Table 4: Analyses of systolic blood pressure.

TrialsWMD (95% CI)P value

LWDHW plus sustained-release nifedipine versus sustained-release nifedipine1−10.00 (−11.76, −8.24)<0.00001
LWDHW plus nifedipine controlled release tablet versus nifedipine controlled release tablet1−10.50 (−24.07, 3.07)0.13
LWDHW plus captopril versus captopril1−9.00 (−13.66, −4.34)0.0002
LWDHW plus nifedipine controlled release tablet versus nifedipine controlled release tablet1−8.00 (−11.35, −4.65)<0.00001
LWDHW plus nifedipine versus nifedipine 1−3.00 (−10.91, 4.91)0.46

Meta-analysis5−9.31 (−10.75, −7.86)<0.00001