Table 3: Analyses of blood pressure.

TrialsIntervention (n/N)Control (n/N)RR (95% CI) value

LWDHW plus sustained-release nifedipine versus sustained-release nifedipine190/9352/615.19 (1.35, 20.04)0.02
LWDHW plus captopril versus captopril145/4943/481.31 (0.33, 5.20)0.70
LWDHW plus enalapril versus enalapril135/4223/362.83 (0.98, 8.15)0.05

Meta-analysis3170/184118/1452.77 (1.37, 5.57)0.004