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Are International Comparisons of Subjective Health Status Relevant? An Assessment Using Anchoring Vignettes


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  • Salim Lardjane


  • Paul Dourgnon


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    When, in a survey question, response items are used in different ways by respondents, the answers are said to be affected by an item bias or by a DIF (Differential Item Functioning) effect. In such a case, the responses must be corrected before they can be used to formulate comparative hypotheses on the subjective health status of subpopulations. In this paper, we present a method for detecting and correcting for DIF effects in self-assessments of subjective health. The method is based on the individuals' assessment of health status for hypothetical situations described in short vignettes. It is exemplified by detecting a possible DIF effect in the self-assessment of physical pain, according to the geographical origin of the samples from the Share 2004 survey. Correcting for this effect leads to different conclusions than the original self-assessments concerning the respective subjective health status of the Swedish and Dutch samples.

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    Bibliographic Info

    Article provided by Institut National de la Statistique et des Etudes Economiques in its journal Economie et Statistique.

    Volume (Year): 403-404 (2007)
    Issue (Month): (December)
    Pages: 165-177

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    Handle: RePEc:crs:ecosta:es403-404i

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    Related research

    Keywords: Subjective Health Measurement; Differential Item Functioning; Anchoring Vignettes; International Comparisons;

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