Prevalence of concerns about falling in people with knee or hip osteoarthritis and the association with pain, function, and psychological factors-a cross-sectional study of 7442 patients treated in primary care.

Background: Concerns about falling (CaF) are common in older people and can lead to avoidance of activities, social isolation and reduced physical function. However, there is limited knowledge about CaF in people with osteoarthritis (OA); yet, symptoms may increase CaF. We aimed to evaluate the prevalence of CaF and associated factors in people with knee or hip OA.

Methods: This cross-sectional study used data from the Good Life with osteoArthritis in Denmark registry including patients with OA treated in primary care. CaF was assessed with the Short Falls Efficacy Scale International (Short FES-I, range 7-28, low to high). Associations between CaF and pain, function and psychological factors were evaluated using multivariable linear Tobit regression.

Results: In total, 7442 patients were included [mean age 67 years (SD: 9.6), 67% females]. Mean Short FES-I was 9.8 [95% confidence interval (CI): 9.7; 9.8]. Moderate CaF was observed in 48.1% (95% CI: 46.7; 48.9) of participants, whilst 11.3% (95% CI: 10.7; 12.1) had a high level of CaF. CaF was more prevalent in the oldest participants and in females. Pain intensity [β-value (95% CI): 0.52 (0.48; 0.55)], chair stand test [-0.21 (-0.22; -0.19)] and fear of movement [1.38 (1.19; 1.56)] were significantly associated with increased CaF across age groups and sex.

Conclusions: CaF is common in people with OA, especially in the oldest participants and in females. Higher pain, lower function and psychological distress are associated with CaF; yet, the causality of the associations remain to be determined. Integrating CaF assessments and interventions into OA management in primary care seems highly relevant.