NCT02416986

Brief Summary

The goal of this study is to evaluate the effects of exposure to standard smoking environments on ability to resist smoking as measured with a Delay to Smoking Task. The results of this study will inform whether the Delay to Smoking Task is a sensitive measure for evaluating environment-provoked craving and smoking behavior.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
41

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Oct 2014

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2014

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

April 8, 2015

Completed
7 days until next milestone

First Posted

Study publicly available on registry

April 15, 2015

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2015

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2015

Completed
Last Updated

January 31, 2017

Status Verified

August 1, 2016

Enrollment Period

9 months

First QC Date

April 8, 2015

Last Update Submit

January 30, 2017

Conditions

Outcome Measures

Primary Outcomes (3)

  • Change in self-report craving measured by the cue-exposure rating scale

    at 0 minutes, +30 minutes, +60 minutes and following first cigarette

  • Difference in number of subjects who initiate smoking during the smoking cue Delay to Smoking Task compared to the nonsmoking cue Delay to Smoking Task

    If participant initiates smoking a cigarette during the Delay to Smoking Task

    following start of Delay to Smoking Task, up to 60 minutes

  • Number of minutes to first puff

    Number of minutes to first puff of cigarette will be recorded for participants that initiate smoking

    following start of Delay to Smoking Task, up to +60 minutes

Interventions

Participants will be presented with an unlit cigarette of their brand and an opportunity to initiate ad lib smoking at any time during the 60-minute task. During this period, participants will be allowed to read books or magazines, but will hear a tone alerting them to view cues (standard smoking environments) for the final minute of each 6-minute period. A monetary reinforcer will be provided for each 6-minute period that a participant resists smoking. Once participants stop the task they can choose to smoke as much or a little as they want for the next 30 minutes. Participants will be provided with a smoking tab. Each cigarette they light will cost them from their tab.

Participants will be presented with an unlit cigarette of their brand and an opportunity to initiate ad lib smoking at any time during the 60-minute task. During this period, participants will be allowed to read books or magazines, but will hear a tone alerting them to view cues (standard nonsmoking environments) for the final minute of each 6-minute period. A monetary reinforcer will be provided for each 6-minute period that a participant resists smoking. Once participants stop the task they can choose to smoke as much or a little as they want for the next 30 minutes. Participants will be provided with a smoking tab. Each cigarette they light will cost them from their tab.

Eligibility Criteria

Age18 Years - 55 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • generally healthy
  • between the ages of 18 and 55
  • smoking an average of 5 cigarettes per day for at least one year
  • breath CO level \> 8 ppm (if ≤ 8 ppm, then NicAlert Strip = 6)
  • no interest in quitting smoking for the duration of time required for the experiment

You may not qualify if:

  • inability to attend all required experimental sessions
  • use of psychoactive medications
  • use of smokeless tobacco
  • current alcohol or drug abuse
  • use of illegal drugs as measured by urine drug screen (excluding marijuana)
  • current use of nicotine replacement therapy or other smoking cessation treatment
  • Blood Alcohol Level (BAL) \> 0.00
  • use of other tobacco products or e-cigarettes more than 9 days in the past 30 days

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Duke University Medical Center

Durham, North Carolina, 27705, United States

Location

MeSH Terms

Conditions

Smoking

Condition Hierarchy (Ancestors)

Behavior

Study Officials

  • Joseph McClernon, PhD

    Duke University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 8, 2015

First Posted

April 15, 2015

Study Start

October 1, 2014

Primary Completion

July 1, 2015

Study Completion

December 1, 2015

Last Updated

January 31, 2017

Record last verified: 2016-08

Locations