1. Examining cultural background and the protective effect of marriage on alcohol use disorder in Sweden.
- Author
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Salvatore JE, Larsson Lönn S, Chartier KG, Sundquist J, Kendler KS, and Sundquist K
- Subjects
- Humans, Sweden, Female, Male, Adult, Middle Aged, Proportional Hazards Models, Alcoholism ethnology, Alcoholism prevention & control, Emigrants and Immigrants statistics & numerical data, Emigrants and Immigrants psychology, Finland, Protective Factors, Alcohol-Related Disorders prevention & control, Alcohol-Related Disorders ethnology, Young Adult, Marriage
- Abstract
Background: Little is known about whether the protective effect of marriage on alcohol use disorder (AUD) varies by cultural background., Aims: Using Swedish national data, we examined whether marriage is associated with a stronger reduction in AUD risk among Swedes of a Swedish background (i.e. those with two Swedish-born parents) compared to Swedes with a foreign background (i.e. one or two foreign-born parents) and whether the protective effect of marriage depends on whether the spouse has a Swedish or foreign background., Method: Among those born in Sweden 1960 to 1990 (3,093,439; 49% female), associations between cultural background and AUD registration during marriage were estimated with Cox models. Analyses of intra- and intermarriage on AUD registration were examined with Cox models and limited to groups of focal individuals for which there was sufficient statistical power, which included Swedes with two Swedish-born parents, two Finnish-born parents, or bicultural background (one Swedish and one foreign-born parent). Models were sex stratified., Results: Marriage was associated with reductions in AUD risk among those with Swedish and with foreign backgrounds, though less protective for males of Finnish versus Swedish background as indicated by a significant interaction between marital status and parental region of birth, HR = 0.80, 95% CI [0.71, 0.90]. Marriage was also less protective for those with a bicultural versus Swedish background, HR
males = 0.87, 95% CI [0.81, 0.92] and HRfemales = 0.88, 95% CI [0.81, 0.97]. Among those of Swedish background, marriage to a spouse with a foreign versus Swedish background was associated with increased risk of AUD, HRmales = 1.26, 95% CI [1.19, 1.34] and HRfemales = 1.20, 95% CI [1.10, 1.31]. This risk was diminished when family-level confounders (genes, rearing environment) were controlled for., Conclusions: The protective effect of marriage depends on cultural background, with some evidence that increased risks associated with a spouse's foreign background are confounded by family-level factors.- Published
- 2025
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