Structural and Partnership Factors Affecting Adherence to Pre-Exposure Prophylaxis (PrEP) Among Young Men Who Have Sex With Men

A longitudinal pilot sub-study of ATN 110 and ATN 113 assessing how structural (physical settings) and partnership factors affect adherence of young men who have sex with men to Pre-Exposure Prophylaxis (PrEP). The study compared levels of adherence reported in the Interactive Questionnaire System (iQS) to those collected in ATN 110 or ATN 113 by ACASI, Wisepill, and drug concentration levels in blood and hair. The iQS was administered at study entry (ATN 110 or ATN 113 week 24) and week 24 (ATN 110 or ATN 113 week 48) visits.