ClinicalTrials.gg
CompletedNCT00249457Updated Oct 30, 2017

Employment-based Reinforcement to Motivate Drug Abstinence in the Treatment of Drug Addiction. - 2

An interventional study of Contingency management in Behavior, Addictive, Cocaine Abuse and Cocaine Dependence, sponsored by Johns Hopkins University. Completed at 1 site in United States. Open to female participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2017-10-30.

Primary conditionCocaine-Related DisordersRegistry: Behavior, AddictiveReclassifiedWhy we changed it
Registry
Behavior, Addictive — the first condition term the registry derived for this study.
ClinicalTrials.gg
Cocaine-Related Disorders
Why
  1. Behavior, Addictive is a broad heading, used only when no more specific condition is named.
  2. The study's listed conditions name Cocaine-Related Disorders.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Johns Hopkins University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
Female
01

Study summary

The purpose of this study is to determine whether long-term exposure to the Therapeutic Workplace intervention could sustain drug abstinence over an extended period of time in heroin- and cocaine-dependent, unemployed, treatment-resistant young mothers.

Read the detailed description

The current study is a continuation of the research into the development and evaluation of a novel treatment designed to address the chronic, persistent nature of drug addiction. This treatment, called the Therapeutic Workplace, integrates abstinence reinforcement contingencies of proven efficacy into a model supported work program. Participants were paid to work or to train in the Therapeutic Workplace but had to provide drug-free urine samples to gain daily access. Forty participants were randomly assigned to a Therapeutic Workplace or usual care control group. Therapeutic Workplace participants could work for about 5 years. This study reports the effects of the intervention over a follow-up period of 8 years after treatment initiation.

02

Conditions studied

  • Behavior, Addictive
  • Cocaine Abuse
  • Cocaine Dependence
  • Heroin Dependence
  • Opioid Dependence

Keywords

  • Behavior Therapy
  • Cocaine Abuse
  • Cocaine Dependence
  • Contingency Management
  • Heroin Dependence
  • Methadone
  • Opioid Dependence
03

In context

Cocaine-Related Disorders Reclassified

416 studies on the registry are indexed under Cocaine-Related Disorders; 12 are open to participants now.

This study's enrollment of 40 is below the median of 60 across 313 interventional studies indexed under Cocaine-Related Disorders.

Browse Cocaine-Related Disorders studies →

Lead sponsor

Johns Hopkins University is the lead sponsor of 1,815 studies on the registry; 315 are open to participants now.

Of its 208 completed or terminated interventional studies of FDA-regulated products, 144 (69%) have results posted.

Compared within Cocaine-Related Disorders, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Behavior, Addictive. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • When originally enrolled in the study, participants were at least 18 years old, unemployed, and methadone maintenance patients of the Center for Addiction and Pregnancy (CAP) who continued to use opiates or cocaine during CAP treatment.

Exclusion criteria

Exclusion Criteria:

  • Participants were excluded if they were at risk for suicide at the time of intake or if they had serious psychiatric illness (e.g., schizophrenia).
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
40 participants (actual)

Study arms

  • Experimental
    Therapeutic Workplace

    Contingency management. Invited to work in the Therapeutic Workplace. Completed monthly assessments.

    Behavioral: Contingency management

  • No intervention
    Usual Care Control Group

    No intervention. Not invited to work int the Therapeutic Workplace. Completed monthly assessments.

Interventions

  • BehavioralContingency management

    Invited to attend the Therapeutic Workplace 3 hr per day, Monday through Friday. Each day when a participant reported to the workplace, she was required to provide a urine sample. If the sample tested negative for opiates and cocaine, she was allowed to work that day. Participants who gained entrance to the workplace participated in basic skills education and job skills training throughout each 3-hr work shift.

06

What researchers measure

Primary outcomes

  1. Percentage of urine samples at the assessments that were negative for cocaine

    (total number of monthly urine samples negative for cocaine/total number of possible urine samples) x 100

    Time frame: every 30 days throughout fourth year

  2. Percentage of urine samples at the assessments that were negative for opiates

    (total number of monthly urine samples negative for opiates/total number of possible urine samples) x 100

    Time frame: every 30 days throughout fourth year

  3. Percentage of urine samples at the assessments that were negative for cocaine and opiates

    (total number of monthly urine samples negative for cocaine and opiates/total number of possible urine samples) x 100

    Time frame: every 30 days throughout fourth year

Secondary outcomes

  1. HIV risk behaviors

    Time frame: every 30 days throughout fourth year

  2. Percentage of participants employed each month

    Time frame: every 30 days throughout fourth year

  3. Number of days employed each month

    Time frame: every 30 days throughout fourth year

  4. Percentage of participants to self-report abstinence at all time points

    Time frame: every 30 days throughout fourth year

07

Study locations

1 site
  • The Center for Learning and Health
    Baltimore, Maryland 21224, United States
08

References and documents

Publications

  • Aklin WM, Wong CJ, Hampton J, Svikis DS, Stitzer ML, Bigelow GE, Silverman K. A therapeutic workplace for the long-term treatment of drug addiction and unemployment: eight-year outcomes of a social business intervention. J Subst Abuse Treat. 2014 Nov-Dec;47(5):329-38. doi: 10.1016/j.jsat.2014.06.013. Epub 2014 Jul 12. PubMed 25124257 ↗

Individual participant data

Plan to share: No — The data for this study have been published in a peer-reviewed journal.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 30, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00249457
Responsible party
Sponsor
First posted
Nov 7, 2005
Start date
Oct 1996
Primary completion
Jan 2006
Completion
Jan 2006
Last update
Oct 30, 2017

Study contacts

Kenneth Silverman, Ph.D.
principal investigator · Johns Hopkins University

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2017. You cannot join it, but the record below documents what was studied.

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