NCT05108649

Brief Summary

The purpose of this study is to examine the effect of nicotine messaging and nicotine content of study cigarettes on nicotine beliefs and subsequent use of tobacco and nicotine products.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
74

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Mar 2022

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 14, 2021

Completed
22 days until next milestone

First Posted

Study publicly available on registry

November 5, 2021

Completed
4 months until next milestone

Study Start

First participant enrolled

March 2, 2022

Completed
2.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 20, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 20, 2024

Completed
1.5 years until next milestone

Results Posted

Study results publicly available

December 8, 2025

Completed
Last Updated

December 8, 2025

Status Verified

November 1, 2025

Enrollment Period

2.3 years

First QC Date

October 14, 2021

Results QC Date

October 1, 2025

Last Update Submit

November 18, 2025

Conditions

Keywords

Smoking Behavior

Outcome Measures

Primary Outcomes (1)

  • Nicotine Beliefs

    Nicotine belief measures will be assessed by participant self-report and comprised of four broad constructs (nicotine beliefs, NRT beliefs, e-cigarette beliefs, and RNC cigarette beliefs). Nicotine beliefs relate specifically to its addictive nature, nicotine as a cause of cancer, and the role of nicotine in the health harms and cancer caused by smoking. The product-specific constructs (i.e., NRT, e-cigarette, RNC cigarette) include items related to the addictiveness of the product and the perceived health risks of the product compared to regular cigarettes. Three items assessing nicotine false beliefs (range 3-11), 6 items assessing nicotine replacement therapy (NRT) false beliefs (range 4-20), 4 items assessing e-cigarette false beliefs (range 2-14), 11 items assessing reduced nicotine content (RNC) cigarettes false beliefs (range 14-45), and two items assessing beliefs about additive-free and organic tobacco products. Higher scale scores indicate a higher number of false beliefs.

    Day 35

Secondary Outcomes (6)

  • Daily Cigarette Consumption

    Day 35

  • Puff Duration

    Day 35

  • Carbon Monoxide (CO)

    Day 35

  • Number of Participants With Intention to Use Tobacco/Nicotine Products

    Day 35

  • Tobacco Use

    Day 35

  • +1 more secondary outcomes

Other Outcomes (3)

  • Behavioral Control

    Day 35

  • Nicotine Related Norms

    Day 35

  • Attitudes About Nicotine

    Day 35

Study Arms (4)

Nicotine Corrective Messaging

EXPERIMENTAL

After completing a 7-day baseline period, participants will be randomized to a 28-day experimental period and will view nicotine corrective messaging at each in-person session.

Other: Nicotine Messaging

Delayed Control Messaging

EXPERIMENTAL

After completing a 7-day baseline period, participants will be randomized to a 28-day experimental period and will not view nicotine messaging until the final study session (Delayed Control Messaging).

Other: Nicotine Messaging

Normal Nicotine Content (NNC) cigarettes

EXPERIMENTAL

After completing a 7-day baseline period of smoking own brand cigarettes, participants will be randomized to a 28-day experimental period and will receive normal nicotine content cigarettes.

Other: Cigarette Condition

Reduced Nicotine Content (RNC) cigarettes

EXPERIMENTAL

After completing a 7-day baseline period of smoking own brand cigarettes, participants will be randomized to a 28-day experimental period and will receive reduced nicotine content cigarettes.

Other: Cigarette Condition

Interventions

After completing a 7-day period of smoking own brand cigarettes, participants will be randomized to a 28-day experimental period and will receive reduced nicotine content (RNC) cigarettes or normal nicotine content (NNC) cigarettes.

Normal Nicotine Content (NNC) cigarettesReduced Nicotine Content (RNC) cigarettes

After completing a 7-day baseline period, participants will be randomized to a 28-day experimental period and will view nicotine corrective messaging at each in-person session or delayed control messaging at the final study session.

