Mobile Sensing of Smoking Behavior

NCT ID: NCT02116283

Last Updated: 2014-11-05

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 2 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2014-03-31
• Study Completion Date: 2014-05-31

Brief Summary

Smokers will use a smartphone app on a smartphone provided for the study that will passively sense and record information about their activities. Information collected from the smartphone app will be used to develop future smartphone apps that will predict when an individual is at risk of smoking.

Detailed Description

Smokers will carry an Android-based smartphone, which they are to use as their own for one month. After using the smartphone for two weeks, they will abstain from smoking for 48 hours. The phone will passively sense and record information from onboard sensors and send that information to a central server. When server based algorithms detect a pattern of signals likely associated with smoking behavior, the smoker will be queried regarding their current state (smoking?, not smoking but likely to in the next 10 minutes?, etc.). Likewise, when smokers are about to smoke but were not queried, they can indicate they are about to smoke. This information will be used to update algorithms using machine learning techniques. As such, in this study investigators will gain knowledge that will increase understanding of antecedents of smoking behavior and improve the accuracy with which smoking risk can be detected.

Conditions

Smoking; Health

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: NONE

Interventions

48 hour smoking abstinence

Participants will maintain smoking abstinence for 48 hours

Intervention Type: BEHAVIORAL

Smartphone

Participants will use an Android-based smartphone as their own for one month

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• generally healthy
• between the ages of 18 and 65
• smoking of at least 10 cig/day of a brand delivering ≥ 0.5 mg nicotine (FTC method) for > 1 year AND an afternoon expired CO concentration >5 ppm (to confirm inhalation) or morning urinary cotinine > 100 ng/mL
• willingness to carry and use a study smartphone as their own for one month

Exclusion Criteria

• inability to attend all required sessions
• use of smokeless tobacco products
• current use of nicotine replacement therapy or other smoking cessation treatment

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Duke University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Joseph McClernon, Ph.D

Role: PRINCIPAL_INVESTIGATOR

Duke University

Locations

Duke University Medical Center

Durham, North Carolina, United States

Countries

United States

Other Identifiers

Pro00044941

Identifier Type: -

Identifier Source: org_study_id