Table 1.

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.