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Evaluation of two cane instruments in older adults with knee osteoarthritis

This study evaluates the psychometric properties of the Cane Cognitive Mediator Scale (CCMS) and Psychosocial Impact of Assistive Devices Scale (PIADS) in older adults with knee osteoarthritis (OA). The aim is to determine the feasibility of using these instruments to identify individuals likely to use a cane, which may impact their functional independence. Results show good reliability and validity of CCMS Subjunctive Norms subscale, suggesting its potential as a screening tool.

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Evaluation of two cane instruments in older adults with knee osteoarthritis

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  1. Evaluation of two cane instruments in older adults with kneeosteoarthritis Nancy Harada, PT, PhD; Stephanie Fong; Constance Heiney, MS; Jennifer M. Yentes, PhD; Karen L. Perell-Gerson, PhD; Meika A. Fang, MD

  2. Aim • Describe psychometric properties of Cane Cognitive Mediator Scale (CCMS) and Psychosocial Impact of Assistive Devices Scale (PIADS) in adults with knee osteoarthritis (OA). • Determine feasibility of using instruments to identify patients likely to use a cane. • Relevance • Extent to which older adults chooses to use prescribed assistive device may influence how long they will remain functionally independent.

  3. Method • Data from randomized crossover trial were analyzed for 53 older adults with knee OA. • Baseline: • Perceptions on using a cane were measured with CCMS and PIADS. • 1 week later: • CCMS was repeated. • 6 months later: • Subjects rated their intention to use a cane.

  4. Results • 1-week test-retest reliability: • Acceptable for CCMS Attitudes and Subjective Norms subscales. • Low for CCMS Perceived Behavioral Control subscale. • Internal consistency reliability: • Good for each CCMS and PIADS subscale. • Predictive validity: • CCMS Subjective Norms subscale: Acceptable across all subgroups. • PIADS Adaptability subscale: acceptable for 45 to 64 year-old group.

  5. Conclusion • Findings indicate that CCMS Subjective Norms subscale exhibits good psychometric properties and has potential application as a screening tool.

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