A framework for testing the equality between the health concentration curve and the 45‐degree line

Summary The health concentration curve is the standard graphical tool to depict socioeconomic health inequality in the literature on health inequality. This paper shows that testing for the absence of socioeconomic health inequality is equivalent to testing if the conditional expectation of health o...

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Bibliographic Details
Published inHealth economics Vol. 27; no. 5; pp. 887 - 896
Main Authors Khaled, Mohamad A., Makdissi, Paul, Tabri, Rami V., Yazbeck, Myra
Format Journal Article
LanguageEnglish
Published England Wiley Periodicals Inc 01.05.2018
Subjects
Economic models
Equality
Health
Health behavior
health concentration curves
Health disparities
Health economics
Health status
Inequality
inference
Regularity
socioeconomic health inequality
Specification
health concentration curves
inference
socioeconomic health inequality
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Summary:Summary The health concentration curve is the standard graphical tool to depict socioeconomic health inequality in the literature on health inequality. This paper shows that testing for the absence of socioeconomic health inequality is equivalent to testing if the conditional expectation of health on income is a constant function that is equal to average health status. In consequence, any test for parametric specification of a regression function can be used to test for the absence of socioeconomic health inequality (subject to regularity conditions). Furthermore, this paper illustrates how to test for this equality using a test for parametric regression functional form and applies it to health‐related behaviors from the National Health Survey 2014.
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ISSN:1057-9230
1099-1050
1099-1050
DOI:10.1002/hec.3637