NCT00992264

'Questions About Quitting' Smoking Cessation Trial

Optimizing an Online Motivational Tobacco Cessation Program

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 1,865 (actual)
• Sponsor: Kaiser Permanente · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

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.

Conditions

• Smoking

Interventions

Type	Name	Description
BEHAVIORAL	Message Tone	All participants receive an tailored, online smoking cessation program. Participants in this intervention group either receive content written in a prescriptive tone or a motivational tone.
BEHAVIORAL	Navigation	Persons in this arm either have their ability to navigate the site dictated for them based on their readiness to quit smoking or they are able to freely navigate through the website.
BEHAVIORAL	Proactive Outreach	Persons receive periodic, proactively delivered email reminders to visit the intervention website.
BEHAVIORAL	Testimonials	People receive a personally-tailored testimonial as part of their online smoking cessation program.

Timeline

• Start date: 2010-05-01
• Primary completion: 2012-11-01
• Completion: 2013-11-01
• First posted: 2009-10-09
• Last updated: 2017-10-13
• Results posted: 2014-08-15

Locations

1 site across 1 country: United States