Improvement in FACIT-F fatigue score according to ACR20 response status (ACR, American College of Rheumatology; DMARD, disease-modifying antirheumatic drug; FACIT-F, Functional Assessment of Chronic Illness Therapy-Fatigue). Improvement in FACIT-F fatigue score according to ACR20 response status (ACR, American College of Rheumatology; DMARD, disease-modifying antirheumatic drug; FACIT-F, Functional Assessment of Chronic Illness Therapy-Fatigue). Rieke Alten et al. RMD Open 2015;1:e000134 Copyright © BMJ Publishing Group & EULAR. All rights reserved.