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Table 3 Comparison of DAS28 between the chicken type II collagen group and the methotrexate group

From: A multicenter, double-blind, randomized, controlled phase III clinical trial of chicken type II collagen in rheumatoid arthritis

Group Relief
(≤ 2.6)
Low activity
(2.6~3.2)
Mid activity
(3.2~5.1)
High activity
(>5.1)
Chi-square Pvaluea
CCII (n = 296) 36 26 138 96 5.476 0.019
MTX (n = 158) 20 19 88 31   
  1. aShowed rank sum test. CCII, chicken type II collagen; DAS28, disease activity score using 28 joint counts; MTX, methotrexate.