Is the Human Activity Profile a useful measure in people with knee osteoarthritis?
This study evaluated the usefulness of the Human Activity Profile (HAP) in people with knee osteoarthritis (OA). People with OA (N = 226) completed the HAP and a battery of pain and physical function measures. Healthy elderly controls (N = 33) also completed the HAP, and 20 OA participants underwent repeat testing 2 to 7 days later. Test-retest reliability was excellent (intraclass correlation coefficients 0.96 and 0.95). The HAP was sensitive enough to detect differences in physical activity between people with (N = 33) and without OA (N = 33) (p < 0.01). When OA individuals were classified as impaired, moderately active, or active based on HAP score, differences in pain and physical function were detected (p < 0.05). Correlations between HAP and commonly used pain and physical function measures were weak to moderate (r = 0.18-0.63, all p < 0.01), indicating that the HAP measures additional information not gained by other assessment tools. The HAP is a reliable measure, and it is sens
