Article

The objectives of this study were to describe the psychometric properties of the
Cane Cognitive Mediator Scale (CCMS) and the Psychosocial Impact of Assistive
Devices Scale (PIADS) in adults with knee osteoarthritis (OA) and to determine
the feasibility of applying these instruments as screening tools to identify
patients with the propensity to use a cane. Data from a randomized crossover
trial were analyzed for 53 older adults with knee OA. Perceptions on using a cane
were measured at baseline using the CCMS and PIADS. The CCMS was repeated 1 wk
later. At 6 mo, subjects rated their intention to use a cane. The findings
indicated that 1 wk test-retest reliability was acceptable for the CCMS Attitudes
and Subjective Norms subscales (r = 0.48 to 0.93) and low for the CCMS Perceived
Behavioral Control subscale (r = 0.15). Internal consistency reliability was good
for each CCMS and PIADS subscale. The CCMS Subjective Norms subscale demonstrated
acceptable predictive validity across all subgroups (r = 0.53 to 0.88). The PIADS
Adaptability subscale demonstrated acceptable predictive validity for the 45 to
64 yr-old age group (r = 0.54). The findings indicate that the CCMS Subjective
Norms subscale exhibits good psychometric properties and has potential
application as a screening tool.

Langue : ANGLAIS