dc.contributor |
Universitat de Barcelona |
dc.contributor.author |
Andrés, Ana |
dc.contributor.author |
Saldaña García, Carmina |
dc.contributor.author |
Gómez Benito, Juana |
dc.date |
2012-07-23T07:52:56Z |
dc.date |
2012-07-23T07:52:56Z |
dc.date |
2011-11-25 |
dc.date |
2012-07-23T07:52:56Z |
dc.identifier.citation |
1662-4025 |
dc.identifier.citation |
600495 |
dc.identifier.uri |
http://hdl.handle.net/2445/28862 |
dc.format |
10 p. |
dc.format |
application/pdf |
dc.language.iso |
eng |
dc.publisher |
S. Karger |
dc.relation |
Versió postprint del document publicat a: DOI: http://dx.doi.org/10.1159/000335135 |
dc.relation |
Obesity Facts, 2011, vol. 4, p. 433-442 |
dc.relation |
http://dx.doi.org/10.1159/000335135 |
dc.rights |
(c) S. Karger., 2011 |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Pes corporal |
dc.subject |
Obesitat |
dc.subject |
Aspectes psicològics |
dc.subject |
Body weight |
dc.subject |
Obesity |
dc.subject |
Psychological aspects |
dc.title |
The transtheoretical model in weight management: Validation of the Processes of Change Questionnaire |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/semantics/acceptedVersion |
dc.description.abstract |
Objective: The processes of change implied in weight management remain unclear. The present study aimed to identify these processes by validating a questionnaire designed to assess processes of change (the P-Weight) in line with the transtheoretical model. The relationship of processes of change with stages of change and other external variables is also examined. Methods: Participants were 723 people from community and clinical settings in Barcelona. Their mean age was 32.07 (SD = 14.55) years; most of them were women (75.0%), and their mean BMI was 26.47 (SD = 8.52) kg/m2. They all completed the P-Weight and the stages of change questionnaire (SWeight), both applied to weight management, as well as two subscales from the Eating Disorders Inventory-2 and Eating Attitudes Test-40 questionnaires about the concern with dieting. Results: A 34-item version of the PWeight was obtained by means of a refinement process. The principal components analysis applied to half of the sample identified four processes of change. A confirmatory factor analysis was then carried out with the other half of the sample, revealing that the model of four freely correlated first-order factors showed the best fit (GFI = 0.988, AGFI = 0.986, NFI = 0.986, and SRMR = 0.0559). Corrected item-total correlations (0.322-0.865) and Cronbach"s alpha coefficients (0.781-0.960) were adequate. The relationship between the P-Weight and the S-Weight and the concern with dieting measures from other questionnaires supported the validity of the scale. Conclusion: The study identified processes of change involved in weight management and reports the adequate psychometric properties of the P-Weight. It also reveals the relationship between processes and stages of change and other external variables. |