Evaluation of Three Short Dietary Instruments to Assess Fruit and Vegetable Intake: The National Cancer Institute's Food Attitudes and Behaviors Survey

Amy L. Yaroch, Janet Tooze, Frances E. Thompson, Heidi M. Blanck, Olivia M. Thompson, Uriyoan Colón-Ramos, Abdul R. Shaikh, Susanne McNutt, Linda C. Nebeling

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Abstract

Background: Fruit and vegetable (F/V) intake assessment tools that are valid, reliable, brief, and easy to administer and code are vital to the field of public health nutrition. Objective: To evaluate three short F/V intake screeners (ie, a 2-item serving tool, a 2-item cup tool, and a 16-item F/V intake screener) among adults using multiple 24-hour dietary recalls (24-hour recalls) as the reference instrument and evaluate test-retest reliability of the screeners across a 2- to 3-week time period.Design: Validity and reliability study. Participants/setting Two hundred forty-four adults for the validity study and 335 adults for test-retest reliability. Statistical analyses performed Median values for F/V intakes were calculated for the screeners and 24-hour recalls. The Wilcoxon signed rank test was used to compare screeners with the 24-hour recalls. Deattenuated Pearson correlations were reported for validity and intraclass correlation coefficient used for reliability. The estimated median daily servings/cups of F/V for the 2-item serving screener was lower, for the 2-item cup screener was equivalent for men but higher for women, and for the 16-item F/V intake screener were about the same when compared with 24-hour recall values. The deattenuated correlations comparing the 24-hour recalls with the screeners were positive but weak for the 2-item serving screener, and were positive and moderate in strength for the 2-item cup and 16-item F/V intake screeners. The test-retest intraclass correlation coefficients were all positive and fairly strong for all of the screeners.Although dietary screeners offer a more cost-effective, less burdensome way to obtain gross estimates to rank individuals with regard to F/V intake, these methods are not recommended for assessing precise intake levels.

Original languageEnglish (US)
Pages (from-to)1570-1577
Number of pages8
JournalJournal of the Academy of Nutrition and Dietetics
Volume112
Issue number10
DOIs
StatePublished - Oct 1 2012

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Keywords

  • Fruits and vegetables Screener Validity Reliability

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics

Cite this

Yaroch, A. L., Tooze, J., Thompson, F. E., Blanck, H. M., Thompson, O. M., Colón-Ramos, U., Shaikh, A. R., McNutt, S., & Nebeling, L. C. (2012). Evaluation of Three Short Dietary Instruments to Assess Fruit and Vegetable Intake: The National Cancer Institute's Food Attitudes and Behaviors Survey. Journal of the Academy of Nutrition and Dietetics, 112(10), 1570-1577. https://doi.org/10.1016/j.jand.2012.06.002