1. Validity and Reliability of an Expanded Vegetable Questionnaire Among Elementary School Children.
- Author
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Landry, M, Ranjit, N, Hoelscher, D, Asigbee, F, Vandyousefi, S, Ghaddar, R, and Davis, J
- Subjects
children ,elementary ,multiethnic ,reliability ,validity ,vegetable intake ,vegetable questionnaire - Abstract
BACKGROUND: The purpose of this study was to expand the School Physical Activity and Nutrition questionnaire to include a greater variety of vegetables and to evaluate the relative validity and reliability of these revised items. OBJECTIVES: This study utilized 2 convenience samples of third to fifth graders for an analysis: validity (n = 70) and reliability (n = 76). Validity was assessed by comparing questionnaire items with vegetable intake reported from a 24-hour dietary recall covering the same reference period. Reliability estimates were assessed via same-day test-retest. RESULTS: Agreement correlations ranged from 0.35 to 0.71. Kappa statistics varied from 0.16 to 0.66. Percentage agreements ranged from 57% to 87%. Test-retest Spearman coefficients were greater than 0.50 for 6 items, weighted Kappa values were greater than 0.40 for all 7 items, and percentage agreement exceeded 75% for 5 items. CONCLUSIONS: Results suggest that the questionnaire is a valid and reliable measure of the previous days vegetable intake in third- to fifth-grade students. This trial was registered at ClinicalTrials.gov as NCT02668744.
- Published
- 2019