“…Using data from a national survey, Schafer, Blanchard & Fals-Stewart (1994) found that people who used any drug (not including alcohol) at the most recent sexual encounter with a new sexual partner were less likely to use condoms than were non-users. Street youth who used marijuana in a recent sexual encounter were less likely to use condoms, but those who used crack were more likely to use condoms (Bailey, Camlin, and Ennett, 1998). Marijuana use with sex was also associated with decreased condom use at a recent sexual encounter among adolescents in detention (Kingree and Betz, 2003;Kingree, Braithwaite, and Woodring, 2000;Kingree and Phan, 2002) and among MSM (Clutterbuck et al, 2001), but was unrelated to condom use among young heterosexual adults (Brodbeck, Matter, and Moggi, 2006).…”