- Conditions
- Reactions to Warnings, Hookah Smoking
- Interventions
- Ads Only, Ads with text-only health warning labels (HWLs), Ads with text + graphic health warning labels (HWLs)
- Behavioral
- Lead sponsor
- Duke University
- Other
- Eligibility
- 18 Years to 34 Years
- Enrollment
- 2,588 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2021
- U.S. locations
- 1
- States / cities
- Durham, North Carolina
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
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- Conditions
- Screen Time Exposure
- Interventions
- Human-developed negative body image warning, Voluntary warning, Human-developed depression and anxiety warning, Human-developed addiction warning, Human-developed sleep warning, Human-developed mental health harms to young people warning, Human-developed warning that social media has not been proven safe, Control message, California's proposed social media warning, Artificial-intelligence-developed depression and anxiety warning, Artificial-intelligence-developed negative body image warning, Artificial-intelligence-developed addiction warning, Artificial-intelligence-developed sleep warning, Artificial-intelligence-developed mental health harms to young people warning, Artificial-intelligence-developed warning that social media has not been proven safe
- Behavioral
- Lead sponsor
- Stanford University
- Other
- Eligibility
- 13 Years to 29 Years
- Enrollment
- 1,012 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025
- U.S. locations
- 1
- States / cities
- Palo Alto, California