CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 2,588 enrolled
Drug / intervention
Ads Only +2 morebehavioral
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/NCT03723616
NCT03723616N/ACompleted
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Exploring Reactions to Health Warnings on Waterpipe Tobacco Ads

Duke University·interventional·Posted Oct 29, 2018·Updated Dec 18, 2025

In Brief

A clinical study evaluating Ads Only, Ads with text-only health warning labels (HWLs), and 1 other intervention for Reactions to Warnings and Hookah Smoking. Completed, enrolled 2,588 participants across 1 site.

Detailed Summary

The purpose of this study is to help us better understand what kinds of waterpipe tobacco advertisements appeal to young adults as well as to help evaluate and create health warnings that can be placed on waterpipe tobacco advertisements to inform young adults of the risks associated with smoking hookah tobacco.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsReactions to Warnings, Hookah Smoking
CountriesUnited States
Collaborators--

Timeline

N/ACompletedFinished
20192020202120222023202420252026
First PostedOct 29, 2018
Enrollment StartOct 5, 2018
Primary CompletionMar 26, 2021
TodayJul 2, 2026
Enrollment to primary: 2.5 yearsPosted 7.7 years ago

Interventions

Ads Onlybehavioral

Participants will view 2 ads without replacement.

Ads with text-only health warning labels (HWLs)behavioral

Participants will view HWLs in one of four domains: long- and short-term health events, toxicants, and addiction; participants viewed two HWLs within each domain - there were two HWLs per domain. The text HWLs were placed randomly on two ads out of the possible four ad themes without replacement. Thus, participants viewed two HWLs within the same domain, with each warning being placed on a different ad.

Ads with text + graphic health warning labels (HWLs)behavioral

Participants will view HWLs in one of four domains: long- and short-term health events, toxicants, and addiction; participants viewed two HWLs within each domain - there were two HWLs per domain. The text + graphic HWLs were placed randomly on two ads out of the possible four ad themes without replacement. Thus, participants viewed two HWLs within the same domain, with each warning being placed on a different ad.