CClinicalTrials.gg
CompletedNCT02515500Updated Jan 13, 2020

Cigarette Reduction Using the Quitbit Digital Lighter and Mobile Application for Smoking Cessation: a Randomized Controlled Trial

An interventional study of Gradual Cessation and Gradual Cessation w/ Quitbit in Smoking Cessation, sponsored by University of California, San Francisco. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-01-13.

Sponsored by University of California, San Francisco · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
124
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The study is designed to evaluate the efficacy of a cigarette reduction intervention using a novel device called the Quitbit, a digital lighter paired with a smartphone mobile application, to enhance self-regulatory techniques for reducing cigarettes smoked per day toward cessation.

02

Conditions studied

  • Smoking Cessation

Keywords

  • cigarette reduction
  • digital health
  • mobile health
  • technology
  • Quitbit
  • mHealth
  • smoking cessation
  • quit smoking
  • self-regulation
03

In context

Lead sponsor

University of California, San Francisco is the lead sponsor of 2,132 studies on the registry; 375 are open to participants now.

Of its 262 completed or terminated interventional studies of FDA-regulated products, 196 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • 18 years of age
  • cigarette smoker
  • wanting to quit in the next 30 days
  • preference to quit gradually (vs. abruptly) or having no preference
  • access to an iPhone (iOS only)
  • completion of a run-in period

Exclusion criteria

Exclusion Criteria:

  • no major change in number of cigarettes per day in the past month (+/- 20%)
  • no major health diagnoses that could impact study attrition
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
124 participants (actual)

Study arms

  • Active comparator
    Gradual Cessation

    Behavioral: Gradual Cessation

  • Experimental
    Gradual Cessation w/ Quitbit

    Behavioral: Gradual Cessation w/ Quitbit

Interventions

  • BehavioralGradual Cessation

    Also known as: Cigarette Reduction

  • BehavioralGradual Cessation w/ Quitbit

    Also known as: Cigarette Reduction w/ Quitbit

06

What researchers measure

Primary outcomes

  1. Saliva cotinine level

    Time frame: 6 Months

07

Study locations

1 site
  • University of California, San Francisco
    San Francisco, California 94122, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 13, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02515500
Lead sponsor
University of California, San Francisco
Collaborators
Quitbit, Inc.
Responsible party
Sponsor
First posted
Aug 4, 2015
Start date
Jun 2016
Primary completion
Jun 2018
Completion
Jun 2018
Last update
Jan 13, 2020

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2020. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion