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KMID : 0311120200610120997
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Yonsei Medical Journal
2020 Volume.61 No. 12 p.997 ~ p.1003
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Long-Term Aspirin Use and 5-Year Survival in Healthy Adults: A Population-Based Cohort Study in South Korea
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Oh Tak-Kyu
Song In-Ae
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Abstract
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Purpose: We investigated whether long-term aspirin use is associated with 5-year all-cause mortality.
Materials and Methods: Participants were individuals aged ≥40 years who were registered in the 2010 sample cohort database of the National Health Insurance Service in South Korea. Aspirin users were divided into three groups: continuous users (2006?2010), previous users (2006?2009), and new users (2010). Individuals with a history of coronary artery disease and cerebrovascular disease were excluded. Five-year all-cause mortality was defined as mortality due to any cause from January 1, 2011 to December 31, 2015. Data were analyzed by multivariable Cox regression.
Results: In total, 424444 individuals were included. Five-year all-cause mortality was 9% lower in continuous aspirin users than in unexposed individuals [hazard ratio (HR): 0.91, 95% confidence interval (CI): 0.86?0.97; p=0.003]. Five-year all-cause mortality rates in the new aspirin users (HR: 1.00, 95% CI: 0.90?1.11; p=0.995) and previous aspirin users (HR: 1.01, 95% CI: 0.94?1.09; p=0.776) were not significantly different from that in unexposed individuals. In the 40?60-year age group, 5-year all-cause mortality in the continuous aspirin users was 24% lower (HR: 0.76, 95% CI: 0.64?0.90; p=0.002) than that in unexposed individuals. However, in the >60-year age group, there was no significant association between aspirin use and 5-year all-cause mortality (HR: 0.96, 95% CI: 0.90?1.02; p=0.199).
Conclusion: Long-term aspirin use is associated with reduced 5-year all-cause mortality in healthy adults, especially those aged <60 years.
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KEYWORD
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Aspirin, mortality, neoplasm, cohort study
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