ACR20 was calculated as a ≥20% improvement from baseline in tender/painful and swollen joint counts and ≥20% improvement from baseline in 3 of the 5 remaining ACR core set measures: patient's global assessment of arthritis, physician's global assessment of arthritis, patient's assessment of arthritis pain, Health Assessment Questionnaire - Disability Index (HAQ-DI), and C-reactive protein (CRP).

All participants who were randomized and received at least 1 dose of study drug.

The HAQ-DI assesses the difficulty a patient has had in the past week in 8 domains of daily living activities: dressing and grooming, arising, eating, walking, hygiene, reach, grip, and other activities. Each activity category consists of 2-3 items. For each question, level of difficulty is scored from 0 to 3 with 0=no difficulty, 1=some difficulty, 2=much difficulty, and 3=unable to do. The score for each domain is the maximum (worst) score from the items/questions within the domain. Higher score indicates greater disability. Overall score was computed as the sum of the domain scores divided by the number of domains answered. The total possible score ranged from 0 to 3 where 0 = least difficulty and 3 = extreme difficulty. Higher overall score indicates greater disability.

All participants who were randomized, received at least 1 dose of study drug, and were evaluable.

ACR50 was calculated as a ≥50% improvement from baseline in tender /painful and swollen joint counts and ≥50% improvement from baseline in 3 of the 5 remaining ACR core set measures: patient's global assessment of arthritis, physician's global assessment of arthritis, patient's assessment of arthritis pain, HAQ-DI, and CRP. n=number of responders.

All participants who were randomized and received at least 1 dose of study drug.

ACR70 was calculated as a ≥70% improvement from baseline in tender /painful and swollen joint counts and ≥70% improvement from baseline in 3 of the 5 remaining ACR core set measures: patient's global assessment of arthritis, physician's global assessment of arthritis, patient's assessment of arthritis pain, HAQ-DI, and CRP. n=number of responders.

All participants who were randomized and received at least 1 dose of study drug.

ACR20 was calculated as a ≥20% improvement from baseline in tender /painful and swollen joint counts and ≥20% improvement from baseline in 3 of the 5 remaining ACR core set measures: patient's global assessment of arthritis, physician's global assessment of arthritis, patient's assessment of arthritis pain, HAQ-DI, and CRP. n=number of responders.

All participants who were randomized and received at least 1 dose of study drug.

The HAQ-DI assesses the difficulty a patient has had in the past week in 8 domains of daily living activities: dressing and grooming, arising, eating, walking, hygiene, reach, grip, and other activities. Each activity category consists of 2-3 items. For each question, level of difficulty is scored from 0 to 3 with 0=no difficulty, 1=some difficulty, 2=much difficulty, and 3=unable to do. The score for each domain is the maximum (worst) score from the items/questions within the domain. Higher score indicates greater disability. Overall score was computed as the sum of the domain scores divided by the number of domains answered. The total possible score ranged from 0 to 3 where 0 = least difficulty and 3 = extreme difficulty. Higher overall score indicates greater disability. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug, and were evaluable.

The test for CRP is a laboratory measurement for evaluation of an acute phase reactant of inflammation through the use of an ultrasensitive assay. A decrease in the level of CRP indicates reduction in inflammation and therefore improvement.

All participants who were randomized, received at least 1 dose of study drug, and were evaluable

Participants assessed the severity of their arthritis pain using a 100 mm visual analog scale (VAS) by placing a mark on the scale between 0 (no pain) and 100 (most severe pain), which corresponded to the magnitude of their pain.

All participants who were randomized, received at least 1 dose of study drug, and were evaluable.

Participants answered the following question, "Considering all the ways your arthritis affects you, how are you feeling today?" The participant's response was recorded using a 100 mm VAS by placing a mark on the scale between 0 (very well) and 100 (very poorly).

All participants who were randomized, received at least 1 dose of study drug, and were evaluable

The blinded investigator or qualified assessor assessed how the participant's overall arthritis appeared at the time of the visit. This was an evaluation based on the participant's disease signs, functional capacity and physical examination, and was independent of the Patient's Global Assessment of Arthritis. The investigator's response was recorded using a 100 mm VAS by placing a mark on the scale between 0 (very good) and 100 (very poor).

All participants who were randomized, received at least 1 dose of study drug, and were evaluable.

