Key result
Higher socioeconomic status was inversely associated with mortality from myocardial infarction and stroke subtypes, independent of cardiovascular risk factors.
Why the study?
Does socioeconomic status affect the risk of myocardial infarction and stroke subtypes in Korean male public servants?
Cohort (n=578,756)
Does socioeconomic status affect the risk of myocardial infarction and stroke subtypes in Korean male public servants?
Higher socioeconomic status is associated with lower cardiovascular mortality, independent of traditional risk factors, potentially due to better access to medical care.
Lower SES was associated with higher MI/stroke mortality independent of risk factors; leaves open mechanisms and equity interventions in observational data.
OBJECTIVES: We examined the association between socioeconomic status (SES) and myocardial infarction and stroke subtypes, including the possible mediating influence of cardiovascular risk factors. METHODS: We evaluated data on 578756 Korean male public servants aged 30 to 58 years from August 1, 1990, to July 31, 2001. RESULTS: SES had inverse associations with mortality because of myocardial infarction and stroke subtypes, which were not changed by an adjustment for, or stratification by, cardiovascular risk factors. For nonfatal events, SES had positive, null, and inverse associations with myocardial infarction, ischemic stroke, and hemorrhagic stroke, respectively. The association between SES and nonfatal myocardial infarction depended on the presence of risk factors and was positive only among men who had cardiovascular risk factors. Case-fatality after hospital admission for cardiovascular diagnoses was significantly lower among higher SES groups, even after risk factor adjustment. CONCLUSIONS: Inverse SES associations with cardiovascular diseases were not mediated by cardiovascular risk factors among men who were undergoing economic transition. Socioeconomically patterned access to medical care may partly explain these socioeconomic gradients.
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Yun Mi Song (2005) conducted a cohort in Cardiovascular disease (n=578,756). Socioeconomic status vs. Different socioeconomic status groups was evaluated on Mortality because of myocardial infarction and stroke subtypes. Higher socioeconomic status was inversely associated with mortality from myocardial infarction and stroke subtypes, independent of cardiovascular risk factors.
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