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Psychometric analysis of the Three-Factor Eating Questionnaire-R21: results from a large diverse sample of obese and non-obese participants
- Source :
- International Journal of Obesity. 33:611-620
- Publication Year :
- 2009
- Publisher :
- Springer Science and Business Media LLC, 2009.
-
Abstract
- The 21-item Three-Factor Eating Questionnaire (TFEQ-R21) is a scale that measures three domains of eating behavior: cognitive restraint (CR), uncontrolled eating (UE) and emotional eating (EE).To assess the factor structure and reliability of TFEQ-R21 (and if necessary, refine the structure) in diverse populations of obese and non-obese individuals.Data were obtained from obese adults in a United States/Canadian clinical trial (n=1741), and overweight, obese and normal weight adults in a US web-based survey (n=1275). Confirmatory factor analyses were employed to investigate the structure of TFEQ-R21 using baseline data from the clinical trial. The model was refined to obtain adequate fit and internal consistency. The refined model was then tested using the web-based data. Relationships between TFEQ domains and body mass index (BMI) were examined in both populations.Clinical data indicated that TFEQ-R21 needed refinement. Three items were removed from the CR domain, producing the revised version TFEQ-R18V2 (Comparative Fit Index (CFI)=0.91). Testing TFEQ-R18V2 in the web-based sample supported the revised structure (CFI=0.96; Cronbach's coefficient alpha of 0.78-0.94). Associations with BMI were small. In the clinical study, the CR domain showed a significant and negative association with BMI. On the basis of the web-based survey, it was shown that the relationship between BMI and CR is population-dependent (obese versus non-obese, healthy versus diabetics).In two independent datasets, the TFEQ-R18V2 showed robust factor structure and good reliability. It may provide a useful tool for characterizing UE, CR and EE.
- Subjects :
- Male
Gerontology
Canada
Psychometrics
Endocrinology, Diabetes and Metabolism
Medicine (miscellaneous)
Overweight
Body Mass Index
Sex Factors
Cronbach's alpha
Reference Values
Surveys and Questionnaires
medicine
Humans
Obesity
Nutrition and Dietetics
Feeding Behavior
Middle Aged
Emotional eating
medicine.disease
United States
Clinical trial
Female
medicine.symptom
Factor Analysis, Statistical
Psychology
Three-Factor Eating Questionnaire
Body mass index
Subjects
Details
- ISSN :
- 14765497 and 03070565
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- International Journal of Obesity
- Accession number :
- edsair.doi.dedup.....a0e6ef3a21f0bc8ae1e2b64d5ffe4499