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KMID : 1130220200240020091
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Annals of Geriatric Medicine and Research
2020 Volume.24 No. 2 p.91 ~ p.98
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Effects of Statin Use for Primary Prevention among Adults Aged 75 Years and Older in the National Health Insurance Service Senior Cohort (2002?2015)
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Kim Sun-Young
Choi Hang-Seok
Won Chang-Won
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Abstract
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Background: This study aimed to identify adverse events and mortality in adults aged 75 years and older who were initially prescribed statins for primary prevention.
Methods: This retrospective study analyzed the data from the National Health Insurance Corporation?Senior Cohort from 2002 to 2015. An exact block matched model was constructed from statin user and statin non-user groups.
Results: The study sample comprised 1,370 older adults (mean age, 78 years), with 685 statin non-users matched to 685 new statin users. Compared to non-users, the adjusted hazard ratios (HRs) of new statin users were 0.83 (p=0.04) for all-cause mortality, 1.24 (p=0.03) for major adverse cardiovascular events, and 1.18 (p=0.06) for new-onset diabetes mellitus. In a sub-analysis of statin use duration, longer statin use (>5 years) was associated with a significantly lower risk of all-cause mortality (HR=0.76, p=0.01) but not with major adverse cardiovascular events (HR=0.88, p=0.36) or new-onset diabetes mellitus (HR=0.95, p=0.78) after adjusting for age, sex, body mass index, diabetes mellitus, hypertension, aspirin use, and antiplatelet use.
Conclusion: Our findings suggested that statins started for primary prevention in older adults aged 75 years and older had an advantageous effect on all-cause mortality only if used for at least 5 years.
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KEYWORD
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Aged, Cardiovascular disease, Hydroxymethylglutaryl-CoA reductase inhibitors, Mortality, Primary prevention
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