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Low immigrant mortality in England and Wales: a data artefact?
1School of Environmental Sciences, University of Liverpool, Roxby Building, Liverpool L69 7ZT, United Kingdom.
Social Science & Medicine (1982)
|September 19, 2014
Summary
International migrants in England and Wales exhibit lower mortality rates than native-born populations. This finding holds true even after accounting for data uncertainties and socioeconomic factors, suggesting genuine health advantages.
Area of Science:
- Demography
- Public Health
- Sociology
Background:
- Previous studies indicate lower mortality among immigrants, often attributed to health selection and behaviors.
- However, the impact of data quality, specifically registration of moves, on migrant mortality estimates is under-researched.
- Potential data artifacts can lead to underestimation of immigrant mortality rates.
Purpose of the Study:
- To investigate immigrant mortality in England and Wales from 1971 to 2001.
- To assess the influence of data quality, particularly move registration, on mortality estimates.
- To determine if observed lower mortality among immigrants is a genuine phenomenon or a data artifact.
Main Methods:
- Utilized the Office for National Statistics Longitudinal Study (ONS LS), a 1% sample of England and Wales.
- Applied parametric survival models to analyze the mortality of approximately 450,000 individuals.
- Conducted sensitivity analyses to evaluate the impact of entry and exit uncertainties on mortality rates.
Main Results:
- Most international migrants demonstrated lower mortality rates compared to the native population in England and Wales.
- These mortality differences remained significant after adjusting for entry and exit uncertainties.
- The disparities in mortality became more pronounced after controlling for individual socioeconomic characteristics.
Conclusions:
- The study confirms lower mortality rates among international migrants in England and Wales.
- The observed lower mortality is not attributable to data artifacts related to move registration.
- Findings support the existence of genuine health advantages among immigrant populations, further enhanced by socioeconomic factors.
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