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- Association between smoking status and subclinical coronary atherosclerosis in asymptomatic Korean individuals
- Hyeji Lee, Jinhee Ha, Kyung Sun Park, Young-Jee Jeon, Sangwoo Park, Soe Hee Ann, Yong-Giun Kim, Yongjik Lee, Woon Jung Kwon, Seong Hoon Choi, Seungbong Han, Gyung-Min Park
- Epidemiol Health. 2024;46:e2024064. Published online July 16, 2024
- DOI: https://doi.org/10.4178/epih.e2024064
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AbstractOBJECTIVES
In this study, we sought to evaluate the association between smoking status and subclinical coronary atherosclerosis, as detected by coronary computed tomography angiography (CCTA), in asymptomatic individuals.METHODSWe retrospectively analyzed 9,285 asymptomatic participants (mean age, 53.7±8.0 years; n=6,017, 64.8% male) with no history of coronary artery disease (CAD) who had undergone self-referred CCTA. Of these participants, 4,333 (46.7%) were considered never smokers, 2,885 (31.1%) former smokers, and 2,067 (22.3%) current smokers. We assessed the degree and characteristics of subclinical coronary atherosclerosis using CCTA, with obstructive CAD defined as a diameter stenosis of at least 50%.RESULTSCompared with never-smokers, former smokers exhibited no significant differences in the probabilities of obstructive CAD, any coronary plaque, calcified plaque, or mixed plaque, as determined using adjusted odds ratios (aORs; p>0.05 for all). However, the risk of non-calcified plaque was significantly higher in former smokers (aOR, 1.34; 95% confidence interval [CI], 1.00 to 1.78; p=0.048). Current smokers had significantly higher rates of obstructive CAD (aOR, 1.46; 95% CI, 1.10 to 1.96; p=0.010), any coronary plaque (aOR, 1.41; 95% CI, 1.20 to 1.65; p<0.001), calcified plaque (aOR, 1.32; 95% CI, 1.13 to 1.55; p=0.001), non-calcified plaque (aOR, 1.72; 95% CI, 1.28 to 2.32; p<0.001), and mixed plaque (aOR, 2.00; 95% CI, 1.39 to 2.86; p<0.001) compared to never smokers.CONCLUSIONSThis cross-sectional study revealed a significant association between current smoking and subclinical coronary atherosclerosis, as detected on CCTA. Additionally, former smoking demonstrated an association with non-calcified plaque, indicating elevated cardiovascular risk. -
SummaryKorean summary
- 현재흡연은 무증상 관상동맥 죽상경화증의 독립적인 예측 인자이다. - 과거흡연은 초기 죽상경화증과 취약성을 반영하는 비석회화 플라크와 관련이 있다. - 무증상 관상동맥 죽상경화증을 예방하기 위해 적절한 금연 전략이 필요하다.Key Message
- Current smoking is an independent predictor of subclinical coronary atherosclerosis. - Former smoking is associated with non-calcified plaque reflecting the early atherosclerosis and vulnerability. - Appropriate strategies for smoking cessation are needed to prevent subclinical coronary atherosclerosis.
- The Changing Pattern of Cigarette Smoking of Students in Junior and Senior High Schools in Korea: 1988-1997.
- Il Suh, Sun Ha Jee, Soh Yoon Kim, Dong Choun Shin, Soh Yeon Ryu, Il Soon Kim
- Korean J Epidemiol. 1998;20(2):257-266.
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AbstractIn order to examine the actual condition of smoking, the change of knowledge and the attitude on smoking of the students attending junior and senior high schools in Korea, the survey was performed six times ranging from 1988 to 1997. The first two years, the survey was performed only for male students. Since 1991, both male and female students were surveyed. The students in junior and senior high school were selected by a random sampling method and surveyed by mail. In this survey, the number of classes of Junior and senior high schools in Korea was a sampling unit, and the classes were selected in proportion to the number of classes of each city and each county. The total number of respondents was 3,437 in 1988, 3,055 in 1989, 6,087 in 1991(2,923 of male, 3,164 of female), 7,067 in 1993(3,162 of male, 3,905 of female), 5,412 in 1995(2,598 of male, 2,814 of female), 4,754 in 1997(2,281 of male, 2,473 of female). The results obtained from the data analysis are as follows; 1.The ratio of smokers among male junior high school students has increased from 1.8% in 1988 to 3.9% in 1997. The ratio of smokers among female junior high school students has increased from 1.2% in 1991 to 3.9% in 1997. The ratio of smokers among male senior high school students has increased from 23.9% in 1988 to 35.3% in 1997. The ratio of smokers among male senior high school students has increased from 23.9% in 1988 to 35.3% 1997. And the ratio of smokers among female senior high school students has increased from 3.0% in 1991 to 8.7% in 1997. Especially the ratio of smokers among female junior high school students is same as that of male in 1997. 2. With respect to areas, the number of current smokers and the experienced ones was higher in the county than in the city in 1988. But in 1997, the number of current smokers and the experienced one is higher in the city than in the county. 3. In respect of whether or not there is a smoker among the member of a family, the odds ratio of smoking among the male senior high school students was 1.70 in 1988 and 1.94 in 1997. the odds ratio of smoking among female senior high school students was 1.43 in 1991 and 1.98 in 1997. This result showed that the effect of family smoking on adolescent smoking has not decreased.
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