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01-08-2008 | Uitgave 6/2008

Quality of Life Research 6/2008

Evidence on the construct validity of the Health Utilities Index Mark 2 and Mark 3 in patients with chronic kidney disease

Tijdschrift:
Quality of Life Research > Uitgave 6/2008
Auteurs:
Sara N. Davison, Gian S. Jhangri, David H. Feeny

Abstract

Objective

This study assessed the construct validity of the Health Utilities Index Mark 2 (HUI2) and Mark 3 (HUI3) in the context of chronic kidney disease (CKD) and compared their ability to discriminate between groups of patients with varying disease severity.

Study design and setting

The HUI2 and HUI3 were correlated with the Medical Outcomes 36-Item Short-Form, Kidney Disease Quality of Life Questionnaire, and the Beck Depression Inventory II in 185 patients with stage 4 and 5 CKD.

Results

About 86% of a priori hypotheses were confirmed for HUI2 and 95% for HUI3, providing support for the construct validity of both measures. Mean (SD) overall utility score for the HUI2 was 0.74 (0.20), significantly higher than that for the HUI3, 0.58 (0.26) (P < 0.001). The cognitive, emotion, and pain attributes of the HUI3 were able to identify a significantly greater proportion of patients with impairment compared to the HUI2.

Conclusion

The results are consistent with construct validity for the HUI2 and HUI3 in patients with stage 4 and 5 CKD. However, the HUI3 appears to have superior psychometric properties compared with the HUI2 in this patient population.

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