Validity and Reliability of an Expanded Vegetable Questionnaire Among Elementary School Children. Issue 8 (4th July 2019)

• Record Type: Journal Article
• Authors: Landry, M J; Ranjit, N; Hoelscher, D M; Asigbee, F M; Vandyousefi, S; Ghaddar, R; Davis, J N
• Is Part Of: Current developments in nutrition. Volume 3:Issue 8(2019)
• Publication Date: 2019-07-04
• Subjects: vegetable questionnaire -- vegetable intake -- multiethnic -- children -- validity -- reliability -- elementary; Nutrition -- Periodicals; Nutritional Physiological Phenomena; Nutrition; Periodicals; Periodicals; Fulltext; Internet Resources; Periodicals; 612.3
• DOI: 10.1093/cdn/nzz080
• Languages: English
• ISSNs: 2475-2991

Abstract

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 day's vegetable intake in third- to fifth-grade students. This trial was registered at ClinicalTrials.gov as NCT02668744.