Figure 4. Distribution of between-study variance estimates by method type (including main and subgroup meta-analyses and truncated to 0.5 for better visualisation).
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.