Maintenance of safer sexual behaviors and predictors of risky sex: the San Francisco Men's Health Study.

This paper describes the sexual behavior changes made by 686 gay and bisexual men in San Francisco between 1984 and 1988, focusing on the individual maintenance of this behavior change over time. There were drastic reductions in insertive and receptive unprotective anal intercourse over time and the vast majority of subjects were able to maintain these changes for at least 12 months prior to the last interview. A total of 12 percent of participants admitted to relapsing to unprotected receptive anal intercourse following initial behavior change; 10 percent reported engaging in unprotected receptive anal sex during every year of the study period. Men were more likely to practice unprotected anal intercourse in 1988 if at baseline they were younger, practiced unprotected anal intercourse, reported more sex partners, did not have a close friend or lover with AIDS, and engaged in fewer other health-related behaviors.