Figure 1
The study design. GP = general practitioner; CB = cognitive-behavioral; WOMAC = Western Ontario and McMaster Osteoarthritis Index; RAND-36 = the RAND 36-item health survey; 15D = generic 15D instrument; BDI-21 = 21-item Beck Depression Inventory; BAI = Beck Anxiety Index; TSK = Tampa Scale for Kinesiophobia; PCS = Pain Catastrophizing Scale; PSEQ = Pain Self-Efficacy Questionnaire; LS = life satisfaction; SOC = sense of coherence; GAC = global assessment of change.