Reducing sexual health risks and substance use in the prenatal setting: A study protocol for a randomized controlled trial.

Sexually transmitted infections (STIs) are at a record high in the United States, and STI risk is a critical and costly public health concern for childbearing women. STIs can lead to a number of serious health risks including premature birth, low birth weight, ectopic pregnancy, and fetal death. Similarly, there has been a dramatic increase in substance use during pregnancy, leading to complications during pregnancy and poorer birth outcomes. Women who misuse substances are disproportionately more likely to engage in risky sexual behaviors that can result in STIs. The proposed study will test whether the Health Check-Up for Expectant Moms (HCEM), a computer-delivered brief intervention that simultaneously targets STI risk and alcohol/illicit drug use during pregnancy, reduces antenatal and postpartum risk more than an attention, time, and information matched control condition among pregnant women seeking prenatal care. The study is a two-group, randomized controlled trial in which a diverse sample of 250 pregnant women will be recruited from prenatal care clinics and assigned to either (a) a computer-delivered, single-session brief intervention plus two booster sessions); or (b) a computer-delivered control condition. Follow-up assessments will occur at 2 and 6 months from baseline, and at 6 weeks postpartum. Our objective measures include STI incidence and birth outcomes. The results of this trial will fill a critical gap and provide much-needed data on the efficacy, costs, and resource utilization of a practical computer-delivered, brief motivational intervention tailored to reach high-risk women during pregnancy and extending impact to postpartum.