Table 1 Baseline characteristics of the Beijing steel workers cohort
Variables | Entire cohort (N = 4986) | means ± SD | Cohort used in this study (N = 4238) | means ± SD |
|---|---|---|---|---|
Age (yr) | 4975 | 45.08 ± 7.82 | 4238 | 44.91 ± 7.93 |
TC (mg/dl) | 4521 | 186.25 ± 38.65 | 4238 | 187.58 ± 37.87 |
BMI (kg/m2) | 4782 | 23.18 ± 2.72 | 4238 | 23.17 ± 2.71 |
SBP (mmHg) | 4976 | 123.26 ± 18.86 | 4238 | 122.89 ± 18.67 |
DBP (mmHg) | 4976 | 80.91 ± 11.89 | 4238 | 80.80 ± 11.83 |
PP (mmHg) | 4976 | 42.34 ± 11.78 | 4238 | 42.09 ± 11.77 |
MAP (mmHg) | 4976 | 95.03 ± 13.49 | 4238 | 94.83 ± 13.37 |
Hypertension (%) | 4976 | 32.13 | 4238 | 31.69 |
Cigarette smoker (%) | 4932 | 73.44 | 4238 | 73.36 |