Fig. 4

Kaplan-Meier curves for SDFR development within 7 years of follow-up based on disease activity scores at 4 months in ACPA-negative RA. Legend: Time-to-event was defined as time from 4 months visit until SDFR development (yes/no), i.e., the absence of clinical arthritis for minimally 12 months after DMARD stop. ACPA anti-citrullinated protein antibody, DAS disease activity score, SDFR sustained DMARD-free remission