Improving Overdose Prevention and Treatment in the Criminal Legal System
JCOIN supports researchers working in partnership with criminal legal system and behavioral health treatment professionals to build the evidence base for effective SUD service delivery, implementation, and dissemination. Each JCOIN study addresses a specific gap in the SUD care cascade, at one or more intercept points including jails, prisons, community corrections, problem-solving courts, and juvenile justice agencies. The studies evaluate the effectiveness and/or implementation of behavioral interventions, digital therapeutics, comprehensive patient-centered treatments, and medications for opioid use disorder (MOUD) in communities throughout the United States.
JCOIN research projects vary in size, complexity, and duration, from small pilot studies to large multisite clinical trials. JCOIN 1.0 projects were conducted between 2019-2025. JCOIN 2.0 studies were launched beginning in 2025.
Browse all projects, or use the filtering tools below for more information about JCOIN studies.

Post-overdose Pathways to Buprenorphine Initiation: A Pragmatic Trial of Treatment Delivered in the Field (076)
Emergency medical services’ (EMS) administration of naloxone combined with transport to the emergency department (ED) to receive MOUD has emerged…
Evaluating a Mobile Health Unit’s Methadone Dosing Services to Address Health Disparities (075)
Wide-ranging strategies to improve OUD treatment engagement and retention for those in the criminal-legal system are needed, particularly for improving…
Identifying MOUD Critical Access Units (074)
Medication opioid use disorder (MOUD) treatment is the first-line approach to the treatment of opioid use disorder (OUD). This analysis…
Community vs Home-Based XR-NTX Dosing Post-Release (073)
This study focuses on whether the addition of mobile medical extended-release naltrexone treatment (XR-NTX) will increase adherence and thus efficacy…
The Effect of Social Determinants on Health and OUD Treatment Post Release (072)
The first Aim of this proposal is to determine the relationship between social determinants of health (SDoH) and treatment selection/receipt…
The Recovery Capital Model in a Drug Court Setting (071)
The primary aim of this study is to build on our previous feasibility pilot of the Recovery Capital intervention (REC-CAP)…
Peer Delivered Episodic Future Thinking to Improve MOUD Treatment Engagement among Returning Citizens (070)
Individuals returning to the community following incarceration (“returning citizens”) with substance use disorders (SUD) are at the greatest risk for…
Analysis of Fentanyl Mentions in Social Media (069)
This study seeks to understand public attitudes and knowledge of fentanyl through an analysis of discussions on popular social media…
Qualitative Research to Understand Causes of Stigma (068)
This qualitative research study builds on JCOIN026 (Brief Stigma Surveys) by conducting interviews with AmeriSpeak participants based on their OUD…