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J Prev Med Public Health > Volume 41(4); 2008 > Article
Journal of Preventive Medicine and Public Health 2008;41(4): 249-254. doi: https://doi.org/10.3961/jpmph.2008.41.4.249
The Effect of Smoking Status upon Occurrence of Impaired Fasting Glucose or Type 2 Diabetes in Korean Men.
Chang Hae Park, Hyuk Ga, Jong Han Leem, Seung Min Kwak, Hwan Cheol Kim, Ji Ho Choi
1Department of Family Medicine, Inha University College of Medicine, Korea. daumarong@daum.net
2Institute of Geriatric Medicine, Eun-Hye Hospital, Korea.
3Department of Occupational Medicine, Korea.
4Department of Internal Medicine, Inha University College of Medicine, Korea.
OBJECTIVES: To investigate whether smoking and the smoking status are predictors of the incident impaired fasting glucose (IFG) or type 2 diabetes in Korean men. METHODS: A cohort of 1,717 Korean men without IFG or diabetes, who underwent annual periodic health examinations for 4 years (2002-2006), were retrospectively investigated. IFG and diabetes were defined as a serum fasting glucose concentration of 100-125 mg/dL and more than 126 mg/dL, respectively. Cox's proportional hazards model was used to evaluate the association between smoking and development of IFG or type 2 diabetes. RESULTS: A total of 558 cases (32.5%) of incident IFG and 50 cases (2.9%) of diabetes occurred. After controlling for the potential predictors of diabetes, the relative risk for IFG, compared with the never smokers, was 1.02 (95% CI=0.88 to 1.19) for the ever-smokers, 0.96 (95% CI=0.79-1.16) for those who smoked 1-9 cigarettes/d, 1.15 (95% CI=1.01 to 1.30) for those who smoked 10-19 cigarettes/d, and 1.31 (95% CI=1.10 to 1.57) for those who smoked 20 or more cigarettes/d (the P value for the current smokers was only p<0.002). The respective multivariate adjusted relative risks for type 2 diabetes, compared with the neversmokers, were 1.07 (95% CI=0.64 to 1.92), 1.47 (95% CI=0.71 to 3.04), 1.84 (95% CI=0.92-3.04), and 1.87 (95% CI=1.13-3.67), respectively (the P value for the current smokers was only p=0.004). CONCLUSIONS: The smoking status and the number of cigarettes smoked daily are associated with an increased risk for developing IFG or type 2 diabetes in Korean men.
Key words: Smoking; Blood glucose; Type 2 diabetes mellitus
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