Impact of National Health Checkup Service on Hard Atherosclerotic Cardiovascular Disease Events and All-Cause Mortality in the General Population

      Whether health checkups favorably impact the occurrence of atherosclerotic cardiovascular disease (ASCVD) and all-cause mortality in the general population remains in debate. We investigated further the impact of health checkups on hard ASCVD events and all-cause mortality. We compared the occurrence of hard ASCVD events and all-cause deaths for 4 years starting in 2010 between participants who used the National Health Checkup Service (NHCS) more than twice and nonparticipants who never used the NHCS from 2006 to 2009. From the 342,594 survivors aged 40 to 69 years old in 2006 listed in the National Health Insurance Service-National Sample Cohort, a total of 55,275 pairs were selected by propensity matching. Hard ASCVD events were defined as the composite of myocardial infarction and stroke. In the 55,275 matched pairs, we found a significant association between the use of the NHCS and the reduction in hard ASCVD events (adjusted hazard ratio = 0.84, 95% confidence interval 0.76 to 0.92, p <0.001) and all-cause deaths (adjusted hazard ratio = 0.50, 95% confidence interval 0.45 to 0.55, p <0.001). The participants had more medical care, including outpatient care and hospitalizations, and took more hypertension and dyslipidemia medications, whereas hospitalizations for more than 60 days were significantly more frequent in the nonparticipants. In the subgroup analysis, the reduction in hard ASCVD events for NHCS participants was significantly greater in patients without a previous history of dyslipidemia or who did not have outpatient care. In conclusion, the use of the NHCS was significantly associated with reduced hard ASCVD events and all-cause mortality in the general population.
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