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. 2015 Sep;145(9):2185-92.
doi: 10.3945/jn.115.213298. Epub 2015 Jul 29.

Effectiveness of Prompts on Fourth-Grade Children's Dietary Recall Accuracy Depends on Retention Interval and Varies by Gender

Suzanne D Baxter  1 , Albert F Smith  2 , David B Hitchcock  3 , Caroline H Guinn  4 , Julie A Royer  4 , Kathleen L Collins  4 , Alyssa L Smith  4 , Megan P Puryear  4 , Kate K Vaadi  4 , Christopher J Finney  4 , Patricia H Miller  5
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Effectiveness of Prompts on Fourth-Grade Children's Dietary Recall Accuracy Depends on Retention Interval and Varies by Gender

Suzanne D Baxter et al. J Nutr. 2015 Sep.

Abstract

Background: Dietary recall accuracy is related to retention interval (RI) (i.e., time between to-be-reported meals and the interview), and possibly to prompts. To the best of our knowledge, no study has evaluated their combined effect.

Objective: The combined influence of RI and prompts on children's recall accuracy was investigated in this study. Two RIs [short (prior-24-h recall obtained in afternoon) and long (previous-day recall obtained in morning)] were crossed with 4 prompts [forward (distant-to-recent), meal-name (breakfast, lunch, etc.), open (no instructions), and reverse (recent-to-distant)], creating 8 conditions.

Methods: Fourth-grade children (n = 480; 50% girls) were randomly selected from consenting children at 10 schools in 4 districts in a southern state during 3 school years (2011-2012, 2012-2013, and 2013-2014). Each child was observed eating school-provided breakfast and lunch, and interviewed one time under 1 of the 8 conditions. Condition assignment was constrained so that each had 60 children (30 girls). Accuracy measures were food-item omission and intrusion rates, and energy correspondence rate and inflation ratio. For each measure, linear models determined effects of RI, prompt, gender, and interactions (2-way, 3-way); race/ethnicity, school year, and district were control variables.

Results: RI (P values < 0.015) and prompt (P values < 0.005) were significant for all 4 accuracy measures. RI × prompt (P values < 0.001) was significant for 3 accuracy measures (not intrusion rate). Prompt × gender (P = 0.005) was significant for omission rate. RI × prompt × gender was significant for intrusion rate and inflation ratio (P values < 0.001). For the short vs. long RI across prompts and genders, accuracy was better by 33-50% for each accuracy measure.

Conclusions: To obtain the most accurate recalls possible from children, studies should be designed to use a short rather than long RI. Prompts affect children's recall accuracy, although the effectiveness of different prompts depends on RI and varies by gender: at a short RI, the choice of prompts has little systematic effect on accuracy, whereas at a long RI, reverse prompts may elicit the most accurate recalls.

Keywords: 24-h recall; children; gender; prompts; retention interval.

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Conflict of interest statement

Author disclosures: SD Baxter, AF Smith, DB Hitchcock, CH Guinn, JA Royer, KL Collins, AL Smith, MP Puryear, KK Vaadi, CJ Finney, and PH Miller, no conflicts of interest.

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