Tobacco and cannabis co-use: how young adults start, escalate, and maintain dual use
Official title: Understanding Tobacco and Cannabis Co-Use Practices: Initiation, Escalation, and Maintenance
Run by Roswell Park Cancer Institute · NCT07439471 · Data updated 2026-11-12
This project sees how 18–30-year-olds who use cannabis weekly start, escalate, and keep using either daily cigarettes or daily nicotine vapes.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 30 Years |
| Sex | All |
| Enrollment | 40 (estimated) |
| Sponsor | Roswell Park Cancer Institute Academic / other |
| Locations | 1 site (Buffalo, New York) |
| Status | Recruiting |
| Started | December 28, 2026 |
| Main results expected | March 2027 |
| Study ends | March 2027 |
| Registry record updated | November 9, 2026 |
| Trial ID | NCT07439471 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are English-speaking adults aged 18–30 who live in the Roswell Park catchment, use cannabis at least weekly, and either smoke cigarettes daily (and vape ≤1 day/week) or use nicotine vapes daily (and smoke ≤1 day/week).
✕Probably not a fit
People under 18 or over 30, those who do not use cannabis at least weekly, or those living outside the Roswell Park catchment are not eligible and would not benefit from participating.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Researchers will conduct structured interviews and surveys with English-speaking participants aged 18–30 living in the Roswell Park catchment to document histories of tobacco and cannabis co-use. Participants are grouped by current product use: daily cigarette smokers who rarely vape, or daily nicotine vapers who rarely smoke cigarettes. Interview transcripts will undergo thematic analysis to identify individual, social, and product-level factors linked to initiation, escalation, and maintenance of co-use. This is a non-interventional, observational protocol focused on qualitative and survey data collection.
Why it matters
Potential benefit: If successful, the findings could inform better-targeted prevention and cessation strategies for young adults who use both cannabis and tobacco.
How similar studies have gone: Previous qualitative and survey research has described common tobacco–cannabis co-use patterns, so this structured interview approach builds on established methods while focusing on a specific young adult population.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria:
* \* Adults aged 18 to 30 years old.
* Currently living in the Roswell Park catchment area.
* Able to speak, read, and write in English.
* Currently consuming cannabis at least weekly.
* Group 1: currently using cigarettes daily and not using nicotine vaping products more than one day per week.
* Group 2: currently using nicotine vaping products daily and not using cigarettes more than one day per week.
Exclusion Criteria:
* \* Unwilling or unable to follow protocol requirements.
* Individuals under the age of 18 or over 30.
* Individuals not meeting product consumption criteria for inclusion items 3 and 4.
Where it's running
-
Roswell Park Cancer Institute
Buffalo, New York, United States Recruiting
Study contacts
- Principal investigator: Connor Martin — Roswell Park Cancer Institute
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.