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.
Composite use of alcohol, marijuana and other drugs across a decade after adolescent treatment. Units are in days per month for each type of substance (e.g., days beer + days wine+ days hard liquor, 8 types of drugs), leading to frequencies greater than 30, as more than one type of alcohol or drug could be consumed in a given day.
