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Psychometric Performance of the Consumer Assessment of Healthcare Providers and Systems (CAHPS)4.0 Adult Health Plan Survey
Journal article

Psychometric Performance of the Consumer Assessment of Healthcare Providers and Systems (CAHPS)4.0 Adult Health Plan Survey

Kelly Chong, Peter C Damiano and Ron D Hays
Primary Health Care: Open Access, Vol.2(4), 1000123
2012
DOI: 10.4172/2167-1079.1000123

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Abstract

<p> Background: The Consumer Assessment of Healthcare Providers and Systems (CAHPS®) health plan survey is widely used to assess quality of care from the patient perspective. The objective of this study was to assess the psychometric performance of a preliminary version of the CAHPS 4.0 Health Plan Survey.</p> <p> Methods: Data were obtained from a sample of 597 adults enrolled in one of two Medicaid managed care health plans in Iowa. Item-scale correlations and confirmatory factor analysis were estimated to examine item convergence and discrimination. Reliability of each multi-item scale (doctor communication, getting care quickly, delays in start of appointments, getting needed care, office staff courtesy and respect) was assessed at the individual enrollee and health plan levels. Plan-level reliability of individual items and global ratings was also estimated. Multivariate regressions were used to model the associations of the multi-item scales with global ratings of care and “recommend to others” bottom-line items.</p> <p> Results: The multi-item scales were generally acceptable for group comparisons, with a median internal consistency reliability coefficient of 0.78. The doctor communication composite (6 items, alpha = 0.92) had the highest and delays in start of appointment (2 items, alpha = 0.57) the lowest internal consistency reliability. Item discrimination across scales was generally supported. Plan level reliability was above 0.70 for the “global rating of personal doctor” and “recommend health plan to others” item. “Getting needed care” and “office staff courtesy and respect” items had plan-level reliabilities of 0.70 and 0.82, respectively. Confirmatory factor analysis provided support for a 5-factor model (Satorra-Bentler χ2 =597.01, df = 109, P < 0.001; CFI = 0.871, RMSEA = 0.089, AIC = 379.01). The five reporting composites were positively associated with all global ratings and “recommend to others” items. The largest correlations were observed between doctor communication and the global rating of personal doctor (r = 0.75) and “recommend personal doctor to others” (r = 0.73).</p> <p> Conclusion: This study provides support for psychometric properties of CAHPS 4.0 Health Plan Survey measures.</p>
Health plan assessment Psychometrics Patient evaluation of health care Consumer assessments CAHPS

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