Associations Between Relationship Power and Pre-Exposure Prophylaxis (PrEP) Use Among Men Who Have Sex With Men.

Few studies have attempted to understand relationship-level factors impacting PrEP utilization among men who have sex with men (MSM). This study examined associations between relationship power and PrEP use among 826 MSM participating in a cross-sectional, Internet-based survey. The results of our analysis indicate that decision-making dominance was positively associated with PrEP use among MSM, but the association between relationship control/overall relationship power and PrEP use was inconclusive. Furthermore, when examining specific types of decision-making dominance, equal and greater dominance compared to one's partner regarding types of sexual activity engaged in, as well as dominance more generally, were positively associated with PrEP use. However, the relationships between decision-making dominance related to condom use/sexual initiation and PrEP use were inconclusive. This study suggests that the promotion of egalitarian relationships-as well as other relationship-level determinants-should be an essential component of biobehavioral interventions targeting this population.