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.
Meta‐analysis of treatment effects on quality of life showing (A) treatment vs usual care and (B) treatments vs. each other. Data marker size is relative to study weight. Large standardized mean difference = 0.8, medium standardized mean difference = 0.5, small standardized mean difference = 0.2. Abbreviations: CI, confidence interval; std diff, standardized difference.
