Clinical trialNCT03568552CompletedInterventional

Patient Decision Aid for Opioid Use Disorder

SponsorUniversity of California, Los AngelesEnrollment7,554Opioid Use Disorder

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

The aim of the study is to test the effectiveness of the Patient Decision Aid for Opioid Use Disorder (PtDA-MAT) by conducting a stepped-wedge cluster-randomized trial in CA H\&SS (stratified by rural vs. non-rural areas) for adults with OUD. Patient outcomes will be tracked by (1) personal assessments (baseline, 3 months, and 6 months): drug use, overdose, healthcare utilization, and (2) clinical and administrative records (over approximately 24 months): drug treatment status and retention, physical and mental health diagnoses, arrest, incarceration, controlled substance use, and mortality. Multilevel models will be applied to test the intervention effects, controlling for possible temporal trends.

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Investigators

The overall officials registered on this study. Names that resolve to a FindMyKOL profile link to it; the rest are shown as registered.

Larissa Mooney, M.D.
University of California, Los Angeles
Principal Investigator
clinicaltrials.gov ↗
Yih-Ing Hser, Ph.D.
University of California, Los Angeles
Principal Investigator
clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States

Ucla Integrated Substance Abuse Programs
Los Angeles, California, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study. It may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 3 Aug 2020
Primary completion: 31 Aug 2024
Completion: 31 Aug 2024
Last update posted: 18 Dec 2025
Registered enrollment: 7,554
Registry id: NCT03568552

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; FindMyKOL does not interpret them.