CI

At a glance

ClinicalIndex Comparison Record
N/ACompleted· 1,647 enrolled
Drug / intervention
Experimental Smoking Cessation Program +1 moreother
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/NCT04308759
NCT04308759N/ACompleted
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Full Scale Randomized Trial of an Innovative Conversational Agent for Smoking Cessation (QuitBot)

Fred Hutchinson Cancer Center·interventional·Posted Mar 16, 2020·Updated May 22, 2026

In Brief

A clinical study evaluating Experimental Smoking Cessation Program and Control Smoking Cessation Program for Smoking &Amp; Tobacco Cessation. Completed, enrolled 1,647 participants across 1 site.

Detailed Summary

This phase III trial compares two remote digital smoking cessation programs to see how well they work for quitting smoking.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsSmoking &Amp; Tobacco Cessation
CountriesUnited States
CollaboratorsNational Cancer Institute (NCI)

Timeline

N/ACompletedFinished
202120222023202420252026
First PostedMar 16, 2020
Enrollment StartJul 24, 2022
Primary CompletionMay 1, 2025
Study CompletionApr 8, 2026
TodayJul 2, 2026
Enrollment to primary: 2.8 yearsPosted 6.3 years ago

Interventions

Experimental Smoking Cessation Programother

Participate in Quitbot experimental cessation program

Control Smoking Cessation Programother

Participate in Quitbot control cessation program