Mortality in adult offspring of immigrants: a Swedish national cohort study

Elevated mortality among the second-generation (children of migrants) in Europe: what is going wrong? A review

INTRODUCTION

The 'second-generation' (i.e. the children of migrants) represent one of the fastest growing subpopulations of the child and young adult populations in Europe today. The research so far appears to indicate that their mortality risk is elevated relative to people with non-migrant backgrounds.

SOURCES OF DATA

Peer-reviewed publications.

AREAS OF AGREEMENT

Second-generation status is a clear marker of elevated mortality risk in Europe in early life (including stillbirth, perinatal, neonatal and infant mortality) and adulthood, particularly if the parent(s) were born outside of Europe. Socioeconomic inequality plays an important, albeit rarely defining, role in these elevated risks.

AREAS OF CONTROVERSY

It remains unclear what causes-of-death are driving these elevated mortality risks. The exact influence of (non-socioeconomic) explanatory factors (e.g. health care, racism & discrimination, and factors related to integration) on the elevated mortality risks of the second-generation also remains unclear.

GROWING POINTS

The second-generation will continue to grow and diversify in Europe; we must intervene to address these inequalities now.

AREAS TIMELY FOR DEVELOPING RESEARCH

Place more emphasis on the complexity of migration background, specific causes-of-death, and understanding the roles of explanatory factors beyond socioeconomic background.

Mortality Advantage Reversed: The Causes of Death Driving All-Cause Mortality Differentials Between Immigrants, the Descendants of Immigrants and Ancestral Natives in Sweden, 1997-2016

A small but growing body of studies have documented the alarming mortality situation of adult descendants of migrants in a number of European countries. Nearly all of them have focused on all-cause mortality to reveal these important health inequalities. This paper takes advantage of the Swedish population registers to study all-cause and cause-specific mortality among men and women aged 15-44 in Sweden from 1997 to 2016 to a level of granularity unparalleled elsewhere. It adopts a multi-generation, multi-origin and multi-cause-of-death approach. Using extended, competing-risks survival models, it aims to show (1) how the all-cause mortality of immigrants arriving as adults (the G1), immigrants arriving as children (the G1.5) and children of immigrants born in Sweden to at least one immigrant parent (the G2) differs versus ancestral Swedes and (2) what causes-of-deaths drive these differentials. For all-cause mortality, most G1 (not Finns or Sub-Saharan Africans) have a mortality advantage. This contrasts with a near systematic reversal in the mortality of the G1.5 and G2 (notably among men), which is driven by excess accident and injury, suicide, substance use and other external cause mortality. Given that external causes-of-death are preventable and avoidable, the findings raise questions about integration processes, the levels of inequality immigrant populations are exposed to in Sweden and ultimately, whether the legacy of immigration has been positive. Strengths of the study include the use of quality data and advanced methods, the granularity of the estimates, and the provision of evidence that highlights the precarious mortality situation of the seldom-studied G1.5.

Divergent mortality patterns for second generation men of North-African and South-European origin in France: Role of labour force participation

INTRODUCTION

In France, second generation men of South-European origin were recently found to experience a mortality advantage, as opposed to second generation men of North-African origin, subjected to a large amount of excess mortality. We analyze the roles of education and labor force participation in the explanation of these contrasting mortality patterns.

MATERIALS AND METHODS

Our data consisted of a nationally-representative sample of individuals aged 18-64 years derived from the 1999 census, with mortality follow-up until 2010.

RESULTS

The two groups of second generation men, and particularly those of North-African origin, were less educated than the native-origin population, but only the latter was disadvantaged in terms of labor force participation. Relative to the native-origin population, the mortality hazard ratio for second generation men of North-African origin (HR = 1.71 [1.09-2.70]) remained significant after adjusting for level of educational attainment (HR = 1.59 [1.01-2.50]), but not after adjusting for economic activity (HR = 1.20 [0.76-1.89]) or for both variables (1.16 [0.74-1.83]). Conversely, the mortality hazard ratio for second generation men of South-European origin (HR = 0.64 [0.46-0.90]) remained unchanged after adjustment for level of educational attainment and/or economic activity.

CONCLUSION

The findings shed light on the salient role of labor market disadvantage in the explanation of the mortality excess of second generation men of North-African origin in France, and on the favorable situation of second-generation men of South-European origin in terms of labour market position and mortality. The theoretical and policy implications of the findings are discussed.

