Figure 1.
Proportion of heroin and illicit prescription opioid use before and after opioid agonist therapy initiation among 1107 people who use illicit drugs in Vancouver, British Columbia, Canada.
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.