Moderators and Mediators of Pain and Function Outcomes in a New Service Delivery Model for Management of Knee Osteoarthritis in Primary Care: Secondary Exploratory Analysis of a Randomized Controlled Trial

Abstract

Objective: Our objective was to explore moderators and mediators influenced changes in pain and function in people with knee osteoarthritis (OA) receiving a new model of primary care service delivery (Optimizing Primary Care Management of Knee Osteoarthritis [PARTNER]), at 12 months (ACTRN: 12617001595303). Methods: This was a secondary analyses of a cluster randomized controlled trial comparing PARTNER to the usual general practitioner–delivered care (n = 217 patients: 112 PARTNER patients and 105 usual care patients) on knee pain and function. Pain was measured using a numerical rating scale (range 0–10, with a higher score indicating more severe pain), and function was measured using the ..