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Measurement equivalence of the Consumer Assessment of Healthcare Providers and Systems (CAHPS) Medicare survey items between non-Hispanic whites and Asians.
Published Web Location
https://doi.org/10.1200/jco.2016.34.7_suppl.259Abstract
259 Background: Asians report worse experiences with care than Whites. This could be due to true differences in care received, expectations about care, or survey response styles. To examine measurement equivalence of the Consumer Assessment of Healthcare Providers and Systems (CAHPS) Medicare survey items between Whites and Asians. Methods: We conducted multiple group confirmatory factor analyses to evaluate measurement equivalence of CAHPS Medicare survey data between White and Asian Medicare beneficiaries for three CAHPS reporting composites (communication with personal doctor, access to care, plan customer service) and global ratings of care using pooled CAHPS data from 2007-2011. Responses were obtained from non-Hispanic whites (n = 1,326,410) and Asians (n = 40,672). The median age for whites was 70, with 24% 80 or older, and 70 for Asians, with 23% 80 or older. Fifty-eight percent of the whites and 56% of the Asians were female. Results: A model without group-specific estimates fit the data as well as a model that included 12 group-specific estimates suggested by Lagrange multiplier tests (Comparative Fit Index = 0.922, Root Mean Square Error of Approximation = 0.064). Three of the 12 group-specific estimates consisted of 7 factor loadings, 3 measured variable errors, and 2 item intercepts. Six of the factor loadings were larger for Asians than for whites. Conclusions: This study provides general support for measurement equivalence in response to the CAHPS Medicare survey composites (communication, access, customer service) and global ratings between White and Asian respondents, supporting comparison of care experiences for the two groups.
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