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Development of a Methamphetamine Early Intervention

This study has been completed.
National Institute on Drug Abuse (NIDA)
Information provided by (Responsible Party):
University of Washington Identifier:
First received: August 2, 2010
Last updated: December 12, 2012
Last verified: December 2012
Methamphetamine abuse has a strong and consistent epidemiologic association with high-risk sexual behavior and both prevalent and incident HIV in men who have sex with men (MSM), and some authorities have advocated methamphetamine treatment as an HIV prevention strategy. However, methamphetamine interventions have not been evaluated in controlled trials, nor have they been implemented and assessed outside of substance abuse treatment programs. This application proposes preliminary investigations to adapt a methamphetamine treatment intervention previously associated with decreased sexual-risk taking among MSM for use as an early intervention among MSM in Seattle, Washington. Sixty methamphetamine-using MSM will be enrolled in a randomized controlled trial of contingency management (CM) versus no intervention. CM participants will have their urine tested for methamphetamine 3 times weekly for 12 weeks, and will receive vouchers of escalating value when their urines test negative; vouchers will be withheld when participants' urines test positive for methamphetamine or participants miss urine testing visits. All participants will undergo urine methamphetamine testing and audio-computer assisted self-interviews on sexual behavior and substance use at baseline and at 6 week intervals for 6 months. Participants will be tested for HIV, syphilis, rectal gonorrhea and chlamydial infection, and pharyngeal gonorrhea at baseline and at 3 and 6 month follow-up. The study will determine how often MSM will initiate and complete the early intervention, and will longitudinally measure unsafe sexual behaviors among intervention and control participants. Study results will determine the feasibility of instituting and studying CM as an early intervention; define whether the intervention is sufficiently promising to justify a larger, definitive randomized controlled trial; and will provide estimates for defining the number of participants such a trial would require.

Condition Intervention Phase
Sexual Behavior
Behavioral Research
Behavioral: Contingency management
Phase 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Investigator)
Primary Purpose: Prevention
Official Title: Development of a Methamphetamine Early Intervention

Resource links provided by NLM:

Further study details as provided by University of Washington:

Primary Outcome Measures:
  • Non-concordant unprotected anal intercourse [ Time Frame: Baseline, 6, 12, 18, 24 weeks ]

Secondary Outcome Measures:
  • Number of non-concordant unprotected anal intercourse partners [ Time Frame: Baseline, 6, 12, 18, 24 weeks ]
  • Stimulant (methamphetamine and crack/cocaine) urinalyses [ Time Frame: Baseline, 6, 12, 18, 24 weeks ]
  • Self-reported methamphetamine use [ Time Frame: Baseline, 6, 12, 18, 24 weeks ]

Enrollment: 127
Study Start Date: December 2006
Study Completion Date: April 2009
Primary Completion Date: April 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
No Intervention: Referral to community resources
Experimental: Contingency Management Behavioral: Contingency management
A 12-week contingency management intervention
Other Name: Voucher-based reinforcement


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Anal sex with another man in the month prior to enrollment
  • Use of methamphetamine on at least 2 days in the month prior to enrollment

Exclusion Criteria:

  • Plans to move from the study catchment area within 6 months of enrollment
  • A mutually monogamous relationships with a man of the same HIV status lasting 2 or more years
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Please refer to this study by its identifier: NCT01174654

United States, Washington
Lifelong AIDS Alliance
Seattle, Washington, United States, 98122
Sponsors and Collaborators
University of Washington
National Institute on Drug Abuse (NIDA)
Principal Investigator: Matthew Golden University of Washington
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: University of Washington Identifier: NCT01174654     History of Changes
Other Study ID Numbers: R21DA019420-01A1 ( US NIH Grant/Contract Award Number )
Study First Received: August 2, 2010
Last Updated: December 12, 2012

Additional relevant MeSH terms:
Central Nervous System Stimulants
Physiological Effects of Drugs
Autonomic Agents
Peripheral Nervous System Agents
Dopamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Adrenergic Agents
Adrenergic Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Dopamine Uptake Inhibitors processed this record on April 24, 2017