Swollen joint counts are considered the most specific quantitative clinical measure used to assess the status of participants with inflammatory types of arthritis. Sixty six (66) joints were assessed by a blinded assessor to determine the number of joints that were considered swelling.

All participants who were randomized, received at least 1 dose of study drug, and were evaluable.

Tender/painful joint counts are considered the most specific quantitative clinical measure used to assess the status of participants with inflammatory types of arthritis. Sixty eight (68) joints were assessed by a blinded assessor to determine the number of joints that were considered tender or painful.

All participants who were randomized, received at least 1 dose of study drug, and were evaluable.

The PsARC covers 4 measures: Tender joint count, swollen joint count, the Physician's Global Assessment of Arthritis, and the Patient's Global Assessment of Arthritis. The PsARC response is defined as improvement in 2 of 4 items, 1 of which must be joint pain or swelling, without worsening in any measure. Improvement criteria: ≥20% improvement in Physician's Global Assessment of Arthritis; ≥20% improvement in Patient's Global Assessment of Arthritis; ≥30% improvement in tender joint count; and ≥30% improvement in swollen joint count. n=number of responders.

All participants who were randomized and received at least 1 dose of study drug.

The PGA-PsO is scored on a 5-point scale, reflecting a global consideration of the erythema, induration, and scaling across all psoriatic lesions. Average erythema, induration, and scaling are rated separately over the whole body according to a 5-point severity scale, scored as 0=none; 1, 2, 3, or 4=most severe. The severity rating scores are summed and the average taken; the total average is rounded to the nearest whole number score to determine the PGA-PsO score on a scale of 0 to 4 (0=clear, 1=almost clear, 2=mild, 3=moderate, 4=severe). n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug with baseline PGA-PsO >0, and were evaluable.

PASI determines psoriasis severity based on lesion severity and percentage of body surface area (BSA) affected. Lesion severity is assessed for erythema, induration, and scaling evaluated separately for the head and neck, upper limbs, trunk, and lower limbs and then rated for each body area according to a 5 point scale: 0=no involvement; 1=slight; 2=moderate; 3=marked; 4=very marked. BSA involvement is the extent (%) of body area affected by psoriasis and is assigned a numerical score: 0=no involvement; 1=0% to 9%; 2=10% to 29%; 3=30% to 49%; 4=50% to 69%; 5=70% to 89%; 6=90% to 100%. In each area, the sum of the severity rating scores is multiplied by the score representing the percentage of this area involved by psoriasis, multiplied by a weighting factor (head 0.1; upper limbs 0.2; trunk 0.3; lower limbs 0.4). The sum of the numbers obtained for each of the 4 body areas is the PASI. PASI75 is defined as a 75% reduction from baseline in PASI. n=number of responders.

All participants who were randomized and received at least 1 dose of study drug with PASI >0 and BSA ≥3% at baseline.

Dactylitis is characterized by swelling of the entire finger or toe. The DSS is a function of finger circumference and tenderness, assessed and summed across all dactylitic digits. The severity of dactylitis is scored on a scale of 0-3, where 0=tenderness and 3=extreme tenderness in each digit of the hands and feet. The range of total dactylitis scores for a participant is 0-60. Higher score indicates greater degree of tenderness. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug with baseline DSS >0, and were evaluable.

The SPARCC Enthesitis Index identifies the presence or absence of tenderness at 16 enthesial sites, including the bilateral Achilles tendons, plantar fascia insertion at the calcaneus, patellar tendon insertion at the base of the patella, quadriceps insertion into the superior border of the patella, supraspinatus insertion into the greater tuberosity of the humerus, and medial and lateral epicondyles. On examination, tenderness is recorded as present (1) or absent (0) for each of the 16 sites, with an overall total score ranging from 0 to 16. Higher score indicates a greater number of sites that are affected by enthesitis. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug with baseline SPARCC Enthesitis Score >0, and were evaluable.

Enthesitis is inflammation in the tendon, ligament, and joint capsule fiber insertion into bone. The LEI assesses enthesitis in 6 sites. Tenderness is recorded as either present (1) or absent (0) for each of the 6 sites, for a total score of 0-6. Higher score indicates greater severity of enthesitis. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug with baseline LEI >0, and were evaluable.

