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Table 2 Baseline characteristics of all included and those with and without 3 month data

From: Disease activity level, remission and response in established rheumatoid arthritis: Performance of various criteria sets in an observational cohort, treated with anti-TNF agents

  All included N = 1789 With 3 month data N = 1258 Missing at 3 months N = 531
  Mean Std dev Mean Std dev Mean Std dev
Percent female 77.2   77.8   77.8  
Age 55.9 13.4 55.6 13.2 56.3 13.7
Disease duration, years 12.1 10.2 12.0 10.0 12.2 10.6
Ongoing DMARDs 0.85 0.57 0.85 0.57 0.84 0.57
DAS28 (0–10) 5.54 1.18 5.58 1.16 5.43 1.21
CDAI 30.6 12.3 31.0 12.1 32.2 13.9
HAQ (0–3) 1.34 0.64 1.36 0.64 1.29 0.62
CRP (mg/L) 30.8 33.0 31.4 33.6 28.9 31.3