ArticleJournal of human nutrition and dietetics : the official journal of the British Dietetic Association2025
Validity of Weighed and Digital Photography Diet Estimation Study in a Childcare Setting.
Article in Journal of human nutrition and dietetics : the official journal of the British Dietetic Association, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Validity of Weighed and Digital Photography Diet Estimation Study in a Childcare Setting.Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2025Article
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7 authors.
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Abstract
introductionEstimating food intake in children is a critical part of obesity prevention and nutrition intervention studies. Accurate and convenient methods to measure food intake among preschool children attending early childcare centers (ECCs) are lacking and digital photography may be a convenient option but needs to be validated in the childcare setting. This pilot study assessed the validity of weighed and digital photography plate waste methods.
methodsWeighed and digital photography plate waste methods were used to estimate food intake during lunch for three consecutive days. Pre-consumption weight of each food was measured in grams. Weighed foods were assembled on a tray and photos were taken. Post-consumption weights and photos were taken for comparison. Two trained research assistants independently estimated food consumption at 10% intervals for the digital photography method; differences in pre- and post-weights were used for weighed method. Food consumption was measured by the difference in grams or estimated percentage in pre-and post-meal weights and photos, respectively. Validity was measured using linear mixed models and Bland Altman regressions to assess differences between digital photography and weighed measurements.
resultsParticipants were 41 children (mean age 3.86 ± 0.51, 84% Hispanic/Latino, 58.5% females) enrolled in two Head Start centers. Linear mixed model assessment found no significant difference between macro- or micronutrients, or food groups between the two methods. Bland Altman regression revealed a high level of agreement between weighed and digital photography methods for macronutrients, micronutrients, and food groups.
conclusionWeighed and digital photography plate waste methods yield similar results, and both are valid methods to assess food intake in pre-school aged children to aid in intervention studies along with evaluating menu quality. Choice of assessment methods depends on budget, time, equipment, expertise, and training.
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