Condom use during most recent anal intercourse event among a U.S. sample of men who have sex with men.

This study provides a large-scale assessment of condom use during the most recent PAI among MSM in the United States. Findings from this study highlight diversity in condom use behaviors and demonstrate varying degrees of potential risk for human immunodeficiency virus and other sexually transmitted infections. Future prevention efforts should consider contextual components of condom use, including partner type, location of the sexual event, and semen exposure, to more accurately develop individualized risk reduction strategies.