Figure 4. Early and long-term dependency, the combination of death or dependency after acute stroke.

The figure shows meta-analysis of early BP lowering on early dependency (A.), early death or dependency (B.), long-term dependency from 3 to 12 months (C.) and long-term death or dependency from 3 to 12 months (D.) after acute stroke. Risk ratios (RR) and their 95% confidence intervals (CI) were estimated event rates of intervention (BP lowering) compared with control (placebo). Overall effects were tested by Z tests and the heterogeneity of between-studies was tested by χ² test and measured as the value of I².