Table 1.
Characteristics of patients from the two treatment groups.
| Nifedipine+placebo | Nifedipine+VD | |
|---|---|---|
| Characteristics | (n = 304) | (n = 298) |
| Maternal age (year) | 33.2 ± 6.7 | 32.7 ± 5.2 |
| Gestation age at enrollment (week) | 24.3 ± 4.1 | 25.6 ± 3.4 |
| Gestation age at delivery (week) | 36.4 ± 2.1 | 37.1 ± 2.9 |
| Pre-treatment systolic blood pressure (mmHg) | 169.0 ± 11.2 | 171.1 ± 13.4 |
| Pre-treatment diastolic blood pressure (mmHg) | 108.9 ± 12.7 | 110.2 ± 13.1 |
| Pre-treatment heart rate (/min) | 83.8 ± 8.2 | 84.5 ± 9.0 |
| Post-treatment systolic blood pressure (mmHg) | 159.6 ± 10.8 | 143.4 ± 7.6 |
| Post-treatment diastolic blood pressure (mmHg) | 101.9 ± 9.5 | 97.1 ± 9.2 |
| Post-treatment heart rate (/min) | 81.6 ± 9.1 | 80.8 ± 10.6 |
| Body mass index (kg/m2) | 24.1 ± 2.7 | 23.9 ± 3.2 |
Data were shown as mean ± SD.