Fig. 2
From: On the utility of the trail making test in migraine with and without aura: a meta-analysis
Left: Summary results of meta-analysis regarding TMT-A performance differences between migraine patients and healthy controls, including Hedges’ g, Confidence Intervals (CI) and relative weight of each study. Right: Forest plot showing the effect size (with confidence interval) of individual studies and, below, the combined effect size with its confidence interval (in black) and its prediction interval (in green)