Revision and Psychometric Validation of a Survey Tool to Measure Critical Nutrition Literacy in Young Adults
Date of Original Version
Objective: To refine and psychometrically validate the Revised Critical Nutrition Literacy Tool in a young adult sample. Methods: Young adults recruited from 3 universities completed the 11-item Critical Nutrition Literacy Tool claims scale. Exploratory factor analysis, confirmatory factor analysis (CFA), and item response theory were used to validate the Critical Nutrition Literacy Tool. Omega and Cronbach α assessed reliability. Results: A total of 1,718 participants completed the survey. Results from exploratory factor analysis and CFA analyses suggested that a 2-factor, 7-item instrument showed a reasonable fit to the data based on the comparative fit index and standardized root mean residual values, χ2(13) =161.64, P < .001, comparative fit index = 0.90, root mean square error of approximation = 0.11, standardized root mean residual = 0.07. All items loaded well onto the factors from the CFA and item response theory perspectives. The full measure and both factors showed questionable (>0.60) or acceptable (>0.70) internal consistency. Conclusions and Implications: A revised 2-factor instrument capturing (factor 1) critical appraisal of media and (factor 2) evidence-based sources of nutrition information demonstrated sound psychometric characteristics. Further item testing is necessary for different populations, and item development is warranted to capture Internet/social media sources and the relationship among critical nutrition literacy, dietary behaviors, and health outcomes.
Publication Title, e.g., Journal
Journal of Nutrition Education and Behavior
McNamara, Jade, Zachary J. Kunicki, Melissa D. Olfert, Carol Byrd-Bredbenner, and Geoffrey Greene. "Revision and Psychometric Validation of a Survey Tool to Measure Critical Nutrition Literacy in Young Adults." Journal of Nutrition Education and Behavior 52, 7 (2020): 726-731. doi: 10.1016/j.jneb.2020.01.015.