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CompletedNCT05946031Updated Jun 5, 2026

Testing the ETM: Examination and Comparison of Different Methods

An Early Phase 1 interventional study of Reat ETM and Hypothetical ETM in Cigarette Smoking, sponsored by Virginia Polytechnic Institute and State University. Completed at 1 site in United States. Open to participants aged 21 Years and older. Per ClinicalTrials.gov, last updated 2026-06-05.

Sponsored by Virginia Polytechnic Institute and State University · Early Phase 1, Interventional, and Basic science

From the registry’s dates

  • Primary completion was Aug 2025, 1 year 1 month ago, and no results have been posted to the registry.
Phase
Early Phase 1
Study type
Interventional
Enrollment
87
Allocation
Randomized
Ages
21 Years and older
Sex
All
01

Study summary

This study will experimentally assess the comparability of in-lab and remote procedures with hypothetical and real ETM purchase outcomes.

Read the detailed description

In a between-group within-subject repeated measures design, participants will be randomly assigned to one of two procedures (in-lab or remote; between-group) and complete two conditions (real and hypothetical; within-subject), which include six trials assessing increasing cigarette prices.

02

Conditions studied

  • Cigarette Smoking

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03

In context

Cigarette Smoking

114 studies on the registry are indexed under Cigarette Smoking; 59 are open to participants now.

This study's enrollment of 87 is below the median of 100 across 101 interventional studies indexed under Cigarette Smoking.

Browse Cigarette Smoking studies →

Lead sponsor

Virginia Polytechnic Institute and State University is the lead sponsor of 124 studies on the registry; 27 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Provide informed consent
  • Be at least 21 years of age or older
  • Stable tobacco use patterns for at least three months
  • Smoke at least 5 cigarettes daily
  • Use other tobacco products less than weekly
  • Have access to a computer and internet

Exclusion criteria

Exclusion Criteria:

  • report uncontrolled physical or mental health conditions (e.g., uncontrolled diabetes, high blood pressure, major depressive disorder, etc.),
  • use of smoking cessation medications (e.g., nicotine replacement, bupropion, varenicline) in the past 30 days,
  • report concrete, immediate plans to alter/quit using their usual tobacco products in the next 30 days,
  • be pregnant or lactating
05

Study design

Phase
Early Phase 1
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
87 participants (actual)

Study arms

  • Experimental
    In-lab procedures

    Exclusive cigarette smokers will be recruited and will experience all study procedures in the laboratory.

    Drug: Reat ETM · Drug: Hypothetical ETM

  • Experimental
    Remote procedures

    Exclusive cigarette smokers will be recruited and will experience all study procedures remotely.

    Drug: Reat ETM · Drug: Hypothetical ETM

Interventions

  • DrugReat ETM

    Exclusive cigarette smokers will be recruited and will be exposed to the real ETM condition in which tobacco purchases are real and they receive products from one randomly selected trial.

  • DrugHypothetical ETM

    Exclusive cigarette smokers will be recruited and will be exposed to the hypothetical ETM condition in which tobacco purchases are hypothetical and they don't receive any products.

06

What researchers measure

Primary outcomes

  1. Cigarette demand

    Participants will complete purchasing trials in an Experimental Tobacco Marketplace (ETM) with cigarettes increasing in price. Other product prices in the ETM will remain constant. To obtain dependent measures of demand, participants' purchasing of the price-manipulated commodity in the ETM task will be fit to a modified exponential equation to quantify the relationship between the price of each commodity and purchasing: Q=Q0\*10k(exp(-αQ0C)-1) where Q is purchasing of the commodity, C is the price, Q0 is the derived initial purchasing without cost constraints (demand intensity), k is the span of the function in logarithmic units, and α is the demand elasticity.

    Time frame: 1 day

  2. Nicotine/tobacco products substitution

    Participants will complete purchasing trials in an Experimental Tobacco Marketplace (ETM) with cigarettes increasing in price. Other product prices in the ETM will remain constant. To obtain estimates of substitution of price-constant products in the different ETM conditions, the investigators will use ordinary least squares regression to model the relationship of the price-manipulated product to predict total quantity purchased of the price-constant product.

    Time frame: 1 day

07

Study locations

1 site
  • Fralin Biomedical Research Institute
    Roanoke, Virginia 24016, United States
08

References and documents

Individual participant data

Plan to share: No — The study team will share de-identified data upon request.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 5, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05946031
Lead sponsor
Virginia Polytechnic Institute and State University
Responsible party
Jeffrey Stein (Associate Professor, Virginia Polytechnic Institute and State University) — Principal investigator
First posted
Jul 14, 2023
Start date
Dec 2, 2024
Primary completion
Aug 14, 2025
Completion
Aug 15, 2025
Last update
Jun 5, 2026

Study contacts

Jeffrey Stein, Ph.D.
principal investigator · Fralin Biomedical Research Institute at VTC

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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