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.
Treatment effect on each of 5 P21 measures covaried for the corresponding P7 measure. The y axis indicates the adjusted P21 measure after regressing out the effect of the P7 measure. The α level is adjusted to 0.01 (= 0.05/5), given that there are 5 tests in total. Significant p values, which meet the adjusted α, are colored in red. The standard error is shown as the error bar.
