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Nicotine Tob Res. 2015 Feb;17(2):180-5. doi: 10.1093/ntr/ntu061. Epub 2014 May 13.

Effects of duration of electronic cigarette use.

Author information

1
Department of Psychology, Oklahoma State University, Stillwater, OK; Oklahoma Tobacco Research Center, Oklahoma City, OK; william.lechner@okstate.edu.
2
Department of Psychology, Oklahoma State University, Stillwater, OK; Oklahoma Tobacco Research Center, Oklahoma City, OK;
3
Oklahoma Tobacco Research Center, Oklahoma City, OK; University of Oklahoma Health Sciences Center , Oklahoma City, OK.

Abstract

INTRODUCTION:

This study examined the effect of duration electronic cigarette (e-cigarette) use on e-cigarette dependence, frequency of use, and strength of nicotine solution as well as number of cigarettes smoked per day.

METHODS:

Individuals were recruited at e-cigarette retail locations in a large Midwestern metropolitan city of the United States in July 2013. A total of 159 participants completed a brief 29-item self-report measure that assessed behaviors and perceptions of use. The mean age of the participants was 35.8 years; 84.4% were White, and 53.7% were male.

RESULTS:

Increased duration of e-cigarette use was associated with fewer cigarettes smoked per day and differing patterns of dependence to e-cigarettes contingent upon smoking history. Additionally, increased duration of e-cigarette use was associated with increased frequency of use; however, this finding became nonsignificant when current tobacco cigarette use was accounted for, suggesting that individuals may increase e-cigarette use frequency as they decrease cigarette use. Overall, e-cigarette users tended to decrease the strength of nicotine in their e-cigarette products regardless of duration of use.

CONCLUSIONS:

Although preliminary in nature, this study identifies several factors that are important to consider when examining the effects of prolonged e-cigarette use. The implications of the current results should be informative to future studies that examine these variables in longitudinal designs.

PMID:
24827788
PMCID:
PMC4830219
DOI:
10.1093/ntr/ntu061
[Indexed for MEDLINE]
Free PMC Article

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