ArticleThe International journal on drug policy2023
Trajectories of drug treatment and illicit opioid use in the AIDS Linked to the IntraVenous Experience cohort, 2014-2019.
Article in The International journal on drug policy, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 7 citations in OpenAlex.
- Concurrent Use of Extra-Medical Medication for Opioid Use Disorder Among Adults Prescribed Methadone or Buprenorphine: A Cohort Study of Urban Adults Who Have Injected Drugs.Drug and alcohol review · 2026Article
- Profiles of care trajectories among patients with substance-related disorders, assessed over nine years considering other patient characteristics and subsequent adverse outcomes.Substance abuse treatment, prevention, and policy · 2026Article
- Harm reduction engagement and ongoing opioid use among adults receiving methadone or buprenorphine in Philadelphia.Harm reduction journal · 2026Article
- Drug treatment and support service utilization amidst the COVID-19 pandemic among people who inject drugs in Baltimore, Maryland: An interrupted time-series analysis, 2015-2022.The International journal on drug policy · 2025Article
- Article
- Structural and social changes due to the COVID-19 pandemic and their impact on engagement in substance use disorder treatment services: a qualitative study among people with a recent history of injection drug use in Baltimore, Maryland.Harm reduction journal · 2024Article
- Longitudinal patterns of use of stimulants and opioids in the AIDS linked to the IntraVenous experience cohort, 2005-2019.The International journal on drug policy · 2024Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
backgroundMedication for opioid use disorder (MOUD) is an effective intervention to combat opioid use disorder and overdose, yet there is limited understanding of engagement in treatment over time in the community, contextualized by ongoing substance use. We aimed to identify concurrent trajectories of methadone prescriptions, buprenorphine prescriptions, and illicit opioid use among older adults with a history of injection drug use.
methodsWe used data on 887 participants from the AIDS Linked to the IntraVenous Experience cohort, who were engaged in the study in 2013 and attended ≥1 visit during follow-up (2014-2019). Outcomes were self-reported MOUD prescription and illicit opioid use in the last 6 months. To identify concurrent trajectories in all 3 outcomes, we used group-based multi-trajectory modeling. We examined participant characteristics, including sociodemographics, HIV status, and other substance use, overall and by cluster.
resultsWe identified 4 trajectory clusters: (1) no MOUD and no illicit opioid use (43%); (2) buprenorphine and some illicit opioid use (11%); (3) methadone and no illicit opioid use (28%); and (4) some methadone and illicit opioid use (18%). While prevalence of each outcome was stable across time, transitions on/off treatment or on/off illicit opioid use occurred, with the rate of transition varying by cluster. The rate of transition was highest in Cluster 3 (0.74/person-year) and lowest in Cluster 1 (0.18/person-year). We saw differences in participant characteristics by cluster, including that the buprenorphine cluster had the highest proportion of people with HIV and participants who identified as non-Hispanic Black.
conclusionsMost participants had discontinued illicit opioid use and were also not accessing MOUD. Trajectories defined by engagement with buprenorphine or methadone had distinct sociodemographic and behavioral characteristics, indicating that tailored interventions to expand access to both types of treatment are likely needed to reduce harms associated with untreated opioid use disorder.
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