Dataset Information

Smoking and atherosclerotic cardiovascular disease risk in young men: the Korean Life Course Health Study.

ABSTRACT: OBJECTIVE:To examine the effect of smoking on risk of atherosclerotic cardiovascular disease (ASCVD) in Korean young men and to examine whether serum total cholesterol levels could modify the effect of smoking on ASCVD. DESIGN:A prospective cohort study within a national insurance system. SETTING:Health screenings provided by national insurance in 1992 and 1994. PARTICIPANTS:A total of 118 531 young men between 20 and 29 years of age and were followed up for an average of 23 years. OUTCOME MEASURE:To assess the independent effects of smoking on the risk of ischaemic heart disease (IHD), stroke and ASCVD, Cox proportional hazards regression models were used, controlling for age, hypertension, diabetes, hypercholesterolaemia and alcohol drinking. RESULTS:The total number of current smokers was 78 455 (66.2%), and 94 113 (79.7%) of the sample recorded a total cholesterol level <200 mg/dL measured at baseline. Between 1993 and 2015, 2786 cases of IHD (53/100 000 person year), 2368 cases of stroke (45.4/100 000 person year) and 6368 ASCVD (122.7/100 000 person year) occurred. The risk of IHD, stroke and total ASCVD events was found to increase for current smokers, with a HR with 95% CI of 1.5 (95% CI 1.3 to 1.6), 1.4 (95% CI 1.2 to 1.6) and 1.4 (95% CI 1.3 to 1.5), respectively. Furthermore, the risks above were also found throughout the range of serum levels of cholesterol. CONCLUSIONS:Smoking among Korean young adult men was independently associated with increased risk of IHD, stroke and ASCVD. The concentration of cholesterol in Korean men did not modify the effect of smoking on ASCVD.

SUBMITTER: Jee Y

PROVIDER: S-EPMC6575821 | biostudies-other | 2019 Jun

REPOSITORIES: biostudies-other

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Smoking and atherosclerotic cardiovascular disease risk in young men: the Korean Life Course Health Study.

Jee Yongho Y Jung Keum Ji KJ Lee Sunmi S Back Joung Hwan JH Jee Sun Ha SH Cho Sung-Il SI

BMJ open 20190612 6

<h4>Objective</h4>To examine the effect of smoking on risk of atherosclerotic cardiovascular disease (ASCVD) in Korean young men and to examine whether serum total cholesterol levels could modify the effect of smoking on ASCVD.<h4>Design</h4>A prospective cohort study within a national insurance system.<h4>Setting</h4>Health screenings provided by national insurance in 1992 and 1994.<h4>Participants</h4>A total of 118 531 young men between 20 and 29 years of age and were followed up for an avera ...[more]

PMID: 31196897

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Project description:ImportanceSmoking is associated with atherosclerotic cardiovascular disease, but the relative contribution to each subtype (coronary artery disease [CAD], peripheral artery disease [PAD], and large-artery stroke) remains less well understood.ObjectiveTo determine the association between genetic liability to smoking and risk of CAD, PAD, and large-artery stroke.Design, setting, and participantsMendelian randomization study using summary statistics from genome-wide associations of smoking (UK Biobank; up to 462?690 individuals), CAD (Coronary Artery Disease Genome Wide Replication and Meta-analysis plus the Coronary Artery Disease Genetics Consortium; up to 60?801 cases, 123?504 controls), PAD (VA Million Veteran Program; up to 24?009 cases, 150?983 controls), and large-artery stroke (MEGASTROKE; up to 4373 cases, 406?111 controls). This study was conducted using summary statistic data from large, previously described cohorts. Review of those publications does not reveal the total recruitment dates for those cohorts. Data analyses were conducted from August 2019 to June 2020.ExposuresGenetic liability to smoking (as proxied by genetic variants associated with lifetime smoking index).Main outcomes and measuresRisk (odds ratios [ORs]) of CAD, PAD, and large-artery stroke.ResultsGenetic liability to smoking was associated with increased risk of PAD (OR, 2.13; 95% CI, 1.78-2.56; P?=?3.6?×?10-16), CAD (OR, 1.48; 95% CI, 1.25-1.75; P?=?4.4?×?10-6), and stroke (OR, 1.40; 95% CI, 1.02-1.92; P?=?.04). Genetic liability to smoking was associated with greater risk of PAD than risk of large-artery stroke (ratio of ORs, 1.52; 95% CI, 1.05-2.19; P?=?.02) or CAD (ratio of ORs, 1.44; 95% CI, 1.12-1.84; P?=?.004). The association between genetic liability to smoking and atherosclerotic cardiovascular diseases remained independent from the effects of smoking on traditional cardiovascular risk factors.Conclusions and relevanceIn this mendelian randomization analysis of data from large studies of atherosclerotic cardiovascular diseases, genetic liability to smoking was a strong risk factor for CAD, PAD, and stroke, although the estimated association was strongest between smoking and PAD. The association between smoking and atherosclerotic cardiovascular disease was independent of traditional cardiovascular risk factors.

Dataset Information

Smoking and atherosclerotic cardiovascular disease risk in young men: the Korean Life Course Health Study.

Publications

Smoking and atherosclerotic cardiovascular disease risk in young men: the Korean Life Course Health Study.

Similar Datasets

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