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The Relationship between Income and Morbidity—Longitudinal Findings from the German Ageing Survey

Author

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  • Elena Reche

    (Department of Health Economics and Health Services Research, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany)

  • Hans-Helmut König

    (Department of Health Economics and Health Services Research, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany)

  • André Hajek

    (Department of Health Economics and Health Services Research, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany)

Abstract

It is often assumed that higher income contributes to physical health. Indeed, there is a huge amount of research showing a strong significant association between income and health. However, very few studies have used longitudinal data and an objective variable for health, such as morbidity. Therefore, this study aims to examine the association between the income and morbidity of individuals over time. Data from a total of four waves (year 2008 to year 2017) of the nationally representative German Ageing Survey was analyzed by linear fixed-effects regressions. The used equivalized income was based on the respondents’ monthly net household income. To obtain a comprehensive picture of the dependent variable morbidity, self-reported diseases, current symptoms, and physician-diagnosed diseases were examined. The analyses showed no significant association between percentage changes in income and morbidity in the total sample. Even after considering selected socioeconomic groups in further subgroup analyses, there was no significant within-person association found over time. In summary, the unexpected results of this study suggest that the previously assumed link between income and health in Germany may be called into question. Further research based on longitudinal studies is, therefore, required.

Suggested Citation

  • Elena Reche & Hans-Helmut König & André Hajek, 2021. "The Relationship between Income and Morbidity—Longitudinal Findings from the German Ageing Survey," IJERPH, MDPI, vol. 18(23), pages 1-14, November.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:23:p:12365-:d:687027
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    References listed on IDEAS

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