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E-Cigarettes: Dynamic Patterns of Use and Health Effects

Smoking Clinical Trial

Official title:
E-Cigarettes: Dynamic Patterns of Use and Health Effects

Clinical Trial Summary

The proposed research will provide in-depth, longitudinal data, based on real-time reports, which will address key priorities for the FDA including, increased understanding of the relations between electronic cigarette (e-cig) use and 1) nicotine dependence, 2) reductions in combustible cigarette (CC) use, 3) attempts to quit CC use and the success of those attempts, and 4) health-related outcomes such as biomarkers of exposure and carcinogenicity.

Clinical Trial Description

Primary Aim: Characterize e-cig use patterns both acutely and over 2 years and relate them to patterns of CC use (including reduced CC use), nicotine dependence and related variables (e.g., withdrawal suppression), and attempts and success in quitting CC use. Investigators will use ecological momentary assessment (EMA) to obtain fine grained, real-time data on e-cig and CC use. These data will be used to test the hypotheses that increasing and higher levels of e-cig use, measured in real-time, will be negatively related to CC use, nicotine dependence, and CC withdrawal severity and positively related to CC quit attempts and CC cessation success.

Secondary Aim 1: Determine how the use of e-cigs is related to biomarkers of tobacco exposure and cancer risk, and to acute and chronic pulmonary health outcomes. Investigators will examine the relation between e-cig use and cancer biomarkers, exposure biomarkers, and pulmonary function.

Secondary Aim 2: Identify person factors, contextual variables, and patterns of behaviors and symp-toms that predict e-cig and CC use patterns and key outcomes (e.g., CC cessation, health-related outcomes), and identify variables that moderate relations between e-cig use and such outcomes. Investigators will attempt to identify contextual variables and person factors that predict increased e-cig use, decreased CC use (including cessation), reduced nicotine dependence, and significant changes in biomarkers and health outcomes. Further, investigators will identify variables that moderate such relations, revealing factors and events that make changes in e-cig and CC use, and associated outcomes, especially likely. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02527980
Study type Observational
Source University of Wisconsin, Madison
Contact
Status Completed
Phase
Start date October 1, 2015
Completion date July 31, 2019
View Details
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