Table 2.
Characteristics of the study sample
| Variable | Male (n 3866) | Female (n 5924) | P-value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | n | % | sd | Mean | n | % | sd | ||
| Age (years) | 60·5 | 10·2 | 58·7 | 9·9 | <0·001 | ||||
| BMI (kg/m2) | 24·2 | 3·6 | 25·1 | 3·8 | <0·001 | ||||
| WC (cm) | 83·4 | 10·2 | 83·0 | 10·1 | 0·098 | ||||
| SBP (mmHg) | 144·3 | 21·8 | 144·6 | 24·2 | 0·446 | ||||
| DBP (mmHg) | 87·6 | 11·6 | 85·5 | 11·8 | <0·001 | ||||
| TAG (mmol/l) | 1·6 | 1·5 | 1·7 | 1·5 | <0·001 | ||||
| HDL-cholesterol (mmol/l) | 1·9 | 0·7 | 2·0 | 0·8 | <0·001 | ||||
| FBG (mmol/l) | 6·1 | 1·7 | 6·1 | 1·9 | 0·380 | ||||
| Level of education | |||||||||
| Primary school or below | 1855 | 48·0 | 3836 | 64·8 | <0·001 | ||||
| Middle school | 1514 | 39·2 | 1695 | 28·6 | |||||
| High school or above | 497 | 12·8 | 393 | 6·6 | |||||
| Annual income (CNY/year) | |||||||||
| ≤5000 | 1438 | 37·2 | 2612 | 44·1 | <0·001 | ||||
| 5001–10 000 | 874 | 22·6 | 1265 | 21·3 | |||||
| 10 001–20 000 | 740 | 19·1 | 1113 | 18·8 | |||||
| >20 000 | 814 | 21·1 | 934 | 15·8 | |||||
| Marital status | |||||||||
| Married | 3406 | 88·1 | 5214 | 88·0 | <0·001 | ||||
| Unmarried | 126 | 3·3 | 4 | 0·1 | |||||
| Divorced, widowed, other | 334 | 8·6 | 706 | 11·9 | |||||
| Smoking status | |||||||||
| Never smoked | 1022 | 26·4 | 5393 | 91·0 | <0·001 | ||||
| Former smoker | 659 | 17·1 | 108 | 1·8 | |||||
| Current smoker | 2185 | 56·5 | 423 | 7·2 | |||||
| Drinking status | |||||||||
| Never drank | 1473 | 38·1 | 5296 | 89·4 | <0·001 | ||||
| Moderate drinker | 1295 | 33·5 | 557 | 9·4 | |||||
| Heavy drinker | 951 | 24·6 | 44 | 0·7 | |||||
| Former drinker | 147 | 3·8 | 27 | 0·5 | |||||
| Exercise regularly | 3372 | 87·2 | 5005 | 84·5 | <0·001 | ||||
| Peasantry | 3313 | 80·5 | 4944 | 83·5 | <0·001 | ||||
WC, waist circumference; SBP, systolic blood pressure; DBP, diastolic blood pressure; FBG, fasting blood glucose.
Data are presented as mean (sd) or n (%), as appropriate