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Updated: Feb 1, 2026
10:44
Comparing the Effects of Electronic Cigarette Vapor and Cigarette Smoke in a Novel In Vivo Exposure System
Published on: May 24, 2017
12.1K
Impact of E-cigarette Sampling on Cigarette Dependence and Reinforcement Value
Tracy T Smith1,2, Amy E Wahlquist2,3, Bryan W Heckman1,2
1Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina (MUSC), Charleston, SC.
Summary
Providing electronic cigarettes (e-cigarettes) to current smokers may reduce their dependence on traditional cigarettes. Frequent use and sufficient nicotine concentration in e-cigarettes appear key to this reduction.
Area of Science:
- Public Health
- Addiction Medicine
- Tobacco Control
Background:
- E-cigarette prevalence is increasing, with experts noting fewer toxicants than combustible tobacco.
- Understanding e-cigarette impact on combustible cigarette dependence is crucial for public health.
Purpose of the Study:
- To analyze the effect of e-cigarette sampling on combustible cigarette dependence among current smokers.
- To investigate how e-cigarette use frequency and nicotine concentration influence dependence reduction.
Main Methods:
- Secondary analysis of a randomized pilot trial involving e-cigarette sampling for 3 weeks.
- Participants (non-treatment seeking smokers) completed dependence scales (WISDM) and cigarette purchase tasks.
- Data collected pre-sampling, post-sampling, and at 3-month follow-up.
Main Results:
- E-cigarette recipients showed significantly lower WISDM scores post-sampling and at follow-up.
- Higher e-cigarette use frequency and nicotine concentration predicted greater reductions in WISDM scores.
- E-cigarette sampling significantly decreased the demand parameter Omax, indicating reduced willingness to pay for cigarettes.
Conclusions:
- Current smokers who try e-cigarettes may experience reduced dependence on combustible cigarettes.
- E-cigarette use, particularly with sufficient nicotine and frequent application, shows promise in reducing cigarette dependence.
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