Table 1.
Comparison of baseline characteristics among participants with normal BP and pre-hypertension
| Characteristics | Normal BP (n=1,364) | Pre-hypertension (n=1,577) | Total (n=2,941) | p-value |
|---|---|---|---|---|
| Age (mean±SD, yr) | 49.0±5.7 | 50.1±6.1 | 49.6±5.9 | <0.001 |
| BMI (mean±SD, kg/m2) | 26.7±4.7 | 28.1±4.7 | 27.4±4.7 | <0.001 |
| Years of education (mean±SD, yr) | 7.5±4.5 | 7.6±4.6 | 7.6±4.6 | 0.73 |
| SBP (mean±SD, mmHg) | 109.8±7.4 | 126.8±6.6 | 118.9±11.0 | <0.001 |
| DBP (mean±SD, mmHg) | 69.4±6.5 | 79.3±6.3 | 74.7±8.1 | <0.001 |
| Sex | ||||
| Male | 507 (37.2) | 751 (47.6) | 1,258 (42.8) | <0.001 |
| Female | 857 (62.8) | 826 (52.4) | 1,683 (57.2) | |
| BMI | ||||
| Normal | 507 (7.2) | 395 (25.1) | 902 (30.7) | <0.001 |
| Overweight | 545 (40.0) | 683 (43.3) | 1,228 (41.8) | |
| Obese | 312 (22.9) | 499 (31.6) | 811 (27.6) | |
| Tobacco smoking | 205 (15.0) | 197 (12.5) | 402 (13.7) | 0.05 |
| Economic status | ||||
| High | 643 (47.2) | 748 (47.5) | 1,391 (47.4) | 0.97 |
| Medium | 378 (27.7) | 437 (27.8) | 815 (27.8) | |
| Low | 342 (25.1) | 389 (24.7) | 731 (24.8) |
Values are presented as number (%).
BP, blood pressure, SD, standard deviation; BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure.