Factors Affecting PrEP Adherence

"ATN 123 participants will not be administered Emtricitabine /Tenofovir disoproxil fumarate (Truvada®) as part of the ATN 123 study, but as part of the parent studies, ATN 110 or ATN 113. In order to be eligible for ATN 123, all participants must be co-enrolled in ATN 110 or ATN 113.~The only intervention for ATN 123 is the administration of the Interactive Questionnaire System (iQS), which is a new method to collect data on adherence. It will be utilized to collect adherence data across a variety of devices (i.e., computer/laptop, smartphone, tablet, etc.). Accuracy of this method will be determined; preference for this mode of data collection compared to other methods for adherence reporting used in the parent studies will be assessed."