A factorial experiment grounded in the multiphase optimization strategy to promote viral suppression among people who inject drugs on the Texas-Mexico border: a study protocol.

BACKGROUND: People who inject drugs living with HIV (PWIDLH) suffer the lowest rates of HIV viral suppression due to episodic injection drug use and poor mental health coupled with poor retention in HIV care. Approximately 44% of PWIDLH along the US-Mexico border are retained in care and only 24% are virally suppressed. This underserved region faces a potential explosion of transmission of HIV due to highly prevalent injection drug use. This protocol describes an optimization trial to promote sustained viral suppression among Spanish-speaking Latinx PWIDLH. METHODS: The multiphase optimization strategy (MOST) is an engineering-inspired framework for designing and building optimized interventions and guides this intervention. The primary aim is to conduct a 24 factorial experiment in which participants are randomized to one of 16 intervention conditions, with each condition comprising a different combination of four behavioral intervention components. The components are peer support for methadone uptake and persistence; behavioral activation therapy for depression; Life-Steps medication adherence counseling; and patient navigation for HIV care. Participants will complete a baseline survey, undergo intervention, and then return for 3-,6-,9-, and 12-month follow-up assessments. The primary outcome is sustained viral suppression, defined as viral loads of < 40 copies per mL at 6-,9-, and 12-month follow-up assessments. Results will yield effect sizes for each component and each additive and interactive combination of components. The research team and partners will make decisions about what constitutes the optimized multi-component intervention by judging the observed effect sizes, interactions, and statistical significance against real-world implementation constraints. The secondary aims are to test mediators and moderators of the component-to-outcome relationship at the 6-month follow-up assessment. DISCUSSION: We are testing well-studied and available intervention components to support PWIDLH to reduce drug use and improve their mental health and engagement in HIV care. The intervention design will allow for a better understanding of how these components work in combination and can be optimized for the setting. TRIAL REGISTRATION: This project was registered at clinicaltrials.gov (NCT05377463) on May 17th, 2022.

The role of drug treatment and recovery services: an opportunity to address injection initiation assistance in Tijuana, Mexico.

BACKGROUND: In the U.S. and Canada, people who inject drugs' (PWID) enrollment in medication-assisted treatment (MAT) has been associated with a reduced likelihood that they will assist others in injection initiation events. We aimed to qualitatively explore PWID's experiences with MAT and other drug treatment and related recovery services in Tijuana Mexico, a resource-limited setting disproportionately impacted by injection drug use. METHODS: PReventing Injecting by Modifying Existing Responses (PRIMER) seeks to assess socio-structural factors associated with PWID provision of injection initiation assistance. This analysis drew on qualitative data from Proyecto El Cuete (ECIV), a Tijuana-based PRIMER-linked cohort study. In-depth qualitative interviews were conducted with a subset of study participants to further explore experiences with MAT and other drug treatment services. Qualitative thematic analyses examined experiences with these services, including MAT enrollment, and related experiences with injection initiation assistance provision. RESULTS: At PRIMER baseline, 607(81.1%) out of 748 participants reported recent daily IDU, 41(5.5%) reported recent injection initiation assistance, 92(12.3%) reported any recent drug treatment or recovery service access, and 21(2.8%) reported recent MAT enrollment (i.e., methadone). Qualitative analysis (n = 21; female = 8) revealed that, overall, abstinence-based recovery services did not meet participants' recovery goals, with substance use-related social connections in these contexts potentially shaping injection initiation assistance. Themes also highlighted individual-level (i.e., ambivalence and MAT-related stigma) and structural-level (i.e., cost and availability) barriers to MAT enrollment. CONCLUSION: Tijuana's abstinence-based drug treatment and recovery services were viewed as unable to meet participants' recovery-related goals, which could be limiting the potential benefits of these services. Drug treatment and recovery services, including MAT, need to be modified to improve accessibility and benefits, like preventing transitions into drug injecting, for PWID.

Impact of Office-based Opioid Treatment on Emergency Visits and Hospitalization in Adolescents with Opioid Use Disorder.

OBJECTIVE: To determine if engagement in office-based opioid treatment decreases emergency department, urgent care visits, and hospitalizations for acute opioid-related events (OREs) among adolescents with opioid use disorder. STUDY DESIGN: This retrospective cohort study identified all emergent and outpatient visits among adolescents, age 10-19 years, referred for office-based opioid treatment between January 1, 2006 and December 31, 2016. Patients were dichotomized into 2 cohorts: those who did and did not engage in office-based opioid treatment. The primary end point was the difference in the proportion of visits over the study period for acute OREs between cohorts and within the office-based opioid treatment cohort before and after referral. Secondary end points assessed change in the proportion of outpatient visits for treatment unrelated to opioid use disorder. RESULTS: Four hundred five emergent and outpatient visits were identified: 285 (70.4%) in the office-based opioid treatment cohort and 120 (29.6%) in the non-office-based opioid treatment cohort. After office-based opioid treatment engagement, 27.8% of visits in the office-based opioid treatment cohort were for acute OREs vs 80.8% in the non-office-based opioid treatment cohort (OR, 0.092; 95% CI, 0.052-0.160; P < .001). Outpatient visits in the office-based opioid treatment cohort were 10.9 times that of non-office-based opioid treatment (OR, 10.9; 95% CI, 6.23-19.16; P < .001). Within the office-based opioid treatment cohort, emergent visits decreased from 76.1% to 27.8% (OR, 0.121; 95% CI, 0.070-0.210; P < .001) and the odds of outpatient services was 8.3 times more after engagement (OR, 8.27; 95% CI, 4.78-14.4, P < .001). CONCLUSIONS: The absolute decrease in emergent visits for acute OREs was 53% in adolescents engaged in office-based opioid treatment, representing a relative decrease of 65.6% compared with adolescents not engaged. An analysis of visits before and after office-based opioid treatment demonstrated similar decreases, suggesting that office-based opioid treatment has a significant impact in decreasing acute OREs in the adolescent population.

The role of social work in the opioid epidemic: office-based opioid treatment programs.

The opioid epidemic is a national emergency in the United States. To meet the needs of individuals diagnosed with Opioid Use Disorder (OUD) office-based opioid treatment programs (OBOT) are quickly expanding. However, social workers roles in OBOT programs are not clearly described. This paper will emphasize three roles social workers may fulfill in OBOT programs to combat the opioid crisis.