm = no pain and 100 mm = worst possible pain. Higher scores indicated worsening of pain. Mild pain was defined as <=20 mm on 100 mm VAS scale in those participants who had pain >20 mm on 100 mm VAS at the initiation visit. In this outcome measure, data is reported for participants who administered tofacitinib dose as either 5 mg BID or 11 mg QD.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. A score of <=2.8 indicated remission. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Overall Number of Participants Analyzed' signifies number of participants evaluable for this outcome measure and "Number Analyzed" signifies number of participants evaluable for specified category.

CDAI is a composite index for assessing disease activity based on the numerical summation of four components: TJC (out of 28 evaluated joints) and SJC (out of 28 evaluated joints), patient global assessment of disease activity and physician global assessment of disease activity both measured on a VAS from 0 to 100 mm; higher scores=higher disease activity. CDAI total score ranged from 0 to 76 where lower scores indicated lower disease activity. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Number Analyzed" signifies number of participants evaluable for specified category.

HAQ is a self-reported, valid assessment of functional disability in rheumatoid arthritis. The 20-question instrument assessed ability of participants to perform daily activities in 8 functional areas: dressing, arising, eating, walking, reaching, gripping, hygiene, and carrying out daily activities. Responses in each functional area were scored from 0=no difficulty to 3=inability to perform a task in that area. Total score was computed as the sum of domain scores and divided by the number of domains answered. Total scores range from 0 to 3 where 0 = least difficulty and 3 = extreme difficulty. Higher scores indicated worse functioning. In this outcome measure, data is reported for participants who initiated tofacitinib in different initiation years (2012-2014, 2015-2017, 2018-2020), were reported.

Analysis population included all eligible participants who initiated tofacitinib on or after November 2012 and had 6 months and 12 months follow-up. Here, "Number Analyzed" signifies number of participants evaluable for specified category.