Table 1 Characteristics of study population by gender
|  | Total (n = 9969) | Male (n = 4101) | Female (n = 5868) | P value |
|---|---|---|---|---|
Age (year) | 53.34(12.99) | 54.05(13.09) | 52.85(12.90) | < 0.001 |
BMI (kg/m2) | 24.53(3.52) | 24.86(3.35) | 24.30(3.62) | < 0.001 |
Living area, % |  |  |  | > 0.05 |
Rural | 58.4 | 59.1 | 57.8 | Â |
Urban | 41.6 | 40.9 | 42.2 | Â |
Educational level, % |  |  |  | < 0.001 |
High school or above | 20.6 | 25.8 | 16.9 | Â |
Middle school | 44.1 | 47.1 | 42 | Â |
Primary school or below | 35.3 | 27.1 | 41.1 | Â |
Marital status, % |  |  |  | > 0.05 |
Married/co-habiting | 93.8 | 93.9 | 93.8 | Â |
Single/divorced/widowed | 6.2 | 6.1 | 6.2 | Â |
Occupational position, % |  |  |  | < 0.001 |
Manual | 52.7 | 49.1 | 55.2 | Â |
Non-manual | 34.8 | 35.5 | 34.2 | Â |
Self-employed | 12.6 | 15.4 | 10.6 | Â |
Current smoking status, % | 21.2 | 48.2 | 2.3 | < 0.001 |
Current drinking status, % | 54.1 | 68.1 | 44.3 | < 0.001 |
History of hypertension, % | 26.1 | 28.7 | 24.3 | < 0.001 |
History of DM, % | 7.3 | 7.6 | 7.1 | > 0.05 |
History of CVD, % | 5.7 | 5.3 | 6.1 | > 0.05 |
Metabolic syndrome, % (unstandardized) | 30.8 | 28.5 | 32.3 | < 0.001 |
Metabolic syndrome, % (standardized) | 22.0 | 21.9 | 22.0 | > 0.05 |