Fig. 3: Forest plot of studies applied machine learning in posttraumatic stress disorder.

Rate means the effect size in the meta-analysis, which is accuracy. 95% CI means 95% credible interval. Weight of a study is calculated by weight = 1/(se2 + t2). In this formula, “se” is the standard error of its accuracy, and “t” is a variable responding the level of the study based on the Q test and its effect size (i.e., accuracy).