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The Efficacy and Safety of Electronic Cigarettes: a 5-year Follow-up Study

Multicentric 5-year Follow-up Study to Assess the Efficacy of E-cigarettes as a Tool for Smoking Cessation and to Compare the Risk of Smoking-related Diseases Among Electronic and Traditional Cigarette Smokers, and Smokers of Both.

Status
UNKNOWN
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01785537
Enrollment
1050
Registered
2013-02-07
Start date
2013-10-31
Completion date
2019-12-31
Last updated
2017-05-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cancer of the Bladder, Cancer of the Lung, Cancer of the Stomach, Cardiovascular Diseases, Chronic Obstructive Pulmonary Diseases

Keywords

e-cigarette smoking, cigarette smoking, cardiovascular disease, hospitalization, chronic obstructive pulmonary diseases, observational study, efficacy, safety

Brief summary

The main aim of this multicentric 5-year follow-up study is to evaluate for the first time the long-term efficacy and safety (in terms of smoking-related serious diseases requiring hospitalization) of e-cigarette smoking, comparing its health effects with those of traditional cigarette smoking and mixed electronic and traditional cigarette smoking. The study will also permit to evaluate, over a 5-year follow-up, the self-reported quality of life, and the reported adverse events according to current and past smoking habit. Finally, the study will also explore the long-term adherence to e-cigarette smoking and its efficacy of e-cigarettes in reducing and/or quitting traditional cigarette smoking.

Interventions

None listed

Sponsors

University of Roma La Sapienza
CollaboratorOTHER
Catholic University of the Sacred Heart
CollaboratorOTHER
University of Turin, Italy
CollaboratorOTHER
University of Catania
CollaboratorOTHER
Mario Negri Institute for Pharmacological Research
CollaboratorOTHER
Università degli Studi 'G. d'Annunzio' Chieti e Pescara
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
30 Years to 80 Years
Healthy volunteers
Yes

Inclusion criteria

* resident into the Abruzzo and Lazio Region * aged between 30 and 75 years; * smoker of e-cigarettes (inhaling at least 50 puffs per week) containing nicotine since six or more months (E-cigarettes only Group); * smoker of at least one traditional cigarette per day since six or more months (Traditional cigarettes only Group); * smoker of both electronic and traditional cigarettes (at least one per day) since six or more months (Mixed Group).

Exclusion criteria

* illicit drug use, * breastfeeding or pregnancy, * major depression or other psychiatric conditions, * severe allergies, * active antihypertensive medication, * angina pectoris, * past episodes of major cardiovascular diseases (myocardial infarction, stroke/TIA, congestive heart failure, COPD, cancer of the lung, esophagus, larynx, oral cavity, bladder, pancreas, kidney, stomach, cervix, and myeloid leukemia.

Design outcomes

Primary

MeasureTime frameDescription
Traditional smoking cessation rate5 yearsPercentage of subjects that were current (in TC and Mixed groups) or former (in EC group) smokers reporting sustained smoking abstinence from traditional cigarette smoking at 60 months. Smoking abstinence is defined as complete abstinence from tobacco smoking (not even a puff) for the 30 days period prior to the visit. This outcome will be self-reported and checked using CO analyzer after breath.
Change from baseline in the number of traditional cigarette smoked6, 12, 24, 36 and 60 months.Change in the average self-reported number of traditional cigarette smoked per day.

Secondary

MeasureTime frameDescription
Number of hospitalizations for cardiovascular diseases5 yearsMean number of hospital admissions for cardiovascular diseases. Each admissions of the same subject will be counted.
Number of hospitalizations for smoking-related cancers5 yearsMean number of hospital admissions for cancer of the lung, esophagus, larynx, oral cavity, bladder, pancreas, kidney, stomach, cervix, and myeloid leukemia. Each admissions of the same subject will be counted.
Change from baseline in self-reported quality of life6, 12, 24 and 36 monthsChange in the average quality of life according to EuroQol EQ-D3.
Time to hospitalization for cardiovascular diseases, COPD and smoking-related cancer.5 yearTime to hospital admission for one of the followings: cardiovascular diseases, chronic obstructive pulmonary diseases, cancer of the lung, esophagus, larynx, oral cavity, bladder, pancreas, kidney, stomach, cervix, and myeloid leukemia. Repeated admissions of the same subject will be counted once and the subject will be censored at the date of the first admission.
Rate of subjects with smoking-related hospitalizations5 yearsPercentage of subjects who had a hospital admission for one of the followings: cardiovascular diseases, chronic obstructive pulmonary diseases, cancer of the lung, esophagus, larynx, oral cavity, bladder, pancreas, kidney, stomach, cervix, and myeloid leukemia. Repeated admissions of the same subject will be counted once.
Adherence to e-cigarette smoking5 yearsNumber of months of continued e-cigarette smoking in groups EC and Mixed.
Smoking abstinence3 yearsPercentage of subjects reporting sustained smoking abstinence from traditional cigarette smoking. Smoking abstinence is defined as complete abstinence from tobacco smoking (not even a puff) for the 30 days period prior to the visit.
Traditional and electronic smoking (overall smoking) cessation1 yearPercentage of subjects in all groups reporting sustained smoking abstinence from both traditional and electronic cigarette smoking at 12 months. Smoking abstinence is defined as complete abstinence from tobacco or electronic smoking (not even a puff) for the 30 days period prior to the visit.
Number of Participants with Adverse Events as a Measure of Safety and tolerability5 yearsSelf-reported side effects as measured by VAS and a structured report form.
Number of smoking-related hospitalizations5 yearsMean number of hospital admissions for one of the followings: cardiovascular diseases, chronic obstructive pulmonary diseases, cancer of the lung, esophagus, larynx, oral cavity, bladder, pancreas, kidney, stomach, cervix, and myeloid leukemia. Each admissions of the same subject will be counted.

Countries

Italy

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 22, 2026