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J Health Econ. 2004 Nov;23(6):1083-99.

Cut-point shift and index shift in self-reported health.

Author information

  • 1Department of Economics, Tinbergen Institute Amsterdam, Free University of Amsterdam, De Boelelaan 1005, Amsterdam 1081 HV, The Netherlands. mlindeboom@feweb.vu.nl

Abstract

There is some concern that ordered responses on health questions may differ across populations or even across subgroups of a population. This reporting heterogeneity may invalidate group comparisons and measures of health inequality. This paper proposes a test for differential reporting in ordered response models which enables to distinguish between cut-point shift and index shift. The method is illustrated using Canadian National Population Health Survey data. The McMaster Health Utility Index Mark 3 (HUI3) is used as a more objective health measure than the simple five-point scale of self-assessed health. We find clear evidence of index shifting and cut-point shifting for age and gender, but not for income, education or language.

PMID:
15556237
[PubMed - indexed for MEDLINE]
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