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Birth order and alcohol-related mortality by ethnic origin and national context: Within-family comparisons for Finland and Sweden

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posted on 08.12.2020, 10:47 by Jan Saarela, Martin Kolk
Background: Previous studies have found that birth order is an important predictor of later life health, including hospitalisation for alcohol use. We examine the relationship between birth order and alcohol-related mortality in two national contexts, within native families who differ on ethnic origin.
Methods: We study the association between birth order and alcohol-related mortality after age 17, using Finnish register data for cohorts born 1953-1999 and Swedish register data for cohorts born 1940-1999. We apply Cox proportional hazard models and use sibling fixed effects that eliminate confounding by factors shared by siblings. We separate full-sibling groups by ethnic origin, which for Finland means mother’s and father’s Finnish or Swedish ethnolinguistic affiliation. For Sweden, we distinguish native-born according to whether one or both parents were born in Sweden or Finland.
Results: We find a positive correlation between birth order and alcohol-related mortality, but only for ethnic Finns in Finland and primarily men. Within these sibling groups, second-borns have an alcohol-related mortality risk that is 9% higher than that of first-borns, third-borns 19% higher, fourth-borns 23% higher, and fifth- or higher-borns 48% higher. No such birth order associations can be found for any of the other ethnic groups analysed in Finland or Sweden.
Conclusions. Our findings suggest that cultural-related behaviours typical for ethnic groups, and the national context in which they are studied, are relevant for whether any association between birth order and alcohol-related mortality can be observed. Differences in the social interplay within the family may be an important factor.

Funding

Riksbankens jubileumsfond, grant number P17-0330:1

the Swedish Research Council for Health, Working life and Welfare (FORTE), grant number 2016-07115

the "Demographic change and ethnolinguistic identity in an intergenerational perspective: The Swedish‐speaking population in Finland (DemSwed)" center of excellence funded by Åbo Akademi University

History

ISSN

2002-617X

Original title

Birth order and alcohol-related mortality by ethnic origin and national context: Within-family comparisons for Finland and Sweden

Original language

English

Publication date

08/12/2020

Affiliation (institution of first SU-affiliated author)

310 Sociologiska institutionen | Department of Sociology