'Questions About Quitting' Smoking Cessation Trial

Not Applicable

Completed

• Conditions: Smoking

• Registration Number: NCT00992264
• Lead Sponsor: Kaiser Permanente

Brief Summary

The current study tested the effectiveness of four potentially important tailoring factors (decisional framework, self-efficacy, navigation autonomy, and proactive outreach) in the context of an online motivational intervention for smoking cessation. A fifth factor was originally planned by dropped during intervention development due to confounds with the other planned factors. Information learned from this study will inform how to best design an online interventions for smoking cessation. Participants were recruited from a large, regional U.S. health plan. Using a full factorial design to screen for important main effects and 2-way interactions, participants were randomized to receive one of 16 different experimental factor combinations and followed for one year to assess program impact on smokers' use of empirically-validated cessation treatment and abstinence.

Detailed Description

The current study is a factorial screening experiment, consistent with the Multiphase Optimization Strategy. Participants were randomly assigned to one of 16 different combinations of the 4 experimental factors. Each factor was explored on 2 contrasting levels. Each contrasting factor level was then compared to the other, resulting in 4 analytic arms. Within each arm, all participants (n = 1865) were analyzed to determine the relative effect of each contrasting factor level on the primary and secondary outcomes of interest.

Study Timeline

• Study First Submitted: 2009-10-07
• Study First Submitted QC: 2009-10-08
• Study First Posted: 2009-10-09
• Study Start: 2010-05
• Primary Completion: 2012-11
• Study Completion: 2013-11
• Results First Submitted: 2014-04-04
• Results First Submitted QC: 2014-08-13
• Results First Posted: 2014-08-15
• Status Verified: 2017-10
• Last Update Submitted: 2017-10-11
• Last Update Posted: 2017-10-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 1865

Inclusion Criteria

• Member of Group Health Cooperative
• Currently Smoking at Least 5 Cigarettes/Day
• Access to Email and the Internet
• Read and Write English
• 18 years or older
• Not currently receiving tobacco cessation treatment
• Capable of participating in online and phone surveys

Exclusion Criteria

• Persons will be excluded if they do not meet above criteria

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: FACTORIAL

Primary Outcome Measures

Name	Time	Method
Treatment Utilization for Smoking Cessation	12 months	confirmed use of pharmacotherapy or enrollment in health plan-sponsored counseling program
Smoking Abstinence	12 months	7 day point prevalent abstinence

Trial Locations

Locations (1)

Group Health Research Institute; 🇺🇸 Seattle, Washington, United States