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Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
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Partnership Status, Health, and Mortality: Selection or Protection?

Hill Kulu1, Júlia Mikolai1, Sebastian Franke2

  • 1Centre for Population Change, and School of Geography and Sustainable Development, University of St Andrews, St Andrews, UK.

Demography
|January 16, 2024
PubMed
Summary
This summary is machine-generated.

Partnered individuals experience lower mortality rates compared to nonpartnered individuals. This study supports the partnership protection hypothesis, even for nonmarital unions, after accounting for selection effects.

Keywords:
MortalityPartnership statusSimultaneous-equations hazard modelSurvival analysisUK

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Area of Science:

  • Sociology
  • Demography
  • Public Health

Background:

  • Partnered individuals exhibit better health and lower mortality than nonpartnered individuals.
  • Distinguishing cohabitants from other nonmarried groups accentuates health disparities between partnered and nonpartnered persons.
  • Debate exists whether partnership leads to better health (protection) or if healthier individuals are more likely to partner (selection).

Purpose of the Study:

  • To investigate health and mortality differences by partnership status in England and Wales.
  • To analyze the causes of mortality differences.
  • To contribute to the protection versus selection debate in partnership research.

Main Methods:

  • Utilized combined data from the British Household Panel Survey and the UK Household Longitudinal Study.
  • Applied a simultaneous-equations hazard model to control for observed and unobserved selection into partnerships.
  • Developed a novel approach to identify frailty based on self-rated health.

Main Results:

  • Partnered individuals demonstrated significantly lower mortality rates compared to nonpartnered individuals.
  • Observed some selection into and out of unions based on unobserved health characteristics.
  • Mortality differences by partnership status persisted even after controlling for selection.

Conclusions:

  • The findings offer strong support for the marital protection hypothesis.
  • The protective effects of partnership extend to nonmarital unions.
  • Partnership status is a significant determinant of mortality, independent of selection effects.