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.
CI: confidence interval, PI: prediction interval, SMD: standardized mean difference, LL: lower limit, UL: upper limit, PSS: perceived stress scale
