Table 2. Clinical characteristics of two case-control studies.
| |
First study |
Second study |
||
|---|---|---|---|---|
| Characteristics | Controls | CHD | Controls | CHD |
| n | 557 | 576 | 502 | 507 |
| Age, y | 62.3±9.3 | 61.0±9.8b | 62.6±8.7 | 60.3±10.6c |
| Men, % | 62.1 | 63.9 | 52.2 | 76.5c |
| BMI, kg/m2 | 23.7±3.2 | 24.4±3.1c | 23.6±3.8 | 24.6±3.3c |
| SBP, mmHg | 131.3±20.8 | 145.9±24.2c | 123.6±17.7 | 134.4±21.6c |
| DBP, mmHg | 78.0±11.1 | 86.2±13.3c | 77.9±10.1 | 80.1±13.7c |
| HDL-C, mmol/L | 1.33±0.36 | 1.03±0.68c | 1.29±0.53 | 1.18±0.37c |
| TC, mmol/L | 4.56±1.70 | 4.54±1.27 | 3.12±1.67 | 4.86±1.16c |
| Hypertension, % | 19.2 | 30.4c | 37.8 | 60.9c |
| Diabetes, % | 3.2 | 18.7c | 7.8 | 16.6c |
| Hyperlipidemia, % | 21 | 35.1c | 30.1 | 40.2c |
| Smokers, % | 37.3 | 46.5c | 26.3 | 57.4c |
n indicates number of individuals; BMI, body mass index; SBP, systolic blood pressure; DBP diastolic blood pressure; HDL-C, high-density lipoprotein cholesterol; TC, total cholesterol; Values are expressed as mean±SD unless otherwise noted; test for differences between cases and controls, bP<0.05, cP<0.01.