The PGA measures the physician's assessment of the patient's current disease activity from using 6 assessments (general well-being, abdominal pain, diarrhea, blood in stool, abdominal mass, and Crohn's disease-related complications). The PGA score is the sum of the subscores and ranges from 0 (very good) to approximately 25 (very bad). A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

Absenteeism, presented as the mean percentage of work time missed due to Crohn's Disease (as reported on the WPAI:SHP), and is calculated as: 100*number of hours of work missed due to psoriasis / (number of hours of work missed due to psoriasis + number of hours worked). WPAI is a questionnaire used to evaluate lost productivity; scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity. A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

Presenteeism (the extent to which CD decreased productivity) is presented as the mean percentage of impairment while working due to CD, and is calculated as: 100*scale value of question 5 on the WPAI (between 0 and 10) / 10. WPAI:SHP is a questionnaire used to evaluate lost productivity; scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity. A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

The mean percentage of overall work impairment due to CD (based on the WPAI questionnaire) is presented, and is calculated as: Absenteeism (%) + extent to which CD decreased productivity (%)* [number of hours worked / (number of hours of work missed due to CD + number of hours worked)]. WPAI is a questionnaire used to evaluate lost productivity; scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity. A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

Activity impairment due to CD (the extent to which CD affected the ability to perform usual daily activities) is presented as the mean percentage of activity impairment, and is calculated as 100*scale value of WPAI question 6 (between 0 and 10) / 10. WPAI is a questionnaire used to evaluate lost productivity; scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity. A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

The HCRU assesses the frequency of unscheduled outpatient visits, emergency room visits, or hospitalizations for their CD in the past 3 months. The mean number of visits at physician's office in the past 3 months is presented at each timepoint. N=number of participants with at least one visit at given timepoint.

The HCRU assesses the frequency of unscheduled outpatient visits, emergency room visits, or hospitalizations due to CD in the past 3 months. The mean number of visits at emergency room in the past 3 months is presented at each timepoint. N=number of participants with at least one visit at given timepoint.

The HCRU assesses the frequency of unscheduled outpatient visits, emergency room visits, or hospitalizations due to CD in the past 3 months. The mean number of admissions to hospital in the past 3 months is presented at each timepoint. N=number of participants with data for "total days in hospital" and at least one admission to hospital at given timepoint..

The HCRU assesses the frequency of unscheduled outpatient visits, emergency room visits, or hospitalizations due to CD in the past 3 months. The mean total days in hospital in the past 3 months is presented at each timepoint. N=number of participants with data for "total days in hospital" at given timepoint.

The SIBDQ is a disease-specific health-related quality of life (HRQoL) questionnaire, able to detect and define meaningful clinical changes in inflammatory bowel disease (IBD) patients by measuring physical, social and emotional status. The SIBDQ consists of 10 questions, each question is scored on a scale from 1 (poor QoL) to 7 (good QoL). The scores are summed up and range from 10 (poor QoL) to 70 (good QoL). A higher score indicates a better HRQoL; a positive change from baseline indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with SIBDQ measurements.

The PGA measures the physician's assessment of the patient's current disease activity from using 6 assessments (general well-being, abdominal pain, diarrhea, blood in stool, abdominal mass, and Crohn's disease-related complications). The PGA score is the sum of the subscores and ranges from 0 (very good) to approximately 25 (very bad). A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with PGA measurements.

Absenteeism, presented as the mean percentage of work time missed due to Crohn's Disease (as reported on the WPAI:SHP), and is calculated as: 100*number of hours of work missed due to psoriasis / (number of hours of work missed due to psoriasis + number of hours worked). WPAI is a questionnaire used to evaluate lost productivity; scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity. A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with WPAI:SHP measurements.

Presenteeism (the extent to which CD decreased productivity) is presented as the mean percentage of impairment while working due to CD, and is calculated as: 100*scale value of question 5 on the WPAI (between 0 and 10) / 10. WPAI:SHP is a questionnaire used to evaluate lost productivity; scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity. A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with WPAI:SHP measurements.

The mean percentage of overall work impairment due to CD (based on the WPAI questionnaire) is presented, and is calculated as: Absenteeism (%) + extent to which CD decreased productivity (%)* [number of hours worked / (number of hours of work missed due to CD + number of hours worked)]. WPAI is a questionnaire used to evaluate lost productivity; scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity. A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with WPAI:SHP measurements.

Activity impairment due to CD (the extent to which CD affected the ability to perform usual daily activities) is presented as the mean percentage of activity impairment, and is calculated as 100*scale value of WPAI question 6 (between 0 and 10) / 10. WPAI is a questionnaire used to evaluate lost productivity; scores are presented as percentages (multiplying the scores by 100), with 0% representing no impact on productivity and 100% representing complete impact on productivity. A negative change in score indicates improvement. N=the number of participants with available data at both baseline and given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with WPAI:SHP measurements.

The HCRU assesses the frequency of unscheduled outpatient visits, emergency room visits, or hospitalizations for their CD in the past 3 months. The mean number of visits at physician's office in the past 3 months is presented at each timepoint. N=number of participants with at least one visit at given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with at least 1 visit at physician's office.

The HCRU assesses the frequency of unscheduled outpatient visits, emergency room visits, or hospitalizations due to CD in the past 3 months. The mean number of visits at emergency room in the past 3 months is presented at each timepoint. N=number of participants with at least one visit at given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with at least 1 visit at emergency room.

The HCRU assesses the frequency of unscheduled outpatient visits, emergency room visits, or hospitalizations due to CD in the past 3 months. The mean number of admissions to hospital in the past 3 months is presented at each timepoint. N=number of participants with data for "total days in hospital" and at least one admission to hospital at given timepoint..

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with data for "total days in hospital" and at least one admission to hospital.

The HCRU assesses the frequency of unscheduled outpatient visits, emergency room visits, or hospitalizations due to CD in the past 3 months. The mean total days in hospital in the past 3 months is presented at each timepoint. N=number of participants with data for "total days in hospital" at given timepoint.

All participants in the All Treated Population (received at least 1 injection of Humira in the registry) with data for "total days in hospital".