Delayed Control MessagingNicotine Corrective Messaging

Eligibility Criteria

Age21 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Self-report smoking at least 5 non-menthol, filtered cigarettes per day for at least the last 12 months.
  • Not currently undergoing smoking cessation treatment or planning to quit over the duration of the study (\~6 weeks).
  • Plan to live in the area for the duration of the study.
  • Capable of giving written informed consent, which includes compliance with the requirements and restrictions listed in the combined consent and HIPAA form.
  • Able to communicate fluently in English (i.e., speaking, writing, and reading).

You may not qualify if:

  • Smoke menthol cigarettes greater than 20% of the time.
  • Smoke cigarettes of non-standard circumference (e.g., wides, slim, capri, etc.)
  • Use of any nicotine containing products other than cigarettes. Participants reporting isolated use of other nicotine containing products less than 5 times per month are eligible to participate.
  • Attempt to quit smoking over the duration of the study period.
  • Provide a Carbon Monoxide (CO) reading less than 5 parts per million (ppm) at Session 1 (D0).
  • History of substance abuse (other than nicotine) in the past 12 months and/or currently receiving medical treatment for substance abuse. Attendance at alcoholics anonymous or narcotics anonymous meetings will not be considered medical treatment for the purposes of this protocol.
  • Current alcohol consumption that exceeds 25 standard drinks/week.
  • Women, including all individuals assigned as "female" at birth, who are pregnant, breast feeding, or planning a pregnancy over the duration of the study period.
  • Any impairment including, but not limited to, visual, physical, and/or neurological impairments preventing the proper completion of the study procedures. Notable impairments will be evaluated on a case-by-case basis by the Principal Investigator and/or the Study Physician.
  • Color blindness.
  • Serious or unstable medical condition. Applicable conditions will be evaluated on a case-by-case basis by the Principal Investigator and/or the Study Physician.
  • Lifetime history of schizophrenia, psychosis, and/or bipolar disorder.
  • Current diagnosis of active major depression. Participants who maintain a diagnosis of major depression who have not experienced any major depressive episodes in the past 6 months and are stable on antidepressant medication(s) are eligible to participate.
  • Past, current, anticipated, or pending enrollment in another research program over the study period that could potentially impact subject safety, study data, and/or the study design as determined by the Principal Investigator and/or Study Physician.
  • Any circumstance, medical condition, illness, disorder, adverse event (AE), or concomitant medication that could compromise participant safety or significantly impact study performance as determined by the Principal Investigator and/or Study Physician. Participants may be withdrawn for any of the aforementioned reasons at any point throughout the study.
  • +1 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Center for Interdisciplinary Research for Nicotine Addiction

Philadelphia, Pennsylvania, 19104, United States

Location

MeSH Terms

Conditions

SmokingCigarette Smoking

Condition Hierarchy (Ancestors)

BehaviorTobacco SmokingTobacco Use

Results Point of Contact

Title
Valentina Goren, MRA Project Manager
Organization
University of Pennsylvania

Study Officials

  • Andrew Strasser, Ph.D.

    University of Pennsylvania

    PRINCIPAL INVESTIGATOR
  • Andrea Villanti, Ph.D.

    Rutgers University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Masking Details
Participants are unblinded to the nicotine content of their cigarette, either normal nicotine content (NNC) cigarettes or reduced nicotine content (RNC) cigarettes. However, participants will not be aware of the messaging condition assignment, either Nicotine Corrective Messaging (NCM) or the Delayed Control Messaging.
Purpose
OTHER
Intervention Model
FACTORIAL
Model Details: This project will recruit current, daily, non-menthol cigarette smokers to a 35-day, randomized, factorial design protocol. After a 7-day period of smoking own preferred brand cigarettes, participants will be randomized to a 28-day experimental period and will be randomized to one of four conditions: 1) Nicotine Corrective Messaging (NCM) + Reduced nicotine content (RNC) cigarettes, 2) NCM + normal nicotine content (NNC) cigarettes, 3) Delayed Control Messaging + RNC cigarettes, or 4) Delayed Control Messaging + NNC cigarettes.
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

October 14, 2021

First Posted

November 5, 2021

Study Start

March 2, 2022

Primary Completion

June 20, 2024

Study Completion

June 20, 2024

Last Updated

December 8, 2025

Results First Posted

December 8, 2025

Record last verified: 2025-11

Locations