Fig. 2From: The knitting community-based trial for older women with osteoarthritis of the hands: design and rationale of a randomized controlled trialPreliminary set of endorsed core domains for hand osteoarthritis studies. Inner circle: Domains for all settings, i.e., clinical trials of symptom modification, clinical trials of structure modification, and observational studies. Outer circle: Domains for some settings, i.e., clinical trials of structure modification and observational studies. *Domains not mandatory as long as no disease-specific instruments are available. HR: health-related. “Reprinted with permission from The Journal of Rheumatology, Kloppenburg, M., et al J Rheumatol 2015; All rights reserve” ©2015Back to article page