Fig. 4.

Forest plot for neurobehavioural outcome (SMD) and 95% confidence intervals (CI) for select subgroups. Shaded area is the 95% CI of the global estimate. Percentage in parentheses is meta-analytic weight. “Unknown” categories are omitted. Right column brackets are 95% CI’s. *p < 0.0031, #p < 0.01 and n.s (not significant) denote between-group differences for the groups covered by the vertical line. Corresponding forest plots for histological and mortality outcomes are in supplement. SMD = standardized mean difference