Characteristics of the subjects
| All subjects | Male | Female | T/χ2 | P value | |
| N | 772 | 610 | 162 | ||
| Age (years) | 18.65±0.60 | 18.66±0.60 | 18.58±0.58 | 1.556 | 0.120 |
| High (cm) | 171.81±8.00 | 174.20±6.79 | 162.82±5.42 | 22.437 | <0.001 |
| Body weight (kg) | 64.64±12.91 | 67.29±12.63 | 54.68±8.25 | 125.261 | <0.001 |
| BMI (kg/m2) | 21.83±3.54 | 22.13±3.66 | 20.61±2.74 | 5.806 | <0.001 |
| SBP (mm Hg) | 116.85±11.00 | 118.86±10.65 | 109.10±8.62 | 11.049 | <0.001 |
| DBP (mm Hg) | 68.02±7.05 | 68.16±7.18 | 67.49±6.53 | 0.966 | 0.335 |
| Heart rate (bmp) | 82.88±12.70 | 81.38±12.19 | 88.48±13.05 | 5.567 | <0.001 |
| Smoking | 10 (1.30%) | 8 (1.31%) | 2 (1.23%) | 0.007 | 0.934 |
| Alcohol drinking | 96 (12.44%) | 90 (14.75%) | 6 (3.70%) | 14.486 | <0.001 |
BMI, body mass index; DBP, diastolic blood pressure; SBP, systolic blood pressure.