CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 40 enrolled
Drug / intervention
Waterpipe sizeother
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/NCT05705375
NCT05705375N/ACompleted

Understanding the Effect of Waterpipe Size on Smoking Behavior, Toxicant Exposures and Subjective Experiences

The University of Texas at Arlington·interventional·Posted Jan 30, 2023·Updated Nov 5, 2025

In Brief

A clinical study evaluating Waterpipe size for Waterpipe Size. Completed, enrolled 40 participants across 1 site.

Detailed Summary

The goal of this clinical trial is to learn how waterpipe (WP) size affects smoking behavior, toxicant exposure, and subjective experiences in young adult WP smokers (ages 21-39). The main questions it aims to answer are: * Does WP size change puffing behavior? * Does WP size change exposure to nicotine and carbon monoxide? * Does WP size change perceptions of harm, satisfaction, craving, or withdrawal? Participants will smoke small, medium, and large WPs in separate sessions. Researchers will measure puffing behavior, saliva nicotine, exhaled carbon monoxide, and survey responses before and after each session.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsWaterpipe Size
CountriesUnited States
Collaborators--

Timeline

N/ACompletedFinished
2023202420252026
First PostedJan 30, 2023
Enrollment StartApr 22, 2022
Primary CompletionFeb 28, 2024
Study CompletionMar 30, 2024
TodayJul 2, 2026
Enrollment to primary: 1.8 yearsPosted 3.4 years ago

Interventions

Waterpipe sizeother

Participants will have 3 lab visits where they are allocated (random order) to smoke a small waterpipe in one visit, smoke a medium waterpipe in a second visit and smoke a large waterpipe in a third visit.