Test-retest reliability and convergent validity of two brief fruit and vegetable intake questionnaires among school-aged children

Youjie Zhang, Marla Reicks

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Reliable, valid, and easy-to-implement tools are required to assess children’s fruit and vegetable intake as part of behavior change-focused nutrition education programs; however, the availability of such instruments is limited. The purpose of this study was to examine the reproducibility and accuracy of two brief fruit and vegetable intake questionnaires among 8- to 12-year-old children. A total of 109 participants from diverse racial/ethnic groups were recruited from urban afterschool programs. The results of two short questionnaires (food web and plate activity) were reproducible between two repeated measures conducted one week apart. Compared to a reference 24-h dietary recall, the food web questionnaire had acceptable convergent validity for assessing children’s fruit intake (kappa: 0.51; r = 0.53, p < 0.001), but limited validity for assessing children’s vegetable intake (kappa: 0.43; r = 0.33, p < 0.003). Children tended to overestimate intake when visualizing fruit and vegetable consumption via the plate activity questionnaire, indicating that this questionnaire was not a valid tool to assess children’s fruit and vegetable consumption at dinner meals. Children’s report of fruit intake via the food web questionnaire may be a useful indicator of program success in improving fruit intake.

Original languageEnglish (US)
Article number707
JournalNutrients
Volume9
Issue number7
DOIs
StatePublished - Jul 2017

Bibliographical note

Funding Information:
The authors sincerely appreciated participants? time and contribution. The authors would like to thank Lori Roth-Yousey and Caitlyn Shoemaker for their assistance in data collection, data entry and coding. This study was supported by the University of Minnesota Extension.

Publisher Copyright:
© 2017 by the authors. Licensee MDPI, Basel, Switzerland.

Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

Keywords

  • Assessment
  • Children
  • Fruit
  • Survey and questionnaire
  • Validation
  • Vegetable

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