Studies included in the meta-analysis.

#Publications with missing data in these columns did only report outcome on subscales of the SCL or the IIP.
*The risk of bias rating is based on the assessment of study quality across 19 relevant quality criteria (with ratings of 0 = not fulfilled to 2 = fulfilled). A low study quality (M = 0.00–0.49) indicates a high risk of bias, whereas a medium study quality (M = 0.50–1.49) indicates a medium and a high study quality (M = 1.50–2.00) indicates a low risk of bias.