TY - JOUR
T1 - Revision and Psychometric Validation of a Survey Tool to Measure Critical Nutrition Literacy in Young Adults
AU - McNamara, Jade
AU - Kunicki, Zachary J.
AU - Olfert, Melissa D.
AU - Byrd-Bredbenner, Carol
AU - Greene, Geoffrey
N1 - Publisher Copyright:
© 2020 Society for Nutrition Education and Behavior
PY - 2020/7
Y1 - 2020/7
N2 - 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.
AB - 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.
KW - instrument validation
KW - nutrition literacy
KW - young adults
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U2 - 10.1016/j.jneb.2020.01.015
DO - 10.1016/j.jneb.2020.01.015
M3 - Article
C2 - 32151440
AN - SCOPUS:85081259029
SN - 1499-4046
VL - 52
SP - 726
EP - 731
JO - Journal of Nutrition Education and Behavior
JF - Journal of Nutrition Education and Behavior
IS - 7
ER -