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.
Plot of the maximum absolute standardized mean difference (ASMD) of covariates. Points on the left (‘Unweighted’) represent maximum ASMD (across the three treatment groups) prior to weighting and are connected by lines to the corresponding value of the same covariate's maximum ASMD following weighting on the right (‘Weighted’). Values less than 0.2 indicate adequate balance between treatment and control groups.
