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.
For the sake of interpretation, groups were created for both duration and quality and used in regression with all covariates. Earlier alcohol use was noted in groups with lower sleep duration (1a) and worse sleep quality (1b). Likewise, earlier cannabis use was noted in groups with lower sleep duration (1c) and worse sleep quality (1d).
