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The Casual Effect of Family Income on Child Health: A Re-examination Using an Instrumental Variables Approach

Author

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  • Daniel Kuehnle

    (Department of Economics, Friedrich-Alexander-University Erlangen-Nuremberg)

Abstract

Despite a recent growth in studies examining the association between family income and child health, very few studies investigate whether this is a causal relationship. This paper addresses this major methodological gap and examines the causal effect of family income on child health in the UK. Using rich observational data from a British cohort study, we exploit exogenous variation in local labour market characteristics to instrument for family income. We estimate the effect of family income on subjective child health and control for potential transmission channels through which income could affect child health. The results from our models provide novel evidence that income has a small but significant causal effect on subjective child health. Moreover, the analysis shows that parental health does not drive a spurious relationship between family income and child health as argued in recent contributions. We do not find significant effects of family income on chronic indicators of child health. The results are robust to different sets of instrumental variables, and to alternative measures of income. Despite a recent growth in studies examining the association between family income and child health, very few studies investigate whether this is a causal relationship. This paper addresses this major methodological gap and examines the causal effect of family income on child health in the UK. Using rich observational data from a British cohort study, we exploit exogenous variation in local labour market characteristics to instrument for family income. We estimate the effect of family income on subjective child health and control for potential transmission channels through which income could affect child health. The results from our models provide novel evidence that income has a small but significant causal effect on subjective child health. Moreover, the analysis shows that parental health does not drive a spurious relationship between family income and child health as argued in recent contributions. We do not find significant effects of family income on chronic indicators of child health. The results are robust to different sets of instrumental variables, and to alternative measures of income.

Suggested Citation

  • Daniel Kuehnle, 2013. "The Casual Effect of Family Income on Child Health: A Re-examination Using an Instrumental Variables Approach," Melbourne Institute Working Paper Series wp2013n13, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
  • Handle: RePEc:iae:iaewps:wp2013n13
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    References listed on IDEAS

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    Cited by:

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    3. Adnan M. S. Fakir, 2016. "Revisiting the child health-wealth nexus," Health Economics Review, Springer, vol. 6(1), pages 1-13, December.

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    More about this item

    Keywords

    Child health; income gradient; instrumental variables; transmission channels; UK;
    All these keywords.

    JEL classification:

    • I1 - Health, Education, and Welfare - - Health

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