Age at Immigration, Generational Status, and Death Among Children of Immigrant Mothers: A Longitudinal Analysis of Siblings

Studies have documented that age at immigration and generational status are important predictors of socioeconomic outcomes among children of immigrants. Whether these characteristics are related to long-term risk of death is unknown. Leveraging variation within sibships, we evaluated the association of age at immigration and generational status (i.e., first or second generation) with death among children of immigrant mothers to Sweden. Data included 272,429 individuals (126,701 sibships) aged 15 or more years from the total Swedish population followed between 1990 and 2009. Population-average and sibling fixed-effect regressions were estimated, with the latter controlling for unobserved factors shared by siblings. The foreign-born children of immigrants experienced a 17% higher risk of death than the Swedish-born children of immigrants. This excess risk was evident for external and nonexternal causes of death. In general, a graded association was not detected between age at immigration and death among the foreign-born individuals; however, those arriving during primary school ages appeared especially vulnerable. This study provides robust evidence that among children of immigrants, being foreign born was associated with a long-term death penalty compared with being born in the host country.

Adult mortality among second-generation immigrants in France: Results from a nationally representative record linkage study

BACKGROUND

France has a large population of second-generation immigrants (i.e., native-born children of immigrants) who are known to experience important socioeconomic disparities by country of origin. The extent to which they also experience disparities in mortality, however, has not been previously examined.

METHODS

We used a nationally representative sample of individuals 18 to 64 years old in 1999 with mortality follow-up via linked death records until 2010. We compared mortality levels for second-generation immigrants with their first-generation counterparts and with the reference (neither first- nor second-generation) population using mortality hazard ratios as well as probabilities of dying between age 18 and 65. We also adjusted hazard ratios using educational attainment reported at baseline.

RESULTS

We found a large amount of excess mortality among second-generation males of North African origin compared to the reference population with no migrant background. This excess mortality was not present among second-generation males of southern European origin, for whom we instead found a mortality advantage, nor among North African-origin males of the first-generation. This excess mortality remained large and significant after adjusting for educational attainment.

CONTRIBUTION

In these first estimates of mortality among second-generation immigrants in France, males of North African origin stood out as a subgroup experiencing a large amount of excess mortality. This finding adds a public health dimension to the various disadvantages already documented for this subgroup. Overall, our results highlight the importance of second-generation status as a significant and previously unknown source of health disparity in France.

Migrant mortality differences in the 2000s in Belgium: interaction with gender and the role of socioeconomic position

Background

Belgium has a long history of migration. As the migrant population is ageing, it is crucial thoroughly to document their health. Many studies that have assessed this, observed a migrant mortality advantage. This study will extend the knowledge by probing into the interaction between migrant mortality and gender, and to assess the role of socioeconomic position indicators in this paradox.

Methods

Individually linked data of the 2001 Belgian Census, the National Register and death certificates for 2001–2011 were used. Migrant origin was based on both own and parents’ origin roots. We included native Belgians and migrants from the largest migrant groups aged 25 to 65 years. Absolute and relative mortality differences by migrant origin were calculated for the most common causes of death. Moreover, the Poisson models were adjusted for educational attainment, home ownership and employment status.

Results

We observed a migrant mortality advantage for most causes of death and migrant groups, which was strongest among men. Adjusting for socioeconomic position generally increased the migrant mortality advantage, however with large differences by gender, migrant origin, socioeconomic position indicator and causes of death.

Conclusions

Adjusting for socioeconomic position even accentuated the migrant mortality advantage although the impact varied by causes of death, migrant origin and gender. This highlights the importance of including multiple socioeconomic position indicators when studying mortality inequalities. Future studies should unravel morbidity patterns too since lower mortality not necessarily implies better health. The observed migrant mortality advantage suggests there is room for improvement. However, it is essential to organize preventative and curative healthcare that is equally accessible across social and cultural strata.

Employment status and risk of all-cause mortality among native- and foreign-origin persons in Sweden

Background

The association between exposure to unemployment and increased risk of mortality is well established. Yet migrants and their children often experience a number of stressors in the country of residence which could exacerbate the negative effects of job loss or unemployment. This study examined the extent to which region of origin and generational status modified associations between employment status and risk of all-cause mortality.

Methods

Using population-based registers, an open cohort of 2 178 321 individuals aged 25-64 years was followed from 1993 to 2008. Hazard ratios for mortality were calculated using Cox regression. Employment status and socio-demographic covariates were included as time-varying variables in all models.

Results

Relative to employed native-origin Swedes, excess risk of mortality was found among most groups of unemployed persons. The excess risk of mortality found among African women exposed to long-term unemployment (HR = 3.26, 95% CI: 2.30-4.63), Finnish men exposed to short-and long-term unemployment (HR = 2.74, 95% CI: 2.32-3.24 and HR = 2.39, 95% CI: 2.12-2.69), and second generation Swedish men exposed to short-term unemployment (HR = 2.34, 95% CI: 2.06-2.64) was significantly greater (P < 0.05) than that found among their unemployed native-origin counterparts. Excess risk of mortality among the unemployed in other foreign-origin groups was of a similar or lower magnitude to that found in unemployed native-origin Swedes. A decreased risk of mortality was observed among the employed in nearly all foreign-origin groups.

Conclusions

With some exceptions, mortality risk in foreign-origin individuals across all categories of employment status was generally similar to or lower than the risk observed in native-origin Swedes.