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Table 1 Baseline characteristics of the Beijing steel workers cohort

From: Classical risk factors of cardiovascular disease among Chinese male steel workers: a prospective cohort study for 20 years

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