An official website of the United States government
Here's how you know
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.
Observed prevalence of alcohol use disorder as a function of IQ scores, as measured in standard deviation units, in males assessed at ages 18–20. Only onsets after IQ testing are included.