FIGURE 5.

Subgroup analysis for all included studies of acute lung injury that reported the secondary outcome of alveolar capillary permeability. Each row represents pooled estimate data from studies within that subgroup. Data is presented as a forest plot with standardized mean difference and 95% confidence intervals. I² value represents the statistical heterogeneity within each subgroup. Effect sizes < 0 favours EV treatment and > 0 favours control. The ‘Overall Efficacy’ is a pooled estimate effect of MSC‐EVs on lung vascular permeability from all studies of acute lung injury combined