Heterosexual Identification and Same-Sex Partnering: Prevalence and Attitudinal Characteristics in the USA.

This paper used the 2011-2017 National Survey of Family Growth to estimate population sizes and attitudinal characteristics of heterosexual-identified men who have sex with men (MSM) and women who have sex with women (WSW) aged 15-44 years. Analyses estimated population sizes in stages: after excluding respondents who reported only one lifetime same-sex partner, which happened before the age of 15; after excluding males who reported nonconsensual male-male sex; after excluding respondents who reported only one lifetime same-sex partner, regardless of the age at which that experience occurred; after excluding respondents who reported only two lifetime same-sex partners, the first of which occurred before age 15; and after excluding males who reported male-male sex work. The broadest criteria included many individuals with limited same-sex sexual histories or those who experienced nonconsensual sex or potentially coerced sex in youth. After excluding those respondents, analyses showed that heterosexual-identified MSM and WSW had a diversity of attitudes about gender and LGB rights; only a distinct minority were overtly homophobic and conservative. Researchers should carefully consider whether to include respondents who report unwanted sexual contact or sex at very young ages when they analyze sexual identity-behavior discordance or define sexual minority populations on the basis of behavior.