Journal article
Evaluating the Power of Food Scale in obese subjects and a general sample of individuals: development and measurement properties
International journal of obesity (2005), v 33(8), pp 913-922
Aug 2009
PMID: 19506564
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The Power of Food Scale (PFS) was developed to assess the psychological impact of today's food-abundant environments.
To evaluate the structure of the PFS in diverse populations of obese and nonobese individuals.
Data were obtained from obese adults in a clinical trial for a weight management drug (n=1741), and overweight, obese and normal weight adults in a Web-based survey (n=1275). Exploratory and confirmatory factor analyses were used to investigate the PFS structure using the clinical data. The model developed was then tested using the Web-based data. Relationships between PFS domains and body mass index (BMI) were examined. Logistic regression was used in the Web-based survey to evaluate the association between obesity status and PFS scores.
Clinical data indicated that the scale was best represented by a 15-item version with three subscale domains and an aggregate domain (average of three domains); this was confirmed with data from the Web-based survey (Comparative Fit Index: 0.95 and 0.94 for the clinical and Web-based studies, respectively). Cronbach's alpha for both data sets was high, ranging from 0.81 to 0.91. The relationships between BMI and each domain were weak (and approximately linear). A full category increase in PFS domain score (range 1-5) increased the odds of being obese 1.6-2.3 times.
The 15-item PFS is best represented by three domains and an aggregate domain. The PFS may provide a useful tool to evaluate the effects of obesity treatments on feelings of being controlled by food in an obesogenic food environment.
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Details
- Title
- Evaluating the Power of Food Scale in obese subjects and a general sample of individuals: development and measurement properties
- Creators
- J C Cappelleri - Global Research and Development, Pfizer Inc., New London, CT 06320, USA. joseph.c.cappeller@pfizer.comA G BushmakinR A GerberN K LeidyC C SextonJ KarlssonM R Lowe
- Publication Details
- International journal of obesity (2005), v 33(8), pp 913-922
- Publisher
- Springer Nature; England
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Psychological and Brain Sciences (Psychology)
- Web of Science ID
- WOS:000268799200014
- Scopus ID
- 2-s2.0-68949096761
- Other Identifier
- 991014878062204721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Endocrinology & Metabolism
- Nutrition & Dietetics