The SF-36v2 acute is a 36-item measure that evaluates 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The health domains are aggregated into two summary scores known as the physical component summary (PCS) score and the mental component summary (MCS) score. Normalized domain scores, PCS and MCS scores are used in the analyses. The component and domain scores were scored using the United States (US) 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 and SF36 health domain scales and component summary measures have means of 50 and standard deviations of 10. A higher PCS score represents better physical health status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug, and were evaluable.

The SF-36v2 acute is a 36-item measure that evaluates 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The health domains are aggregated into two summary scores known as the PCS score and the MCS score. Normalized domain scores, PCS and MCS scores are used in the analyses. The component and domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 and SF36 health domain scales and component summary measures have means of 50 and standard deviations of 10. A higher MCS score represents better mental health status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

SF-36v2 acute is a 36-item measure evaluating 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, & mental health. The 10 items of the physical functioning scale represent levels & kinds of limitations between extremes of physical activities, including lifting & carrying groceries; climbing stairs; bending, kneeling, or stooping; walking moderate distances; self-care limitations. The physical functioning items capture the presence & extent of physical limitations using a 3-level response continuum. The domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 & SF36 health domain scales & component summary measures have means of 50 & standard deviations of 10. A higher physical functioning domain score represents better physical functioning. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

SF-36v2 acute is a 36-item measure evaluating 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, & mental health. The 4-item role-physical scale covers an array of physical health-related role limitations, including: a) limitations in the kind of work or other usual activities; b) reductions in the amount of time spent on work or other usual activities; c) difficulty performing work or other usual activities; & d) accomplishing less. Items in the role-physical scale are answered on a 5-point scale. The domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 & SF36 health domain scales & component summary measures have means of 50 & standard deviations of 10. A higher role-physical domain score represents better role-physical functioning. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The SF-36v2 acute is a 36-item measure that evaluates 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The bodily pain scale comprises of 2 items pertaining to the intensity of bodily pain and extent of interference with normal work activities. The domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 & SF36 health domain scales & component summary measures have means of 50 & standard deviations of 10. A higher bodily pain domain score represents less bodily pain. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The SF-36v2 acute is a 36-item measure that evaluates 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The general health scale consists of 5 items including a rating of health and 4 items addressing the respondent's view and expectations of his or her health. The domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 & SF36 health domain scales & component summary measures have means of 50 & standard deviations of 10. A higher general health domain score represents better general health perceptions. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The SF-36v2 acute is a 36-item measure that evaluates 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The 4-item measure of vitality captures a broad range of subjective evaluations of well-being from feelings of tiredness and being worn out to feeling full of energy all or most of the time. The domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 & SF36 health domain scales & component summary measures have means of 50 & standard deviations of 10. A higher vitality domain score represents better vitality. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The SF-36v2 acute is a 36-item measure that evaluates 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The 2-item social functioning scale assesses health-related effects on quantity and quality of social activities. The domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 & SF36 health domain scales & component summary measures have means of 50 & standard deviations of 10. A higher social functioning domain score represents better social functioning. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The SF-36v2 acute is a 36-item measure that evaluates 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The 3-item role-emotional scale assesses mental health-related role limitations in terms of a) time spent in work or other usual activities; b) amount of work or activities accomplished; c) care with which work or other activities were performed. All 3 items are answered on a 5-point scale. The domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 & SF36 health domain scales & component summary measures have means of 50 & standard deviations of 10. A higher role-emotional domain score represents better role-emotional functioning. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The SF-36v2 acute is a 36-item measure that evaluates 8 domains: physical functioning, role physical, bodily pain, general health, vitality, social functioning, role-emotional, and mental health. The 5-item mental health scale includes 1 or more items from each of 4 major mental health dimensions: anxiety, depression, loss of behavioral/emotional control, and psychological well-being. All items are answered on a 5-point scale. The domain scores were scored using the US 1998 general population norms. The resulting norm-based T-scores for both the SF36 version 2 & SF36 health domain scales & component summary measures have means of 50 & standard deviations of 10. A higher mental health domain score represents better mental health functioning. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The EQ-5D is a descriptive system of health-related quality of life states consisting of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which can take 1 of 3 responses. The responses record 3 levels of severity (no problems/some or moderate problems/extreme problems) within a particular EQ-5D dimension. Standard vertical 0 to 100 mm VAS (similar to a thermometer) for recording an individual's rating for their current health-related quality of life state, with a higher value representing better health status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The EQ-5D is a descriptive system of health-related quality of life states consisting of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which can take 1 of 3 responses. The responses record 3 levels of severity (no problems/some or moderate problems/extreme problems) within a particular EQ-5D dimension. Standard vertical 0 to 100 mm VAS (similar to a thermometer) for recording an individual's rating for their current health-related quality of life state, with a higher value representing better health status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The EQ-5D is a descriptive system of health-related quality of life states consisting of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which can take 1 of 3 responses. The responses record 3 levels of severity (no problems/some or moderate problems/extreme problems) within a particular EQ-5D dimension. Standard vertical 0 to 100 mm VAS (similar to a thermometer) for recording an individual's rating for their current health-related quality of life state, with a higher value representing better health status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The EQ-5D is a descriptive system of health-related quality of life states consisting of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which can take 1 of 3 responses. The responses record 3 levels of severity (no problems/some or moderate problems/extreme problems) within a particular EQ-5D dimension. Standard vertical 0 to 100 mm VAS (similar to a thermometer) for recording an individual's rating for their current health-related quality of life state, with a higher value representing better health status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The EQ-5D is a descriptive system of health-related quality of life states consisting of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which can take 1 of 3 responses. The responses record 3 levels of severity (no problems/some or moderate problems/extreme problems) within a particular EQ-5D dimension. Standard vertical 0 to 100 mm VAS (similar to a thermometer) for recording an individual's rating for their current health-related quality of life state, with a higher value representing better health status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

