Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
ISSN-L : 0918-2918
Risk Factors and the Incidence of Coronary Artery Disease in Young Middleaged Japanese Men: Results from a 10Year Cohort Study
Hiroki SatohTetsuo NishinoKazuo TomitaYasuaki SaijoReiko KishiHiroyuki Tsutsui
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2006 Volume 45 Issue 5 Pages 235-239


Objective: The objective of this study was to elucidate the relationship between risk factors and the coronary artery disease (CAD) in young middleaged Japanese men.
Methods: A cohort study of 2,764 young middleaged Japanese men aged 3544 (mean±SD: 42.3±2.5) years based on a 10year followup to identify the risk factors for the occurrence of CAD was conducted. There were 35 cases of CAD during the follow up; 25 myocardial infarctions and 10 angina pectoris. The Cox Proportional hazard model was used to identify the independent risk factors for CAD. Adjustment was made for variables including age, body mass index, smoking habit, systolic blood pressure, total cholesterol (TC), highdensity lipoprotein cholesterol (HDLC), fasting plasma glucose (FPG), and triglyceride.
Results: TC, low HDLC, and FPG were identified as significant independent risk factors for CAD. Adjusted hazard ratio (HR) of a high level of TC≥220 (mg/dl) for CAD was 5.46 (95% confidence interval (CI): 1.9617.51) and that of a high level of HDLC<50(mg/dl) was 9.01 (95%CI: 1.1372.17), and a high level of FPG≥110 (mg/dl) was 2.94 (95%CI: 1.228.23). Considering the combination of these risk factors, adjusted HR for CAD of the subjects who had 2 risk factors was 8.37 (95%CI: 2.2131.65).
Conclusions: Using the database of young middleaged Japanese men, TC, low HDLC, and FPG were found to be important risk factors for CAD, and the combination of these risk factors was associated with CAD.

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© 2006 by The Japanese Society of Internal Medicine
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