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CNTPT 030: Feasibility of crystal methamphetamine intervention

Feasibility of Crystal Methamphetamine Interventions Among Gay, Bisexual and Other Men Who Have Sex with Men in British Columbia

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About the study (objectives)

As a pilot trial, CTNPT 030 has several aims: (1) to determine the feasibility and acceptability of interventions to reduce crystal methamphetamine use; (2) to design community-informed study outcomes and questionnaires for a larger trial; and (3) to determine the feasibility of conducting a larger trial. This trial will be guided by a Community Engagement Committee of gay, bisexual, and queer men of mixed HIV status from across British Columbia who have used crystal methamphetamine.

About the disease/condition (background/context)

The use of crystal methamphetamine has been associated with negative psychological and medical consequences. In gay, bisexual, and other men who have sex with men, crystal methamphetamine use may increase the chance of acquiring HIV due to an increase in sexual risk-taking behaviour. In gay, bisexual, and other men who have sex with men living with HIV, crystal methamphetamine use has been associated with lower engagement in care and poor treatment adherence, leading to a decreased likelihood of viral load suppression and an increased potential chance of transmitting HIV.

Study Approach (methodology)

This pilot trial will be conducted in two parts. First, 20 community members will complete in-depth interviews, which will be used to identify relevant topics and experiences with existing crystal methamphetamine interventions; this information will be used to design an online survey. Second, 500 community members will be recruited to complete the new online survey. Information collected in the survey will focus on eligibility and willingness to participate in a larger intervention trial and on the characteristics of acceptable interventions, study design, and measurement of problematic crystal methamphetamine use.

Eligibility criteria 


  • Identify as a man (inclusive of transgender men)
  • Be 16 years of age or older (some questionnaire items will not be asked of minors who are 16 or 17)
  • Report sexual activity with another man in the previous six months
  • Report use of crystal methamphetamine in the previous six months
  • Reside in British Columbia
  • Able to complete an online questionnaire and/or interview in English
  • Able to provide informed consent

Participating Sites

School of Public Health and Social Policy,
Faculty of Human and Social Development,
University of Victoria in Victoria
Victoria, BC

MSM Program of Research,
Division of Epidemiology and Population Health,
BC Centre for Excellence in HIV/AIDS
Vancouver, BC

Additional Information

If you would like more information on this clinical study, please contact the principal investigator.

Principal Investigator

Dr. Nathan Lachowsky
Assistant Professor
School of Public Health and Social Policy
University of Victoria


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