Journal
JOURNAL OF CLINICAL EPIDEMIOLOGY
Volume 58, Issue 2, Pages 138-141Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jclinepi.2004.08.005
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Objective: The Short Form 12 (SF-12) is widely used in primary care settings. The RAND-12 Health Status Inventory (HSI) and the Health Utilities Index Mark 3 (HU13) have not been as widely used in such settings. The objective of this study was to examine the Construct validity of the RAND-12 and HU13 in the context of high-risk primary care patients. Study Design and Setting: The SF-12, HU12, and HU13 were administered to a cohort of high-risk primary care patients. RAND-12 summary scores for physical and mental health were generated. Single-attribute utility scores for each dimension of health status and overall health in HU13 were computed. A priori hypotheses were specified. Results: In general, the relationships among RAND-12 and HU13 scores were consistent with construct validity. Twelve of 24 a priori predictions were confirmed. However, predictions about the correlations between the number of medical conditions and the number of medications and the measures of health-related quality of life were, in general, not confirmed. Conclusions: The RAND-12 and HU13 seem to be useful among primary care patients with diverse chronic conditions. Further investigation is warranted. (C) 2005 Elsevier Inc. All rights reserved.
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