ArticleDiabetology international2016
Validating the use of photos to measure dietary intake: the method used by DialBetics, a smartphone-based self-management system for diabetes patients.
Article in Diabetology international, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
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Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Measurement Properties of Smartphone Approaches to Assess Diet, Alcohol Use, and Tobacco Use: Systematic Review.JMIR mHealth and uHealth · 2022Pooled it
- Article
- From Reflection to Action: Combining Machine Learning with Expert Knowledge for Nutrition Goal Recommendations.Proceedings of the SIGCHI conference on human factors in computing systems. CHI Conference · 2021Article
- Mobile Ecological Momentary Diet Assessment Methods for Behavioral Research: Systematic Review.JMIR mHealth and uHealth · 2018Review
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Authors and funding
8 authors.
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Abstract
backgroundThe accuracy of estimating nutritional intake and balance from photos of meals has not been well documented. However, DialBetics (DB)-our diabetes self-management support system, which is based on information and communication technologies-relies on the photos that type 2 diabetes patients take of their meals with smartphones. Therefore, we designed a study to evaluate this accuracy.
methodsWe prepared 61 dishes whose actual amount/value of total energy and each nutrient were known: protein, fat, carbohydrates, dietary fiber and salt. Their balance-the protein-fat-carbohydrate ratio-was also known, constituting the weighed food record (WFR). Smartphone photos of those dishes were taken, and three registered dietitians evaluated each dish from those photos, naming the dish and estimating the amount of each nutrient in it, plus the dish's balance. These estimated DB and WFR values were compared using the Wilcoxon matched-pairs rank-sum test; intraclass correlation coefficients (ICCs) were calculated. Agreement between the two values for each dish was assessed by Bland-Altman analysis.
resultsThere were significant ICCs-0.84 for fat (95 % confidence interval 0.75-0.90) and 0.93 for carbohydrates (0.88, 0.96)-but no statistically significant differences between DB and WRF for other nutrients or balance. Bland-Altman analysis showed that differences between the two values were random and not biased against nutrient intake; 95 % limits of agreement were acceptable although wide (energy -198 to 210 kcal/dish; carbohydrates -22.7 to 25.8 g/dish).
conclusionDB's diet evaluation by photos is reliable with apparent potential for assessing diets.
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