A Study of Tocilizumab Added to DMARDs in Patients With Moderate to Severe Rheumatoid Arthritis and an Inadequate Response to DMARDs.

HAQ includes 20 questions concerning participant's activities of daily life, grouped in 8 scales of 2 to 3 questions for each activity. To respond to each question, a four-level response (score of 0 to 3 points), with higher scores showing larger functional limitations, was chosen. Scoring was as follows with respect to performance of participant's everyday activities: 0 (equals)=without difficulties; 1=with some difficulties; 2=with great difficulties; and 3=unable to perform these actions at all. Minimum score was 0, maximum score was 3. Withdrawal Visit is the final visit prior to the withdrawal of the subject from the study.

HAQ includes 20 questions concerning participant's activities of daily life, grouped in 8 scales of 2 to 3 questions for each activity. To respond to each question, a four-level response (score of 0 to 3 points), with higher scores showing larger functional limitations, was chosen. Scoring was as follows with respect to performance of participant's everyday activities: 0=without difficulties; 1=with some difficulties; 2=with great difficulties; and 3=unable to perform these actions at all. Minimum score was 0, maximum score was 3.

HAQ includes 20 questions concerning participant's activities of daily life, grouped in 8 scales of 2 to 3 questions for each activity. To respond to each question, a four-level response (score of 0 to 3 points), with higher scores showing larger functional limitations, was chosen. Scoring was as follows with respect to performance of participant's everyday activities: 0=without difficulties; 1=with some difficulties; 2=with great difficulties; and 3=unable to perform these actions at all. Minimum score was 0, maximum score was 3.

Participant's global assessment of pain was assessed using a 100-millimeter (mm) horizontal VAS (0 to 100 mm) with 0=pain absent and 100=intolerable pain. Participants responded by placing a mark on the line to indicate their current level of pain.

EQ-5D questionnaire assess 5 domains of quality of life including mobility, self-care, habitual daily activities, pain, discomfort, and anxiety/depression. Each of five domains was assessed by 3 levels depending on severity of a problem and scored using the following: 1=no disturbances, 2=moderate disturbances, 3=severe disturbances. Score is transformed and results in a total score range -0.594 to 1.000; higher score indicates a better health state.

EQ-5D questionnaire assess 5 domains of quality of life including mobility, self-care, habitual daily activities, pain, discomfort, and anxiety/depression. Each of five domains was assessed by 3 levels depending on severity of a problem and scored using the following: 1=no disturbances, 2=moderate disturbances, 3=severe disturbances. Score is transformed and results in a total score range -0.594 to 1.000; higher score indicates a better health state. Minimum clinically significant change in EQ-5D corresponds to the parameter differences before and after treatment = 0.10. Graduations of assessment of the therapy efficacy by EQ-5D are: Difference (Δ) EQ-5D less than (<)0.10 points: none; 0.10 less than or equal to (≤)Δ EQ-5D ≤0.24: minimal effect; 0.24≤ Δ EQ-5D <0.31: satisfactory effect; Δ EQ-5D greater than or equal to (≥)0.31 points: pronounced effect.

Participant-reported general health quality was assessed using an EQ-5D 100-mm horizontal VAS (0 to 100 mm) with 0=worst health state and 100=the best health state. The participants were asked to mark the line that corresponded to assessment of general health quality.

Participant-reported general health quality was assessed using an EQ-5D 100-mm horizontal VAS (0 to 100 mm) with 0=worst health state and 100=the best health state. The participants were asked to mark the line that corresponded to assessment of general health quality. Positive response was defined as an increase of EQ-5D score by 0.1 or more i.e. it is a clinically significant increase.

Participant-reported general health quality was assessed using an EQ-5D 100-mm horizontal VAS (0 to 100 mm) with 0=worst health state and 100=the best health state. The participants were asked to mark the line that corresponded to assessment of general health quality.

DAS28 calculated from the number of swollen joints and tender joints using the 28-joint count, the erythrocyte sedimentation rate (ESR) (millimeters per hour [mm/hour]) and global health assessment (participant rated global assessment of disease activity using 10-mm VAS); DAS28 score ranged from 0 to 10, where higher scores correspond to greater disease activity.

DAS28 calculated from the number of swollen joints and tender joints using the 28-joint count, the ESR mm/hour, and global health assessment (participant rated global assessment of disease activity using 10-mm VAS); DAS28 score ranged from 0 to 10, where higher scores correspond to greater disease activity. Disease activity: 0=remission (DAS28 less than [<] 2.6), I=low (DAS28 less than or equal to [≤]2.6 to <3.2), II=moderate (DAS28=3.2 to 5.1), III=high (DAS28 greater than [>]5.1).

ACR20/50/70 response: ≥20%, ≥50%, or ≥70% improvement, respectively, in swollen/tender joint count (66 joints assessed for swelling and 68 joints assessed for tenderness) and in at least 3 of 5 remaining ACR core measures: participant assessment of pain; participant global assessment of disease activity; physician global assessment of disease activity; self-assessed disability (disability index of the HAQ); and acute phase response: C-reactive protein (CRP) or ESR.

The DAS28-based EULAR response criteria were used to measure individual response as no effect, good effect, and moderate effect, depending on the extent of change from baseline and the level of disease activity reached. Good effect: change from baseline >1.2 with DAS28 score ≤3.2; moderate effect: change from baseline >1.2 with DAS28 score 3.2 to 5.1 or change from baseline >0.6 to <1.2 with DAS28 score <3.2; no effect: change from baseline ≤0.6 or change from baseline >0.6 and ≤1.2 with DAS28 score >5.1.

CRP (milligrams/Liter) is a mediator of inflammation, acute phase protein.

ESR (mm/hr) is used to determine the acute phase response.