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Objective Older adults with knee osteoarthritis (OA) who live in environments with mobility barriers may be at greater risk of developing participation restrictions, defined as difficulties in engagement in life situations. We investigated the risk of participation restriction over 5 years due to self-reported environmental features among older adults with knee OA. Methods Participants from the Multicenter Osteoarthritis (MOST) Study self-reported participation at baseline, 30 months, and 60 months using the instrumental role subscale of the Late Life Disability Index (LLDI). Data on self-reported environmental features were from the Home and Community Environment questionnaire administered in the MOST Knee Pain and Disability study, an ancillary study of MOST. The relative risks (RRs) of developing participation restriction at 60 months, indicated by an LLDI score

Objective To systematically rate the evidence on the measurement properties of work functioning instruments for people with arthritis and other rheumatologic conditions. Methods A systematic review was conducted through a structured search to identify the quality of articles describing studies of assessment development and studies of their psychometric properties. The Consensus-Based Standards for the Selection of Health Measurement Instruments (COSMIN) checklist was used to appraise the included studies. Finally, an evidence synthesis was performed to combine findings. Results Nine arthritis-specific work outcome assessments were identified; 17 articles examining the psychometric properties of these instruments were identified and their quality was reviewed. Quality of studies was highly variable. The evidence synthesis showed that the Work Limitations Questionnaire had the strongest quality evidence of internal consistency and content validity (including structural validity and hypothesis testing), followed by the Work Instability Scale. None of the instruments had strong quality evidence of criterion validity or responsiveness. Conclusion Considering the high variability and the low quality of the literature, we recommend that instrument developers integrate a full psychometric assessment of their instruments, including responsiveness and criterion validity, and consult guidelines (i.e., COSMIN) in reporting their findings.