Selective migration, health and deprivation: a longitudinal analysis

Area of Science:

• Social Epidemiology
• Population Health
• Geographic Health Disparities

Background:

• Population migration influences area demographics and socioeconomic status.
• Health status differences across geographical locations are linked to area deprivation and migration patterns.
• The interplay between health, deprivation, and migration requires further research.

Purpose of the Study:

• To investigate how population migration affects area-level relationships between health and deprivation.
• To identify systematic sorting of individuals contributing to these relationships.
• To analyze changes in health inequalities over time due to migration.

Main Methods:

• Utilized the Office for National Statistics (ONS) England and Wales Longitudinal Study (LS) from 1971-1991.
• Tracked individuals to analyze migration patterns and their correlation with health (limiting long-term illness, mortality) and deprivation (Carstairs quintiles).
• Compared health-deprivation relationships for migrants and non-migrants, and across different deprivation levels.

Main Results:

• Younger migrants are generally healthier than non-migrants.
• Migrants moving from more to less deprived areas exhibit better health outcomes.
• Migration significantly alters area-level health and mortality rates, predominantly increasing inequalities.
• Healthy migrants moving from deprived to less deprived areas are the largest flow, raising ill-health rates in origins and lowering them in destinations.

Conclusions:

• Migration is a primary driver of increasing health inequalities between deprived and less deprived areas.
• The sorting of individuals based on health and migration patterns exacerbates geographical health disparities.
• Understanding migration's role is crucial for addressing health inequalities.