Cited by 91Smoking Behavior and CessationSubstance Abuse Treatment and OutcomesBehavioral Health and Interventions

Improving quit rates of web‐delivered interventions for smoking cessation: full‐scale randomized trial of WebQuit.org versus Smokefree.gov

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Bricker, Jonathan B., Mull, Kristin E., McClure, Jennifer B., Watson, Noreen L., Heffner, Jaimee L.·2018·Addiction

Abstract

Background and aims: Millions of people world‐wide use websites to help them quit smoking, but effectiveness trials have an average 34% follow‐up data retention rate and an average 9% quit rate. We compared the quit rates of a website using a new behavioral approach called Acceptance and Commitment Therapy (ACT; WebQuit.org) with the current standard of the National Cancer Institute's (NCI) Smokefree.gov website. Design: A two‐arm stratified double‐blind individually randomized trial (n = 1319 for WebQuit; n = 1318 for Smokefree.gov) with 12‐month follow‐up. Setting: United States. Participants: Adults (n = 2637) who currently smoked at least five cigarettes per day were recruited from March 2014 to August 2015. At baseline, participants were mean [standard deviation (SD)] age 46.2 years (13.4), 79% women and 73% white. Interventions: WebQuit.org website (experimental) provided ACT for smoking cessation; Smokefree.gov website (comparison) followed US Clinical Practice Guidelines for smoking cessation. Measurements: The primary outcome was self‐reported 30‐day point prevalence abstinence at 12 months. Findings: The 12‐month follow‐up data retention rate was 88% (2309 of 2637). The 30‐day point prevalence abstinence rates at the 12‐month follow‐up were 24% (278 of 1141) for WebQuit.org and 26% (305 of 1168) for Smokefree.gov [odds ratio (OR) = 0.91; 95% confidence interval (CI) = 0.76, 1.10; P = 0.334] in the a priori complete case analysis. Abstinence rates were 21% (278 of 1319) for WebQuit.org and 23% (305 of 1318) for Smokefree.gov (OR = 0.89 (0.74, 1.07; P = 0.200) when missing cases were imputed as smokers. The Bayes factor comparing the primary abstinence outcome was 0.17, indicating ‘substantial’ evidence of no difference between groups. Conclusions: WebQuit.org and Smokefree.gov had similar 30‐day point prevalence abstinence rates at 12 months that were descriptively higher than those of prior published website‐delivered interventions and telephone counselor‐delivered interventions.

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Authors
Bricker, J. B., Mull, K. E., McClure, J. B., Watson, N. L., & Heffner, J. L.
Affiliations
  • University of Washington (US)
  • Fred Hutch Cancer Center (US)
  • Kaiser Permanente Washington Health Research Institute (US)
Corresponding author
Bricker, Jonathan B.
Venue
Addiction
Publisher
Wiley
Published
2018-01-26
Volume
113
Issue
5
Pages
914-923
ISSN
  • 0965-2140 (ISSN-L)
  • 1360-0443
OpenAlex
W2773563881
Cited by
91
References
47
Citations by year
2026: 4 · 2025: 10 · 2024: 8 · 2023: 11 · 2022: 17 · 2021: 14 · 2020: 9 · 2019: 14 · 2018: 4
FWCI
5.46
Type
journal article
Language
en
Open access
Locations
  • Addiction (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Division of Cancer Prevention, National Cancer Institute (R01 CA166646, R01 CA192849)
  • National Institute on Drug Abuse (R01 DA038411)
Topics
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Social Sciences › Psychology › Applied Psychology › Behavioral Health and Interventions
Keywords
smoking cessation, acceptance and commitment therapy, quit rates, abstinence, data retention, follow-up retention, treatment effectiveness comparison, Bayes factor, missing data imputation
MeSH terms
Adult, Double-Blind Method, Female, Humans, Male, Middle Aged, Smoking Cessation, Treatment Outcome, Internet, Acceptance and Commitment Therapy

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