Pain trajectory groups in persons with, or at high risk of, knee osteoarthritis: findings from the Knee Clinical Assessment Study and the Osteoarthritis Initiative E. Nicholls, E. Thomas, D.A. van der Windt, P.R. Croft, G. Peat Osteoarthritis and Cartilage Volume 22, Issue 12, Pages 2041-2050 (December 2014) DOI: 10.1016/j.joca.2014.09.026 Copyright © 2014 The Authors Terms and Conditions
Fig. 1 WOMAC Pain Scores by Trajectory Group Membership for (A) CAS-K and (B) Matched OAI Sample (N = 570). Abbreviations: PYRC = Per-year rate of change in WOMAC points; 95% confidence interval in brackets. Osteoarthritis and Cartilage 2014 22, 2041-2050DOI: (10.1016/j.joca.2014.09.026) Copyright © 2014 The Authors Terms and Conditions