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.
Characteristics of imprisoned injecting drug users before and after start of the syringe exchange programme in prison
Injection drug use in previous 6 months (outside or inside prisons).
Referring to individuals (denominator) who injected drugs during previous 4-month periods of imprisonment (baseline investigation) or during 4-month follow-up periods.
