Fig. 2.

Forest plot for the grey matter volume meta-analysis. Overview of all studies included in the grey matter volume meta-analysis. The square indicates the effect size in mL of each study (i.e. the difference in mL volume between males and females) and the bars indicate the 95% confidence interval of each study. The studies corresponding to the effect size can be found on the left. Study IDs correspond to the study IDs in Table 1. The diamond at the bottom of the figure indicates the meta-analytic effect size and its variance.