CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 164 enrolled
Drug / intervention
Ventilated Cigarette Filter +1 moreother
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04969783
NCT04969783N/ACompleted
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Telehealth Study Assessing the Removal of Filter Ventilation on Smoking Behavior and Biomarkers

Masonic Cancer Center, University of Minnesota·interventional·Posted Jul 21, 2021·Updated May 8, 2025

In Brief

A clinical study evaluating Ventilated Cigarette Filter and Unventilated Cigarette Filter for Tobacco Use. Completed, enrolled 164 participants across 2 sites.

Detailed Summary

The goals of this project are to determine the effects of varying degrees of cigarette filter ventilation on biomarkers of toxicant exposure and smoking behavior and on subjective responses to the cigarette. The primary aim of this study is to examine the effects of unventilated vs ventilated filter cigarettes on urinary biomarkers of toxicant exposure and smoking behavior (e.g., cigarettes per day, intensity of smoking). The secondary objectives are 1) to examine the effects of cigarette filter ventilation on subjective measures such as cigarette dependence and responses to study cigarettes.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsTobacco Use
CountriesUnited States
CollaboratorsOhio State University

Timeline

N/ACompletedFinished
20222023202420252026
First PostedJul 21, 2021
Enrollment StartMay 26, 2021
Primary CompletionFeb 15, 2024
Study CompletionMar 21, 2024
TodayJul 2, 2026
Enrollment to primary: 2.7 yearsPosted 4.9 years ago

Interventions

Ventilated Cigarette Filterother

Ventilated Cigarette Filter

Unventilated Cigarette Filterother

Unventilated Cigarette Filter