Marital status and mortality among Japanese men and women: the Japan Collaborative Cohort Study
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Why the study?
Does being single, divorced, or widowed increase the risk of mortality compared to being married in Japanese men and women?
Population
90,064 Japanese men and women aged 40-79 from 45 communities across Japan, without a history of stroke…
Comparison
Single, divorced, or widowed marital status vs Married status
Design
Cohort
Follow-up
average 9.9 years
Authors
Discussion
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Member takes
Implication
Never-married status was associated with higher mortality in both sexes and divorce/widowhood mainly in men; leaves open whether social support interventions could reduce risks.
Structured PICO
Does being single, divorced, or widowed increase the risk of mortality compared to being married in Japanese men and women?
P
Population
90,064 Japanese men and women aged 40-79 (37,781 men and 52,283 women) from 45 communities across Japan, without a history of stroke, coronary heart disease, or cancer at baseline.
I
Intervention
Single (never-married), divorced, or widowed marital status
C
Comparator
Married status
O
Outcome
Mortality from cardiovascular disease, respiratory disease, external causes, and all causeshard clinical
Being single, divorced, or widowed is associated with a higher risk of all-cause and cardiovascular mortality compared to being married, with the adverse effects being more pronounced in men.
Limitations
- Possible confounding from residual factors
- Differential follow-up among marital status categories due to moving (censoring)
- Marital status measurements not repeated during follow-up leading to potential misclassification
Cite This Study
Ikeda et al. (2007) studied this question.
Topics
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