Younger Gay and Bisexual Men's Condom Use With Main Regular Sexual Partner in New Zealand.

Main partners are a common source of new HIV infections among men who have sex with men (MSM). National behavioral surveillance data (2006-2011) for younger MSM (YMSM, aged 16-29) in New Zealand were analyzed to investigate condom use during anal intercourse with a regular partner (boyfriend/fuckbuddy) by sexual position (insertive/receptive). Backward-stepwise multivariate multinomial logistic regression was used to identify demographic, relational, behavioral, and cognitive factors associated with condom use frequency (high, medium, low). Most YMSM who reported a current regular partner (n=1,221) classified them as a boyfriend (59.5%) versus fuckbuddy (40.5%), though condom use was higher with the latter partner type. Condom use or nonuse was habitual across partners, although insertive sexual position was positively associated with condom use. YMSM who believed condoms reduce sensitivity reported lower condom use. Condoms remain the leading HIV/STI prevention tool for YMSM; efforts to improve condom use must consider sexual position and relationship factors.