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Coronary risk factors and silent ischemic heart disease. The ECCIS Project
F Seccareccia1, A Menotti, P F Fazzini
1Laboratory of Epidemiology and Biostatistics, Istituto Superiore di Sanità, Rome, Italy.
Insights
This study identified key risk factors for silent ischemic heart disease (SIHD) in middle-aged men. Age, blood pressure, smoking, and cholesterol levels were significantly associated with SIHD presence.
Area of Science:
- Cardiology
- Epidemiology
- Preventive Medicine
Background:
- Silent ischemic heart disease (SIHD) is a significant cardiovascular condition.
- Identifying coronary risk factors is crucial for early detection and prevention.
Purpose of the Study:
- To investigate the association between common coronary risk factors and the presence of asymptomatic silent ischemic heart disease (SIHD).
- To analyze risk factor trends across different probability levels of SIHD.
Main Methods:
- Epidemiological study of 5163 men aged 40-59.
- Three-stage diagnostic procedure to classify SIHD probability (low, high, definite).
- Multiple logistic regression models to assess risk factor associations.
Main Results:
- A clear increasing trend in coronary risk factors was observed with higher SIHD probability.
- Age, systolic blood pressure, cigarette smoking, and non-HDL serum cholesterol were significantly associated with SIHD.
- No significant difference in risk factors between highly probable and definite SIHD cases due to small sample size.
Conclusions:
- Age, systolic blood pressure, smoking, and non-HDL cholesterol are key predictors of SIHD.
- These findings support targeted screening and risk factor modification for SIHD prevention.
Abstract:
An epidemiological study was conducted on 5163 men aged 40-59 years, made by occupational samples, from Florence and Rome to identify, by a three-stage procedure, subjects with asymptomatic silent ischemic heart disease (SIHD). This report describes some coronary risk factors. Men who are free from heart disease were compared with: (1) those having a low probability of SIHD (ECG signs only; n = 439); (2) those having a high probability of SIHD (ECG signs plus echographic signs, or positive markers of deficient perfusion, or altered radionuclide ventriculography; n = 104); (3) those having a definite SIHD (signs of the first two groups plus evidence from coronary angiography; n = 25). A clearcut increasing trend in the levels of major coronary risk factors, and in the multivariate estimated coronary risk for major events was found. The difference was not significant between highly probabile and definite cases of SIHD, due to the small numbers involved. Three multiple logistic models, with the three probability levels of silent ischemia as end-points, showed that four of 10 tested factors were associated with the presence of SIHD: age, systolic blood pressure, cigarette smoking and non-HDL serum cholesterol.