نبذة مختصرة : Objective: \ud To identify prognostic factors for health outcomes following an eight-week supervised exercise therapy and education program for individuals with knee and hip osteoarthritis (OA) alone or with concomitant hypertension, heart or respiratory disease, diabetes, or depression.\ud \ud Methods: \ud We included individuals with knee and/or hip OA from the Good Life with osteoArthritis in Denmark (GLA:D®). GLA:D® consists of two patient education sessions and 12 supervised exercise therapy sessions. Before GLA:D®, participants self-reported any comorbidities and were categorized in eight comorbidity groups. 21 potential prognostic factors (demographics, clinical data, and performance-based physical function) gathered from participants and clinicians before the program were included. Outcomes were physical function using the 40-m Fast-Paced Walk Test (FPWT), health-related quality of life using the EQ-5D-5L index score, and pain intensity using a visual analogue scale (0-100, VAS) assessed before and immediately after the GLA:D® program. Within each comorbidity group, associations of prognostic factors with outcomes were estimated using multivariable linear regression.\ud \ud Results: \ud Data from 35,496 (40-m FPWT) and 37,576 (EQ-5D-5L and VAS) participants were included in the analyses. Clinically relevant associations were demonstrated between age, self-efficacy, self-rated health, and pain intensity with change in 40-m FPWT, EQ-5D-5L or VAS across comorbidity groups. Furthermore, anxiety, education, physical function, and smoking were associated with outcomes among subgroups having depression or diabetes in addition to OA.\ud \ud Conclusion: \ud Age, self-efficacy, self-rated health, and pain intensity may be prognostic of change in health outcomes following an eight-week exercise therapy and patient education program for individuals with OA, irrespective of comorbidities.
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