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Heart. 2008 Jan;94(1):75-82. Epub 2007 Jun 25.

Explaining age-specific inequalities in mortality from all causes, cardiovascular disease and ischaemic heart disease among South Korean male public servants: relative and absolute perspectives.

Author information

1
Department of Preventive Medicine, University of Ulsan College of Medicine, 388-1 Pungnap-2Dong Songpa-Gu, Seoul, 138-736 Korea. youngk@amc.seoul.kr

Abstract

OBJECTIVE:

To examine age-specific patterns in the ability of major cardiovascular risk factors to explain relative and absolute socioeconomic inequalities in mortality from all causes, cardiovascular disease (CVD), and ischaemic heart disease (IHD).

DESIGN:

Prospective cohort study.

SETTING:

South Korea.

SUBJECTS:

575 377 male public servants aged 30-64 with 16 998 deaths between 1995 and 2003.

MAIN OUTCOMES:

All-cause, CVD, and IHD mortality.

RESULTS:

Four cardiovascular risk factors (cigarette smoking, blood pressure, fasting serum glucose, and serum total cholesterol) were significantly associated with mortality risk. Changing relationships in socioeconomic distribution of risk factors with age were observed. The magnitude of reduction in percent change in absolute risk was greater than that in relative risk. While the risk factors explained only 15.2% of excess RR for all-cause mortality in low-income men aged 30-44, the absolute excess risk of all-cause mortality was reduced by 48.3% when the risk factors were removed from the whole population. This pattern was generally true for all causes, CVD, and IHD, and true for all age groups and risk factors examined. Cigarette smoking and hypertension were the leading contributors in explaining relative and absolute inequality in mortality.

CONCLUSION:

Policy efforts to eliminate major cardiovascular risk factors in the general population may have a significant effect on reducing the absolute burden of socioeconomic inequality in mortality. Policy efforts to attenuate socioeconomic inequality in cardiovascular risk factors need to be directed to younger age groups in South Korea.

PMID:
17591645
DOI:
10.1136/hrt.2007.117747
[Indexed for MEDLINE]

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