期刊
INTERNATIONAL JOURNAL OF EPIDEMIOLOGY
卷 40, 期 3, 页码 647-661出版社
OXFORD UNIV PRESS
DOI: 10.1093/ije/dyq267
关键词
Birthweight; gestational age; all-cause mortality; cardiovascular mortality; cancer mortality; early origins of health and disease hypothesis
资金
- Liaison Committee
- Central Norway Regional Health Authority (RHA)
- Norwegian University of Science and Technology (NTNU)
Background Small birth size may be associated with increased risk of cardiovascular diseases (CVD), whereas large birth size may predict increased risk of obesity and some cancers. The net effect of birth size on long-term mortality has only been assessed in individual studies, with conflicting results. Methods The Meta-analyses of Observational Studies in Epidemiology (MOOSE) guidelines for conducting and reporting meta-analysis of observational studies were followed. We retrieved 22 studies that assessed the association between birthweight and adult mortality from all causes, CVD or cancer. The studies were systematically reviewed and those reporting hazard ratios (HRs) and 95% confidence intervals (95% CIs) per kilogram (kg) increase in birthweight were included in generic inverse variance meta-analyses. Results For all-cause mortality, 36 834 deaths were included and the results showed a 6% lower risk (adjusted HR = 0.94, 95% CI: 0.92-0.97) per kg higher birthweight for men and women combined. For cardiovascular mortality, the corresponding inverse association was stronger (HR = 0.88, 95% CI: 0.85-0.91). For cancer mortality, HR per kg higher birthweight was 1.13 (95% CI: 1.07-1.19) for men and 1.04 (95% CI: 0.98-1.10) for women (P-interaction = 0.03). Residual confounding could not be eliminated, but is unlikely to account for the main findings. Conclusion These results show an inverse but moderate association of birthweight with adult mortality from all-causes and a stronger inverse association with cardiovascular mortality. For men, higher birthweight was strongly associated with increased risk of cancer deaths. The findings suggest that birthweight can be a useful indicator of processes that influence long-term health.
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