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.
Square sizes represent the weight of the SE of the effect size. Higher precision studies (ie, a smaller SE) contribute to larger weights, and thus larger squares, than lower precision studies.
