Reactions to Warnings on Hookah Ads
Public ClinicalTrials.gov record NCT03723616. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Exploring Reactions to Health Warnings on Waterpipe Tobacco Ads
Study identification
- NCT ID
- NCT03723616
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- Duke University
- Other
- Enrollment
- 2,588 participants
Conditions and interventions
Conditions
Interventions
- Ads Only Behavioral
- Ads with text-only health warning labels (HWLs) Behavioral
- Ads with text + graphic health warning labels (HWLs) Behavioral
Behavioral
Eligibility (public fields only)
- Age range
- 18 Years to 34 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 4, 2018
- Primary completion
- Mar 25, 2021
- Completion
- Mar 25, 2021
- Last update posted
- Dec 17, 2025
2018 – 2021
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Duke University | Durham | North Carolina | 27710 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03723616, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Dec 17, 2025 · Synced Jul 22, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03723616 live on ClinicalTrials.gov.