Research article Topical Sections

Validity and reproducibility of food photographic estimation for evaluating meals in evacuation shelters

  • Received: 12 October 2022 Revised: 29 January 2023 Accepted: 21 February 2023 Published: 07 March 2023
  • Objective

    The primary goal was to evaluate the validity of food photographic estimation for nutritional assessment compared with weighed food record (WFR).

    Methods

    We evaluated the validity and reproducibility of photographic estimation of foods provided in evacuation shelters. We analyzed 35 meals served at 12 shelters in Kumamoto Prefecture in Japan, affected by a heavy rain disaster in 2020. In this context, we compared 21 senior students' portion size estimation by food photographs to WFR. In addition, we assigned five meals for each of the 21 senior students, and the same meal photograph was estimated by three students to test reproducibility.

    Results

    No statistically significant difference was detected between the two methods regarding energy, the total grams of meal, the protein, and vitamins B1, B2, and C, except for salt. In addition, the students who never self-cooked underestimated the total grams.

    Conclusion

    Food photographic estimation could simplify the nutritional assessment in evacuation shelters. However, unclear photographs and food items served by weight could weaken the estimation accuracy. According to previous studies and the applied postestimation questionnaire, photographs taken from specified angles and reference food photobooks for portion size estimation may improve accuracy.

    Citation: Haruka Kobayashi, Noriko Sudo, Nobuyo Tsuboyama-Kasaoka, Ikuko Shimada, Keiichi Sato. Validity and reproducibility of food photographic estimation for evaluating meals in evacuation shelters[J]. AIMS Public Health, 2023, 10(1): 169-182. doi: 10.3934/publichealth.2023013

    Related Papers:

  • Objective

    The primary goal was to evaluate the validity of food photographic estimation for nutritional assessment compared with weighed food record (WFR).

    Methods

    We evaluated the validity and reproducibility of photographic estimation of foods provided in evacuation shelters. We analyzed 35 meals served at 12 shelters in Kumamoto Prefecture in Japan, affected by a heavy rain disaster in 2020. In this context, we compared 21 senior students' portion size estimation by food photographs to WFR. In addition, we assigned five meals for each of the 21 senior students, and the same meal photograph was estimated by three students to test reproducibility.

    Results

    No statistically significant difference was detected between the two methods regarding energy, the total grams of meal, the protein, and vitamins B1, B2, and C, except for salt. In addition, the students who never self-cooked underestimated the total grams.

    Conclusion

    Food photographic estimation could simplify the nutritional assessment in evacuation shelters. However, unclear photographs and food items served by weight could weaken the estimation accuracy. According to previous studies and the applied postestimation questionnaire, photographs taken from specified angles and reference food photobooks for portion size estimation may improve accuracy.



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    Acknowledgments



    This study received the Health Labour Sciences Research Grant: [number 20FA2001] (principal investigator: Noriko Sudo). We are grateful to all those who voluntarily participated in this study and the prefectural government of Kumamoto for providing us with this valuable data.

    Conflict of interest



    All authors declare no conflicts of interest in this paper.

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