Understanding Tobacco and Cannabis Co-Use Practices: Initiation, Escalation, and Maintenance

May 21, 2026 updated by: Roswell Park Cancer Institute
This study evaluates histories among cannabis and tobacco co-users of their initiation, escalation, and maintenance of the co-use behavior.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

PRIMARY OBJECTIVE:

I. To generate detailed thematic analysis of structured interviews to provide insights into individual historical factors, social contextual factors, and product-level factors that contribute to the co-use of nicotine/tobacco and cannabis products.

OUTLINE: This is an observational study.

Participants complete an interview and survey on study.

Study Type

Observational

Enrollment (Estimated)

40

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New York
      • Buffalo, New York, United States, 14263
        • Recruiting
        • Roswell Park Cancer Institute
        • Contact:
        • Principal Investigator:
          • Connor Martin

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Adult cannabis users who also use cigarettes or nicotine vaping products.

Description

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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Observational
Participants complete an interview and survey on study.
Other: Non-Interventional Study
Non-interventional study
Other Names:
  • Non-Interventional Observational Study
  • Noninterventional (Observational) Study

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
thematic analysis of individual narratives on nicotine and cannabis
Time Frame: Reported at baseline
Structured interview sessions
Reported at baseline

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Insight into the Social contexts of use and co-use of nictotine and cannabis
Time Frame: reported at baseline
Structured interview session on escalation of use
reported at baseline
Insight into Current practices of tobacco/cannabis use
Time Frame: reported at baseline
Structured interview session on maintenance of use
reported at baseline
Insights into factors that contribute to the co-use of nicotine/tobacco and cannabis products
Time Frame: reported at baseline
Structured interview sessions on history of use
reported at baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Roswell Park Cancer Institute

Investigators

  • Principal Investigator: Connor Martin, Roswell Park Cancer Institute

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

June 28, 2026

Primary Completion (Estimated)

March 1, 2027

Study Completion (Estimated)

March 1, 2027

Study Registration Dates

First Submitted

February 12, 2026

First Submitted That Met QC Criteria

February 24, 2026

First Posted (Actual)

February 27, 2026

Study Record Updates

Last Update Posted (Actual)

May 22, 2026

Last Update Submitted That Met QC Criteria

May 21, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • I-4794825 (Other Identifier: Roswell Park Cancer Institute)
  • NCI-2026-00804 (Registry Identifier: CTRP (Clinical Trial Reporting Program))

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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