Figure 3.
Information on study populations, settings, and interventions helps readers understand whether the findings are applicable to real communities. Photographs pieced by the author.
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.