Volume 34 - Article 22 | Pages 615–656  

Differences in all-cause mortality: A comparison between immigrants and the host population in Norway 1990-2012

By Astri Syse, Bjorn H. Strand, Oyvind Naess, Ólöf Anna Steingrímsdóttir, Bernadette N. Kumar

Abstract

Background: Differences in all-cause mortality between immigrants and host populations may provide insight into health inequities that could be reduced.

Objective: Death risks of adult immigrants were compared to those of the host population to assess effects of country of origin, duration of residence, calendar period, and sociodemographic characteristics, i.e., sex, education, and marital and parental status.

Methods: Registry data encompassing the entire Norwegian population age 25-79 in 1990-2012 were used to compare death risks in various immigrant groups and the host population, using discrete-time hazard regression models with time-varying covariates.

Results: Over 451,000 deaths occurred in around 4.4 million individuals. After adjusting for sex, age, and calendar period, immigrants had an 8% survival advantage (odds ratio (OR) 0.92). Death-risk estimates for immigrants were lowered pronouncedly by further adjustment of sociodemographic factors (OR 0.81). The greatest survival advantage was observed among immigrants with a short duration of residence. With increasing lengths of stay, immigrants’ risk of death became similar to that of the host population. The survival advantage was most pronounced for younger, unmarried, and childless immigrants. Although the survival of Central and Eastern European immigrants improved over time, none of the groups had a higher adjusted death risk than the host population.

Conclusions: Immigrants have a 20% survival advantage compared to the host population. The convergence in mortality with increasing duration of residence suggests that ‘healthy migrant’ and ‘acculturation’ effects counteract each other, and warrants further research on the health and welfare of long-term immigrants.

Author's Affiliation

• Astri Syse - Folkehelseinstituttet (Norwegian Institute of Public Health), Norway EMAIL
• Bjorn H. Strand - Folkehelseinstituttet (Norwegian Institute of Public Health), Norway EMAIL
• Oyvind Naess - Folkehelseinstituttet (Norwegian Institute of Public Health), Norway EMAIL
• Ólöf Anna Steingrímsdóttir - Folkehelseinstituttet (Norwegian Institute of Public Health), Norway EMAIL
• Bernadette N. Kumar - Nasjonal Kompetanseenhet for Migrasjons- og Minoritetshelse (NAKMI), Norway EMAIL

Other articles by the same author/authors in Demographic Research

Does cancer affect the divorce rate?
Volume 16 - Article 15

Most recent similar articles in Demographic Research

Is single parenthood increasingly an experience of less-educated mothers? A European comparison over five decades
Volume 51 - Article 34    | Keywords: age, children, cross-national comparison, education, Europe, family life course, inequality, single motherhood

A Bayesian model for age at death with cohort effects
Volume 51 - Article 33    | Keywords: age at death, Bayesian approach, cohort effects, Italy, mortality

On the relationship between life expectancy, modal age at death, and the threshold age of the life table entropy
Volume 51 - Article 24    | Keywords: Gompertz law, life expectancy, lifespan variation, longevity, mode, mortality

The role of sex and age in seasonal mortality – the case of Poland
Volume 51 - Article 17    | Keywords: mortality, Poland, seasonality, sex differences

A multidimensional global migration model for use in cohort-component population projections
Volume 51 - Article 11    | Keywords: age dependency, education, international migration, migration, modelling, population projection, projections