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.
Hat values of trials included within the meta‐analysis (a measure of influence on the meta‐analysis model plotted against standardized residuals). Outlying trials are labelled. Note the points correspond to trial‐level influence, not study‐level influence
