title: Size, consistency, and stability of stage effects for smoking cessation.
abstract: In the transtheoretical model (TTM), the stage effect is one of the most important determinants of health behavior change. Randomly assigned to 1 of 11 treatment conditions were 4653 smokers. A total of 66 stage effects were possible with 6 for each of the 11 treatment groups. The results suggest that brief stage-matched interventions that help populations progress one stage could produce 75% more abstinence. Interventions that help populations progress two stages could produce 300% more abstinence. The results also support the importance of replicating the stage effects across treatment conditions and over time.
authors.affiliation: University of Rhode Island, 2 Chafee Road, Kingston, RI 02881, USA. jop@uri.edu
authors.forename: James O
authors.initials: JO
authors.lastname: Prochaska
authors.forename: Wayne F
authors.initials: WF
authors.lastname: Velicer
authors.forename: Janice M
authors.initials: JM
authors.lastname: Prochaska
authors.forename: Janet L
authors.initials: JL
authors.lastname: Johnson
mesh_terms: D000328:Adult; D003657:Decision Making; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008962:Models, Theoretical; D016540:Smoking Cessation / Q000379:methods*; D000074606:Smoking Prevention; D016896:Treatment Outcome