Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The size of the grey box reflects how much weight each study received in the meta-analysis (i.e., the larger the box, the more this study contributed to the pooled effect represented by the blue diamond). Black bars represent the 95% CI for the effect size in each study. CI, confidence interval; PTSD, posttraumatic stress disorder; SMD, standardised mean difference.
