Table 1 Baseline characteristics in different BP groups
BP of 2006–2007 | Normal BP (N = 19,589) | Elevated BP (N = 5509) | Stage 1 HT (N = 30,198) | Stage 2 HT (N = 41,830) | P-value |
|---|---|---|---|---|---|
Age, years | 45.7 ± 12.6 | 51.1 ± 13.4 | 49.9 ± 12.0 | 55.4 ± 11.5 | <0.001 |
Men, n (%) | 13,035 (66.5) | 4308 (78.2) | 24,412 (80.8) | 35,574 (85.0) | <0.001 |
SBP, mmHg | 107 ± 8.12 | 123 ± 3.80 | 123 ± 8.08 | 148 ± 17.6 | <0.001 |
DBP, mmHg | 69.8 ± 5.82 | 74.1 ± 4.70 | 81.0 ± 3.24 | 92.7 ± 10.3 | <0.001 |
BMI, kg/m2 | 23.5 ± 3.21 | 24.4 ± 3.27 | 24.8 ± 3.31 | 26.0 ± 3.48 | <0.001 |
Income level, n (%) | <0.001 | ||||
<1000 yuan/ month | 17,178 (90.2) | 4854 (91.2) | 27,341 (94.0) | 37,965 (94.7) | |
≥1000 yuan/ month | 1866 (9.8) | 467 (8.8) | 1753 (6.0) | 2129 (5.3) | |
Education, n (%) | <0.001 | ||||
Elementary school | 12,407 (65.1) | 3976 (74.7) | 23,630 (81.2) | 34,704 (86.5) | |
High school or above | 6643 (34.9) | 1348 (25.3) | 5482 (18.8) | 5424 (13.5) | |
Exercise, n (%) | <0.001 | ||||
None | 1864 (9.8) | 472 (8.9) | 2592 (8.9) | 3228 (8.1) | |
Occasionally and Frequently | 17163 (90.2) | 4838 (91.1) | 26,475 (91.1) | 36,787 (91.9) | |
Smoking, n (%) | <0.001 | ||||
Never and past | 12,452 (64.7) | 3201 (59.9) | 19,086 (65.1) | 27,338 (67.6) | |
Current | 6802 (35.3) | 2145 (40.1) | 10243 (34.9) | 13,120 (32.4) | |
Alcohol drinking, n (%) | <0.001 | ||||
Never and past | 11,566 (60.1) | 3076 (57.4) | 18,233 (62.2) | 26,222 (64.8) | |
Current | 7685 (39.9) | 2279 (42.6) | 11101 (37.8) | 14,258 (35.2) | |
Total cholesterol, mmol/L | 4.79 ± 1.01 | 4.93 ± 1.07 | 4.92 ± 1.13 | 5.04 ± 1.22 | <0.001 |
LgCRP | −0.18 ± 0.66 | −0.13 ± 0.65 | −0.16 ± 0.68 | −0.02 ± 0.66 | <0.001 |
Fasting blood glucose, mmol/L | 5.16 ± 1.36 | 5.38 ± 1.62 | 5.39 ± 1.54 | 5.68 ± 1.85 | <0.001 |
Serm uric acid, μmol/L | 277 ± 79.0 | 291 ± 81.5 | 285 ± 80.4 | 298 ± 87.6 | <0.001 |
