Abstract
Comparison of Contingency Management Protocols for Reducing Illicit Drug Use Among a Community-Based Sample of Women Engaging in Polysubstance Use
Drug and alcohol dependence, v 267, pp 290-290
01 Feb 2025
Abstract
Aim: To compare the effectiveness of two contingency management protocols designed to encourage illicit stimulant and opioid abstinence among women who inject drugs participating in an ongoing HIV prevention randomized controlled trial.
Methods: As part of the trial, women completed a 3-month contingency management period during which they can complete thrice weekly urine toxicology screenings (utoxs). In protocol A, participants received a $5USD incentive when metabolites of stimulants and opioids were not detected in urine. In protocol B, they received a $5USD incentive when metabolites of stimulants or opioids were not detected, thus doubling the potential incentive obtained each visit. Women also received a scaling bonus after three consecutive negative utoxs (weeks 1-4 $5USD, weeks 5-8 $10USD, weeks 9-12 $15USD). Descriptive statistics were used to summarize self-reported drug use, stimulant and/or opioid negative utoxs, and the number of bonuses distributed, stratified by protocol group. Differences in negative utox rates by protocol group will be examined using a two-sample Wilcoxon Rank-Sum test.
Results: Participants (n=24) were primarily non-Hispanic (87.5%) White (66.7%) women experiencing homelessness (41.7%). The majority (75%) reported using injection drugs 4+ times per day. Stimulant and opioid polysubstance use was common (95.8%). Six participants received Protocol A and 18 received Protocol B. Participants were more engaged in Protocol B, submitting 15% more specimen for urinalysis compared to Protocol A (25.5% v. 9.1%). Likewise, the average rate of negative utoxs per participant per month was higher in Protocol B (1.65 v. 0.22 [stimulants]; 1.39 v. 0.11 [opioids]), and more bonuses were earned (0 v. 0.70 bonuses per participant per month). Importantly, there were no related adverse events in either group.
Conclusions: This pilot study suggests that contingency management incentivizing abstinence to each drug individually has potential benefits for reducing polysubstance use without increasing use of the non-incentivized drug or the occurrence of adverse events.
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Details
- Title
- Comparison of Contingency Management Protocols for Reducing Illicit Drug Use Among a Community-Based Sample of Women Engaging in Polysubstance Use
- Creators
- Kathleen Ward - Drexel UniversityAdam Carrico - Florida International UniversityDaniel Vader - Drexel UniversitySilvana Mazzella - Prevention Point PhiladelphiaReneé Moore - Drexel University, Dana and David Dornsife School of Public HealthAlexis Roth - Drexel University
- Publication Details
- Drug and alcohol dependence, v 267, pp 290-290
- Conference
- 2024 Annual Meeting of the College on Problems of Drug Dependence (Montreal, Canada, 15 Jun 2024–19 Jun 2024)
- Publisher
- Elsevier
- Number of pages
- 1
- Grant note
- Financial Support: This research is supported by NIDA R01DA054543
- Resource Type
- Abstract
- Language
- English
- Academic Unit
- Dana and David Dornsife School of Public Health; Epidemiology and Biostatistics; Community Health and Prevention
- Web of Science ID
- WOS:001470404400104
- Other Identifier
- 991022026257004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Psychiatry
- Substance Abuse