Multiple linear regression models of primary outcomes of mean change in systolic or diastolic blood pressure (SBP/DBP) from antihypertensive administration to first subsequent blood pressure measurement, adjusted
| Outcome | Predictor | Mean (95% CI) | P value |
| SBP change (mm Hg) | Antihypertensive used | 0.419 | |
| Hydralazine versus labetalol | 4.50 (−4.46 to 13.46) | 0.324 | |
| Hydralazine versus nicardipine | 5.71 (−2.97 to 14.39) | 0.197 | |
| Labetalol versus nicardipine | 1.21 (−3.32 to 5.78) | 0.601 | |
| DBP change (mm Hg) | Antihypertensive used | 0.003 | |
| Hydralazine versus labetalol | −3.41 (−9.54 to 2.72) | 0.275 | |
| Hydralazine versus nicardipine | 2.06 (−3.88 to 8.00) | 0.496 | |
| Labetalol versus nicardipine | 5.47 (2.37 to 8.57) | <0.001 |
P value, significance set to <0.05.