Texting Intervention to Sustain HIV Prevention in Women in High-drug-use Contexts

Participants receive personalized text messages twice a day, five days per week. Messages are designed to encourage women to maintain positive behavioral changes they have made in response to the baseline safer-sex training that is delivered to all participants regardless of intervention assignment. Message content is based upon theoretical constructs of behavior-change maintenance as articulated by Voils et al. (Health Education \& Behavior, 2013). Personalization elements include participant's name, times of day when she prefers to receive messages, and specific motivators of behavior change she expressed in the baseline interview.

Participants receive generic health-promotion text messages twice a day, five days per week.