Validation of the Diet Satisfaction Questionnaire: a new measure of satisfaction with diets for weight management

B. L. James, E. Loken, L. S. Roe, K. Myrissa, C. L. Lawton, L. Dye, B. J. Rolls

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Objective: The Diet Satisfaction Questionnaire was developed to fill the need for a validated measure to evaluate satisfaction with weight-management diets. This paper further develops the questionnaire, examining the factor structure of the original questionnaire, cross-validating a revised version in a second sample and relating diet satisfaction to weight loss during a 1-year trial. Methods: The 45-item Diet Satisfaction Questionnaire (DSat-45) uses seven scales to assess characteristics that influence diet satisfaction: Healthy Lifestyle, Convenience, Cost, Family Dynamics, Preoccupation with Food, Negative Aspects, and Planning and Preparation. It was administered five times during a 1-year weight-loss trial (n = 186 women) and once as an online survey in a separate sample (n = 510 adults). Confirmatory factor analysis was used to assess and refine the DSat-45 structure, and reliability and validity data were examined in both samples for the revised questionnaire, the DSat-28. Associations were examined between both DSat questionnaires and weight loss in the trial. Results: Internal consistency (reliability) was moderate for the DSat-45. Confirmatory factor analysis showed improved fit for a five-factor structure, resulting in the DSat-28 that retained four of the original scales and a shortened fifth scale. This revised questionnaire was reliable in both samples. Weight loss across the year-long trial was positively related to satisfaction with Healthy Lifestyle, Preoccupation with Food, and Planning and Preparation in both versions of the questionnaire. Conclusions: Measures of reliability and validity were improved in the more concise DSat-28 compared to the DSat-45. This shorter measure should be used in future work to evaluate satisfaction with weight-management diets.

Original languageEnglish (US)
Pages (from-to)506-514
Number of pages9
JournalObesity Science and Practice
Volume4
Issue number6
DOIs
StatePublished - Dec 2018

All Science Journal Classification (ASJC) codes

  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics

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