OBJECTIVE: Predictive and external validity was studied among cluster profiles for sun protection behavior within stages from Transtheoretical Model of behavior change using follow-up data. METHODS: Data from participants in a home-based expert system were analyzed. Longitudinal patterns of clusters on the precontemplation, contemplation, and preparation stages of change were assessed. Differences between clusters on membership in action/maintenance stages and scores on the Sun Protection Behavior Scale (SPBS) were measured at 12 and 24 months after intervention. RESULTS: Differences between clusters on stage progression and on scores from the SPBS were found at 12 and 24 months after intervention at all stages. DISCUSSION: Predictive and external validity of sun protection subtypes was established using sun protection variables after a stage-matched intervention. Results provide information to improve interventions for sun protection.
OBJECTIVE: Predictive and external validity was studied among cluster profiles for sun protection behavior within stages from Transtheoretical Model of behavior change using follow-up data. METHODS: Data from participants in a home-based expert system were analyzed. Longitudinal patterns of clusters on the precontemplation, contemplation, and preparation stages of change were assessed. Differences between clusters on membership in action/maintenance stages and scores on the Sun Protection Behavior Scale (SPBS) were measured at 12 and 24 months after intervention. RESULTS: Differences between clusters on stage progression and on scores from the SPBS were found at 12 and 24 months after intervention at all stages. DISCUSSION: Predictive and external validity of sun protection subtypes was established using sun protection variables after a stage-matched intervention. Results provide information to improve interventions for sun protection.
Authors: James O Prochaska; Wayne F Velicer; Joseph S Rossi; Colleen A Redding; Geoffrey W Greene; Susan R Rossi; Xiaowu Sun; Joseph L Fava; Robert Laforge; Brett A Plummer Journal: Health Psychol Date: 2004-09 Impact factor: 4.267
Authors: J O Prochaska; W F Velicer; J S Rossi; M G Goldstein; B H Marcus; W Rakowski; C Fiore; L L Harlow; C A Redding; D Rosenbloom Journal: Health Psychol Date: 1994-01 Impact factor: 4.267
Authors: James O Prochaska; Wayne F Velicer; Colleen Redding; Joseph S Rossi; Michael Goldstein; Judith DePue; Geoffrey W Greene; Susan R Rossi; Xiaowu Sun; Joseph L Fava; Robert Laforge; William Rakowski; Brett A Plummer Journal: Prev Med Date: 2005-08 Impact factor: 4.018