Rachel Muskett, Helen Bourke-Taylor, Alana Hewitt; Intrarater Reliability and Other Psychometrics of the Health Promoting Activities Scale (HPAS). Am J Occup Ther 2017;71(4):7104190010. https://doi.org/10.5014/ajot.2017.021162
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© 2019 American Occupational Therapy Association
OBJECTIVE. The Health Promoting Activities Scale (HPAS) measures the self-rated frequency with which adults participate in activities that promote health. We evaluated the internal consistency, construct validity, and intrarater reliability of the HPAS with a cohort of mothers (N = 56) of school-age children.
METHOD. We used an online survey that included the HPAS and measures of mental and physical health. Statistical analysis included intraclass correlation coefficients (ICCs), measurement error, error range, limits of agreement, and minimum detectable change (MDC).
RESULTS. The HPAS showed good internal consistency (Cronbach’s α = .73). Construct validity was supported by a significant difference in HPAS scores among participants grouped by physical activity level; no other differences were significant. Results included a high aggregate ICC of .90 and an MDC of 5 points.
CONCLUSION. Our evaluation of the HPAS revealed good reliability and stability, suggesting suitability for ongoing evaluation as an outcome measure.
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