Drug Use Disorders

This intervention will focus on stimulant-using men at high risk for HIV who are in need of tailored behavioral interventions to mitigate co-occurring stimulant use and HIV risk in the era of pre-exposure prophylaxis (PrEP). The study is a pilot randomized controlled trial to evaluate the adaptation, feasibility, acceptability, and preliminary efficacy of a behavioral intervention.

This study builds upon an ongoing NIH-funded randomized controlled trial (R01DA053325) evaluating a Partner Navigation Intervention to increase hepatitis C virus (HCV) treatment initiation among young adult people who inject drugs (PWID) and their injecting partners in San Francisco. The proposed research includes secondary analyses of existing trial data, additional survey measures, qualitative interviews, and a pilot intervention adaptation. The study has two primary objectives. First, it examines how racialized discrimination (structural, interpersonal, and internalized) affects HCV treatment initiation and dyadic partner support processes within injecting partnerships. Second, it evaluates whether a brief, adapted "booster" partner navigation session delivered at HCV treatment completion can improve engagement in ongoing healthcare. Participants include adults (≥18 years) who inject drugs and have been diagnosed with HCV, along with their primary injecting partners. Study activities include longitudinal surveys, qualitative interviews with a subset of participants, and a pilot intervention session with follow-up evaluation. This research addresses critical gaps in understanding how social relationships and structural inequities influence healthcare engagement among PWID. Findings will inform culturally responsive adaptations to dyadic interventions and improve continuity of care in a population disproportionately affected by HCV and systemic barriers to healthcare.

The proposed project seeks to achieve three objectives that will, collectively, evaluate the effectiveness of a one-year version of the Parent-Child Assistance Program (PCAP-1) -a model for a home visitation and case management program for parents who used substances. First, the proposed project aims to estimate the causal impact of PCAP-1 on preventing the need for foster care and promoting reunification. Second, the project will estimate PCAP-1's effectiveness in achieving other program goals: parent recovery, parent's connection with needed comprehensive community resources, and preventing future children from being exposed to drugs and alcohol. Finally, causal evidence of program effectiveness across the prior two objectives would enable PCAP-1 to be rated according to strength of evidence on relevant federal registries (i.e., FFPSA and HOMEVEE). All objectives will be pursued with substantial backing from public and private partners, including the Oklahoma Department of Human Services (OK's Title IV-E agency). This quasi-experimental project will recruit 40 new participants to receive one year of PCAP-1 services. It will use administrative data on participants from the Oklahoma Department of Human Services for the control group. Given that the population PCAP serves are disproportionately poor and low-income and PCAP is designed to be culturally competent and relevant, PCAP-1 harbors the potential to address inequities in child welfare outcomes, substance use disorder treatment services, and child and family well- being by improving outcomes for these families. With a strong backing by state agencies and community partners, the evaluation of PCAP-1 will contribute to a knowledge gap in the field for in-home program models serving a highly vulnerable population with high rates of child welfare involvement and use of foster care.

The Parent-Child Assistance Program (PCAP) helps mothers who have used alcohol, opioids, or other drugs during pregnancy and their children through the work of highly trained, closely supervised case managers. Case managers work closely with mothers over the course of three years, meeting the mothers in their own homes when possible, to help them to set goals and take advantage of available resources. The primary aims of PCAP include: (1) assisting mothers in obtaining substance use disorder (SUD) treatment and staying in recovery, (2) linking mothers to community resources that will help them build and maintain healthy, independent family lives for themselves and their children, and (3) preventing future drug and alcohol use during pregnancy. This study brings PCAP to Oklahoma (the state with the highest incarceration rate for women, where most enter the criminal justice system for drug charges) for the first time. This five-year project includes 200 women who will enroll in the study and be randomly assigned to the treatment (100 women) or control group (100 women). The intervention (i.e., PCAP services) will take place over a three-year period at two sites: Oklahoma City, Oklahoma and Tulsa, Oklahoma. This evaluation will measure participants' substance use, substance use disorder (SUD) treatment outcomes, and a host of other well-being outcomes-including but not limited to subsequent substance-exposed births, use of public assistance, education, use of family planning methods, and employment-to evaluate the effects of PCAP services. Among these, the investigators have identified four key outcomes: (1) the mother is on a reliable method of birth control, (2) abstinence for six months, (3) child custody (i.e., placement of children in foster care and/or with kinship providers), and (4) criminal justice involvement.