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NCT00266227 · OUTCOME

Change From Baseline in the Disease Activity Score Using 28 Joint Counts (DAS28-ESR) at Week 48

A Study of Retreatment With Rituximab in Patients With Rheumatoid Arthritis Receiving Background Methotrexate · Source last updated 2013-10-25

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
MEAN
Unit
Units on a scale
Interval / dispersion
Standard Deviation
Time frame
48 weeks

What was measured

The DAS28 score is a measure of the patient's disease activity calculated using the tender joint count (TJC) \[28 joints\], swollen joint count (SJC) \[28 joints\], patient's global assessment of disease activity \[visual analog scale: 0=no disease activity to 100=maximum disease activity\] and the erythrocyte sedimentation rate (ESR) for a total possible score of 2 to 10. Higher values indicate higher disease activity. A negative change from baseline indicates improvement.

Analysis population: Participants from the Intent-to-treat population, that includes all participants randomized to Retreatment, with data available for analyses.

Groups in this outcome

Arm A: Rituximab Retreatment

1000 mg rituximab intravenous initial treatment on day 1 and day 15 plus 10-25 mg/week methotrexate followed by re-treatment during weeks 24 -40 consisting of two additional doses of 1000 mg rituximab 14 days apart plus 10-25 mg/week methotrexate.

Arm B: Placebo Retreatment

1000 mg rituximab initial treatment on day 1 and day 15 plus 10-25 mg/wk methotrexate followed by re-treatment during weeks 24 -40 consisting of two doses of placebo 14 days apart plus 10-25 mg/wk methotrexate.

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Arm A: Rituximab Retreatment312
Arm B: Placebo Retreatment157

Reported measurements

Source class 1
Values in Units on a scale · Interval/dispersion: Standard Deviation
GroupValueSpreadLowerUpperComment
Arm A: Rituximab Retreatment-2.11.55Not reportedNot reportedNot reported
Arm B: Placebo Retreatment-1.81.69Not reportedNot reportedNot reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    -0.7
    ci Pct Value
    95
    ci Upper Limit
    -0.1
    group Description
    Assessed using an analysis of variance (ANOVA) model, with retreatment group, baseline DAS28-ESR score, baseline RF status, and ≥20% improvement in both SJC and TJC at Week 24 from baseline (yes/no) as explanatory terms in the model.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    param Type
    Mean Difference (Final Values)
    param Value
    -0.4
    statistical Comment
    Adjusted mean for Arm A (Rituxan) is -1.9 and adjusted mean for Arm B (Placebo) is -1.5.
    statistical Method
    ANOVA
    tested Non Inferiority
    false
Complete source fields
analyses
  1. ci Lower Limit
    -0.7
    ci Pct Value
    95
    ci Upper Limit
    -0.1
    group Description
    Assessed using an analysis of variance (ANOVA) model, with retreatment group, baseline DAS28-ESR score, baseline RF status, and ≥20% improvement in both SJC and TJC at Week 24 from baseline (yes/no) as explanatory terms in the model.
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY_OR_OTHER
    param Type
    Mean Difference (Final Values)
    param Value
    -0.4
    statistical Comment
    Adjusted mean for Arm A (Rituxan) is -1.9 and adjusted mean for Arm B (Placebo) is -1.5.
    statistical Method
    ANOVA
    tested Non Inferiority
    false
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        spread
        1.55
        value
        -2.1
      2. group Id
        OG001
        spread
        1.69
        value
        -1.8
denoms
  1. counts
    1. group Id
      OG000
      value
      312
    2. group Id
      OG001
      value
      157
    units
    Participants
description
The DAS28 score is a measure of the patient's disease activity calculated using the tender joint count (TJC) \[28 joints\], swollen joint count (SJC) \[28 joints\], patient's global assessment of disease activity \[visual analog scale: 0=no disease activity to 100=maximum disease activity\] and the erythrocyte sedimentation rate (ESR) for a total possible score of 2 to 10. Higher values indicate higher disease activity. A negative change from baseline indicates improvement.
dispersion Type
Standard Deviation
groups
  1. description
    1000 mg rituximab intravenous initial treatment on day 1 and day 15 plus 10-25 mg/week methotrexate followed by re-treatment during weeks 24 -40 consisting of two additional doses of 1000 mg rituximab 14 days apart plus 10-25 mg/week methotrexate.
    id
    OG000
    title
    Arm A: Rituximab Retreatment
  2. description
    1000 mg rituximab initial treatment on day 1 and day 15 plus 10-25 mg/wk methotrexate followed by re-treatment during weeks 24 -40 consisting of two doses of placebo 14 days apart plus 10-25 mg/wk methotrexate.
    id
    OG001
    title
    Arm B: Placebo Retreatment
param Type
MEAN
population Description
Participants from the Intent-to-treat population, that includes all participants randomized to Retreatment, with data available for analyses.
reporting Status
POSTED
time Frame
48 weeks
title
Change From Baseline in the Disease Activity Score Using 28 Joint Counts (DAS28-ESR) at Week 48
type
SECONDARY
unit Of Measure
Units on a scale

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice