Table 1.
Baseline characteristics by incident case status
| Characteristicsa | CRS | CHD casesb | Stroke casesc |
|---|---|---|---|
| N | 1065 | 1085 | 300 |
| Sex (%male) | 41.4 | 67.4 | 53.0 |
| Race (%African-American) | 27.2 | 23.4 | 45.0 |
| Age (years) | 53.8 ± 0.10 | 55.8 ± 0.17 | 56.7 ± 0.32 |
| Current smoker (%yes) | 24.8 | 36.1 | 36.8 |
| Pack-years ≥ 20 (%yes) | 29.0 | 48.6 | 41.4 |
| Diabetes (%) | 11.1 | 25.1 | 34.6 |
| Hypertension (%) | 29.8 | 49.4 | 66.0 |
| SBP (mmHg) | 120.4 ± 0.58 | 128.3 ± 0.63 | 134.8 ± 1.30 |
| DBP (mmHg) | 73.3 ± 0.37 | 76.2 ± 0.38 | 79.4 ± 0.81 |
| BMI (kg/m2) | 27.7 ± 0.20 | 28.3 ± 0.15 | 29.0 ± 0.31 |
| HDL cholesterol (mmol/l) | 1.38 ± 0.02 | 1.12 ± 0.01 | 1.25 ± 0.02 |
| LDL cholesterol (mmol/l) | 3.46 ± 0.03 | 3.92 ± 0.03 | 3.75 ± 0.07 |
| Total cholesterol (mmol/l) | 5.48 ± 0.03 | 5.86 ± 0.03 | 5.76 ± 0.08 |
| Triglycerides (mmol/l) | 1.41 ± 0.03 | 1.87 ± 0.04 | 1.73 ± 0.07 |
CRS, cohort random sample; Pack-years, (cigarettes smoked per day/20) × (years smoked); SBP, systolic blood pressure; DBP, diastolic blood pressure; BMI, body mass index; HDL, high-density lipoprotein; LDL, low-density lipoprotein; CHD, coronary heart disease.
a
Characteristics weighted according to the sampling fraction. Data presented as mean ± standard error of the mean.
b
P < 0.05 for comparison of CHD cases to 980 non-cases in the CRS for all characteristics.
c
P < 0.05 for comparison of stroke cases to 1036 non-cases in the CRS for all characteristics.