The Health Assessment Questionnaire-Disability Index (HAQ-DI) is a 20-question instrument that assesses the degree of difficulty a person has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping and activities of daily living). Responses in each functional area are scored from 0 to 3 (0=no difficulty and 3=inability to perform a task in that area). HAQ-DI total scores expressed as overall mean score with range 0-3: 0-0.25=normal functioning; 0.25-0.5=mild functional limitation; 0.5-1=moderate functional limitation; more than 1=significant functional limitation. The proportion of participants achieving a clinically important reduction of >= 0.22 point in HAQ (disease-specific questionnaire) at Week 24 was evaluated. HAQ was assessed using the set of observed cases (OC) at each assessment time. An improvement of 0.22 units in HAQ-DI was considered to be a clinically significant improvement.

The ITT population included all screened participants who answered at least one SF-36 questionnaire.

SF- 36 investigates the standard of quality of life through a general health assessment and not specific to a particular disease, age or treatment group. It is a 36-item questionnaire measuring 8 domains (physical functioning, role physical, bodily pain, general health, vitality, social functioning, role emotional, and mental health). Each domain score ranges from 0 (worst) to 100 (best), with higher scores reflecting better health-related functional status. Two summary scale scores were computed based on weighted combinations of the 8 domain scores: the Physical Component Summary and the Mental Component Summary. SF-36 was assessed using the set of observed cases (OC) at each assessment time.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = number of participants analyzed for a given component of SF-36.

An infusion reaction is defined as an adverse event that occurs during infusion or within 24 hours after infusion of Rituximab. All infectious events, whether considered related or not to Rituximab, were collected for the safety analysis of the study. An adverse event is any untoward medical event that occurs in a participant administered an investigational product, and it does not necessarily indicate only events with clear causal relationship with the relevant investigational product.

The ITT population included all screened participants who answered at least one SF-36 questionnaire.

Erythrocyte Sedimentation Rate is an acute phase reactant and a measure of inflammation.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed at the given time point.

CRP is an inflammation marker. High levels of this protein indicate inflammation in diseases such as Rheumatoid Arthritis.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed at the given time point.

A swollen joint count is the most specific clinical method to quantify abnormalities in participants with rheumatoid arthritis (RA). It reflects the amount of inflamed synovial tissue.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed at the given time point.

A tender joint count is the most specific clinical method to quantify abnormalities in participants with rheumatoid arthritis (RA). It is associated more with the level of pain.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed at the given time point.

DAS28 is calculated from the number of swollen joints and tender joints using the 28-joints count, the erythrocyte sedimentation rate (ESR) (millimeters per hour [mm/hr]) and Patient's Global Assessment of Disease Activity (participant-rated arthritis activity assessment) with transformed scores ranging 0 (minimum score) to 10 (maximum score); higher scores indicated greater affectation due to disease activity. A DAS28 score of less than or equal to (=<) 3.2 = low disease activity, a DAS28 score of >3.2 to 5.1 = moderate to high disease activity.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed at the given time point.

The Physician's Global Assessment of disease activity was assessed using a 0 to 100 mm horizontal visual analogue scale (VAS). The left-hand extreme of the line equals 0 mm, and is described as "no disease activity" (symptom-free and no arthritis symptoms) and the right-hand extreme equals 100 mm, as "maximum disease activity" (maximum arthritis disease activity).Change from Baseline = scores at observation minus score at Baseline. An increase in score from Baseline represented disease progression and/or joint worsening, no change represented halting of disease progression, and a decrease represented improvement.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed at the given time point.

The Health Assessment Questionnaire-Disability Index (HAQ-DI) is a 20-question instrument that assesses the degree of difficulty a person has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping and activities of daily living). Responses in each functional area are scored from 0 to 3 (0=no difficulty and 3=inability to perform a task in that area). HAQ-DI total scores expressed as overall mean score with range 0-3: 0-0.25=normal functioning; 0.25-0.5=mild functional limitation; 0.5-1=moderate functional limitation; more than 1=significant functional limitation. The number of participants achieving a clinically important reduction of >= 0.22 point in HAQ (disease-specific questionnaire) at Week 24 was evaluated. HAQ was assessed using the set of observed cases (OC) at each assessment time. An improvement of 0.22 units in HAQ-DI was considered to be a clinically significant improvement.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed at the given time point.

Visual Analogue Scale (VAS) is a 100 millimeter (mm) scale. Intensity of pain range: 0 mm=no pain to 100 mm=worst possible pain. Change from Screening=scores at observation minus score at Screening. An increase in score from Screening represented disease progression and/or joint worsening, no change represented halting of disease progression, and a decrease represented improvement. The change in pain scale was analyzed for the set of observed cases (OC) at each assessment time.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed at the given time point.

SF- 36 investigates the standard of quality of life through a general health assessment and not specific to a particular disease, age or treatment group. It is a 36-item questionnaire measuring 8 domains (physical functioning, role physical, bodily pain, general health, vitality, social functioning, role emotional, and mental health). Each domain score ranges from 0 (worst) to 100 (best), with higher scores reflecting better health-related functional status. Two summary scale scores were computed based on weighted combinations of the 8 domain scores: the Physical Component Summary and the Mental Component Summary. SF-36 was assessed using the set of observed cases (OC) at each assessment time.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed for a particular component of SF-36.

SF- 36 investigates the standard of quality of life through a general health assessment and not specific to a particular disease, age or treatment group. It is a 36-item questionnaire measuring 8 domains (physical functioning, role physical, bodily pain, general health, vitality, social functioning, role emotional, and mental health). Each domain score ranges from 0 (worst) to 100 (best), with higher scores reflecting better health-related functional status. Two summary scale scores were computed based on weighted combinations of the 8 domain scores: the Physical Component Summary and the Mental Component Summary. SF-36 was assessed using the set of observed cases (OC) at each assessment time.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = the number of participants analyzed for a particular domain of SF-36.

The Health Assessment Questionnaire-Disability Index (HAQ-DI) is a 20-question instrument that assesses the degree of difficulty a person has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping and activities of daily living). Responses in each functional area are scored from 0 to 3 (0=no difficulty and 3=inability to perform a task in that area). HAQ-DI total scores expressed as overall mean score with range 0-3: 0-0.25=normal functioning; 0.25-0.5=mild functional limitation; 0.5-1=moderate functional limitation; more than 1=significant functional limitation. The proportion of participants achieving a clinically important reduction of >= 0.22 point in HAQ (disease-specific questionnaire) at Week 24 was evaluated. HAQ was assessed using the set of observed cases (OC) at each assessment time. An improvement of 0.22 units in HAQ-DI was considered to be a clinically significant improvement.

The ITT population included all screened participants who answered at least one SF-36 questionnaire.

SF- 36 investigates the standard of quality of life through a general health assessment and not specific to a particular disease, age or treatment group. It is a 36-item questionnaire measuring 8 domains (physical functioning, role physical, bodily pain, general health, vitality, social functioning, role emotional, and mental health). Each domain score ranges from 0 (worst) to 100 (best), with higher scores reflecting better health-related functional status. Two summary scale scores were computed based on weighted combinations of the 8 domain scores: the Physical Component Summary and the Mental Component Summary. SF-36 was assessed using the set of observed cases (OC) at each assessment time.

The ITT population included all screened participants who answered at least one SF-36 questionnaire. n = number of participants analyzed for a given component of SF-36.