Trial Outcomes & Findings for Cigarette Smoking Decision Study (NCT NCT04595279)

NCT ID: NCT04595279

Last Updated: 2025-06-15

Results Overview

Number of cigarette puff bouts smoked at no cost as measured by a demand curve

• Recruitment status: COMPLETED
• Study phase: NA
• Target enrollment: 37 participants
• Primary outcome timeframe: Through study completion, an average of 2 weeks
• Results posted on: 2025-06-15

Participant Flow

Participant milestones

Measure	Greenwashing and Control Advertising This is the single arm that will go through 9 cigarette smoking sessions. Participants complete 9 experimental sessions in which they see concurrently presented greenwashing and control advertisements for cigarettes. Data are from those 9 sessions. Smoking sessions: Participants undergo topography and behavioral economic sessions where they can make choices to earn cigarette puffs by pulling plungers on experimental equipment. There is a within-session randomization to earn greenwashing versus control advertised cigarettes. Both conditions were present in each session with variations in cost.
Overall Study STARTED	37
Overall Study COMPLETED	31
Overall Study NOT COMPLETED	6

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Cigarette Smoking Decision Study

Baseline characteristics by cohort

Measure	Smoking Sessions n=37 Participants This is the single arm that will go through cigarette smoking sessions Smoking sessions: Participants undergo topography and behavioral economic sessions where they can make choices to earn cigarette puffs by pulling plungers on experimental equipment
Age, Continuous	28.5 years STANDARD_DEVIATION 4.2 • n=5 Participants
Sex: Female, Male Female	27 Participants n=5 Participants
Sex: Female, Male Male	10 Participants n=5 Participants
Race (NIH/OMB) American Indian or Alaska Native	1 Participants n=5 Participants
Race (NIH/OMB) Asian	2 Participants n=5 Participants
Race (NIH/OMB) Native Hawaiian or Other Pacific Islander	0 Participants n=5 Participants
Race (NIH/OMB) Black or African American	14 Participants n=5 Participants
Race (NIH/OMB) White	13 Participants n=5 Participants
Race (NIH/OMB) More than one race	5 Participants n=5 Participants
Race (NIH/OMB) Unknown or Not Reported	2 Participants n=5 Participants

PRIMARY outcome

Timeframe: Through study completion, an average of 2 weeks

Population: Participants that completed the study

Number of cigarette puff bouts smoked at no cost as measured by a demand curve

Outcome measures

Measure	Greenwashing and Control Advertising n=31 Participants Participants completed 9 experimental sessions in which they saw concurrently presented greenwashing and control advertisements for cigarettes. Data are from those 9 sessions.
Demand Intensity as Assessed by a Behavioral Economic Demand Curve Greenwashing Advertisment	4.709677419 puff bouts Standard Deviation 3.588811766
Demand Intensity as Assessed by a Behavioral Economic Demand Curve Control Advertisement	2.580645161 puff bouts Standard Deviation 3.442617159

PRIMARY outcome

Timeframe: Through study completion, an average of 2 weeks

Population: Data could not be summarized for elasticity measures due to lack of non-zero responding at higher prices on the demand curve.

Sensitivity of cigarette consumption to changes in cost for cigarettes

Outcome measures

Outcome data not reported

PRIMARY outcome

Timeframe: Through study completion, an average of 2 weeks

Population: Participants that completed the study

Sensitivity of cigarette consumption to changes in cost for alternative products as a linear slope.

Outcome measures

Measure	Greenwashing and Control Advertising n=31 Participants Participants completed 9 experimental sessions in which they saw concurrently presented greenwashing and control advertisements for cigarettes. Data are from those 9 sessions.
Cross-price Elasticity Coefficients as Assessed by a Behavioral Economic Demand Curve Greenwashing Advertising	0.03 slope Standard Deviation 0.09
Cross-price Elasticity Coefficients as Assessed by a Behavioral Economic Demand Curve Control Advertising	0.05 slope Standard Deviation 0.12

PRIMARY outcome

Timeframe: Days 2 and 3

Population: Participants that completed the study

Total cigarette puff volume in milliliters (mls)

Outcome measures

Measure	Greenwashing and Control Advertising n=31 Participants Participants completed 9 experimental sessions in which they saw concurrently presented greenwashing and control advertisements for cigarettes. Data are from those 9 sessions.
Change in Total Puff Volume as Measured by a Smoking Topography Machine Greenwashing Advertising	1649 mLs Standard Error 1490
Change in Total Puff Volume as Measured by a Smoking Topography Machine Control Advertising	1321 mLs Standard Error 883.7

Adverse Events

Smoking Sessions

Serious events: 0 serious events

Other events: 0 other events

Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Matthew Johnson

Johns Hopkins University

Phone: 410-550-0056

Email: mwj@jhu.edu

Results disclosure agreements

• Principal investigator is a sponsor employee
• Publication restrictions are in place