Percentages of (A) ACR 20, 50, and 70 responders, and (B) patients with DAS28-CRP ≤ 3.2 or < 2.6 during 5 years. Percentages of (A) ACR 20, 50, and 70 responders, and (B) patients with DAS28-CRP ≤ 3.2 or < 2.6 during 5 years. Data are for all patients originally randomized to abatacept who entered the longterm extension, with data available at the visit of interest (as-observed population), and are presented with 95% CI within parentheses. Both double-blind (Day 1 to Year 1) and longterm extension (yrs 1–5) data are presented. ACR: American College of Rheumatology; CRP: C-reactive protein; DAS28: 28-joint Disease Activity Score. Joel M. Kremer et al. J Rheumatol 2014;41:1077-1087 ©2014 by The Journal of Rheumatology