An Innovative Conversational Agent (Quitbot) for Smoking Cessation
Public ClinicalTrials.gov record NCT04308759. 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
Full Scale Randomized Trial of an Innovative Conversational Agent for Smoking Cessation (QuitBot)
Study identification
- NCT ID
- NCT04308759
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- Fred Hutchinson Cancer Center
- Other
- Enrollment
- 1,647 participants
Conditions and interventions
Conditions
Interventions
- Control Smoking Cessation Program Other
- Experimental Smoking Cessation Program Other
Other
Eligibility (public fields only)
- Age range
- 18 Years and older
- 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
- Jul 23, 2022
- Primary completion
- Apr 30, 2025
- Completion
- Apr 30, 2026
- Last update posted
- May 27, 2025
2022 – 2026
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Fred Hutch/University of Washington Cancer Consortium | Seattle | Washington | 98109 | — |
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 NCT04308759, 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 May 27, 2025 · Synced May 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04308759 live on ClinicalTrials.gov.