The EQ-5D is a descriptive system of health-related quality of life states consisting of 5 dimensions (mobility, self-care, usual activities, pain/discomfort, anxiety/depression) each of which can take 1 of 3 responses. The responses record 3 levels of severity (no problems/some or moderate problems/extreme problems) within a particular EQ-5D dimension. Standard vertical 0 to 100 mm VAS (similar to a thermometer) for recording an individual's rating for their current health-related quality of life state, with a higher value representing better health status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

FACIT-F is a 13-item questionnaire, with each item score ranging from 0 to 4. Three endpoints are derived: change in FACIT-F total score, change in FACIT-F experience domain score, and change in FACIT-F impact domain score. FACIT-F total score (range 0-52) is calculated by summing the 13 items. FACIT-F experience domain score (range 0-20) is calculated by summing 5 items : I feel fatigued, I feel weak all over, I feel listless ("washed out"), I feel tired, and I have energy, while FACIT-F impact domain score (range 0-32) is calculated by summing the remaining 8 items. All responses are added with equal weight to obtain the total score. Higher scores represent better fatigue status. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

FACIT-F is a 13-item questionnaire, with each item score ranging from 0 to 4. Three endpoints are derived: change in FACIT-F total score, change in FACIT-F experience domain score, and change in FACIT-F impact domain score. FACIT-F total score (range 0-52) is calculated by summing the 13 items. FACIT-F experience domain score (range 0-20) is calculated by summing 5 items : I feel fatigued, I feel weak all over, I feel listless ("washed out"), I feel tired, and I have energy, while FACIT-F impact domain score (range 0-32) is calculated by summing the remaining 8 items. All responses are added with equal weight to obtain the total score. Higher scores represent better (less) fatigue experience. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

FACIT-F is a 13-item questionnaire, with each item score ranging from 0 to 4. Three endpoints are derived: change in FACIT-F total score, change in FACIT-F experience domain score, and change in FACIT-F impact domain score. FACIT-F total score (range 0-52) is calculated by summing the 13 items. FACIT-F experience domain score (range 0-20) is calculated by summing 5 items : I feel fatigued, I feel weak all over, I feel listless ("washed out"), I feel tired, and I have energy, while FACIT-F impact domain score (range 0-32) is calculated by summing the remaining 8 items. All responses are added with equal weight to obtain the total score. Higher scores represent better (less) fatigue impact on daily functioning. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug and were evaluable.

BASDAI is a validated self-assessment tool used to determine disease activity in participants with ankylosing spondylitis. Utilizing a VAS of 0-10 (0=none and 10=very severe) participants answered 6 questions measuring discomfort, pain, and fatigue. The final BASDAI score averaged the individual assessments for a final score ranging 0-10cm, with higher scores representing more severe ankylosing spondylitis disease activity. n=number of participants evaluable at each visit.

All participants who were randomized, received at least 1 dose of study drug with presence of spondylitis at screening and baseline BASDAI score >0 cm, and were evaluable.