Characteristics of study participants (N=92 815）
| Variable | N | Percentage (%) | SBP Median (IQR)/mean±SD | DBP Median (IQR) |
| Overall | 92 815 | 100 | 110 (102–120) | 70 (64–80) |
| Gender | ||||
| Female | 89 138 | 96.04 | 110 (101–120) | 70 (63–80) |
| Male | 3677 | 3.96 | 123 (120–130) | 80 (75–85) |
| Age (years)* | ||||
| 18–25 | 17 289 | 18.63 | 110 (102–120) | 70 (63–78) |
| 26–35 | 53 799 | 57.96 | 110 (100–120) | 70 (62–78) |
| 36–45 | 14 989 | 16.15 | 110 (105–120) | 70 (65–80) |
| 46–55 | 6376 | 6.87 | 120 (110–130) | 80 (70–85) |
| 56–65 | 250 | 0.27 | 130 (120–135) | 80 (75–86) |
| Missing data | 112 | 0.12 | – | – |
| BMI (kg/m2)*† | ||||
| Underweight | 7037 | 7.58 | 106 (99–110) | 68 (60–70) |
| Normal | 57 077 | 61.50 | 110 (100–120) | 70 (61–77) |
| Overweight | 22 235 | 23.96 | 118 (110–123) | 72 (70–80) |
| Obese | 6253 | 6.74 | 120 (110–130) | 79 (70–80) |
| Missing data | 213 | 0.23 | – | – |
| Years of hyperlipidaemia* | ||||
| 0 | 86 900 | 93.63 | 110 (101–120) | 70 (63–80) |
| ~5 | 4837 | 5.21 | 120 (110–130) | 80 (70–85) |
| ~10 | 636 | 0.69 | 125 (110–140) | 80 (70–90) |
| >10 | 127 | 0.14 | 128 (120–140) | 82 (76–90) |
| Missing data | 315 | 0.34 | – | – |
| Years of diabetes* | ||||
| 0 | 91 886 | 99.00 | 110 (102–120) | 70 (64–80) |
| ~5 | 625 | 0.67 | 123 (110–138) | 80 (70–90) |
| ~10 | 164 | 0.18 | 120 (110–130) | 80 (70–90) |
| >10 | 56 | 0.06 | 130±18 | 80 (75–90) |
| Missing data | 84 | 0.09 | – | – |
| Smoking | ||||
| Never | 91 020 | 98.07 | 110 (102-120) | 70 (64-80) |
| <10 cigarettes/day | 1280 | 1.38 | 110 (105–120) | 70 (66–80) |
| 10–20 cigarettes/day | 419 | 0.45 | 110 (105–120) | 70 (68–80) |
| >20 cigarettes/day | 96 | 0.10 | 110 (103–120) | 70 (70–80) |
| Alcohol drinking | ||||
| Never | 45 984 | 49.54 | 110 (102–120) | 70 (64–80) |
| Occasionally | 46 263 | 49.84 | 110 (102–120) | 70 (64–80) |
| Often | 568 | 0.61 | 110 (102–120) | 70 (69–80) |
| Family history of hypertension | ||||
| Yes | 44 451 | 47.89 | 110 (102–120) | 70 (64–80) |
| No | 48 364 | 52.11 | 110 (102–120) | 70 (64–80) |
*With the missing data.
†BMI was used to classify participants into categories of underweight (<18.5), normal weight (18.5 to <24), overweight (24 to <28) and obese (≥28).
BMI, body mass index; DBP, diastolic blood pressure; SBP, systolic blood pressure.