Harris-Fry, H;
Paudel, P;
Karn, M;
Mishra, N;
Thakur, J;
Paudel, V;
Harrisson, T;
... Saville, N; + view all
(2016)
Development and validation of a photographic food atlas for portion size assessment in the southern plains of Nepal.
Public Health Nutrition
, 19
(14)
pp. 2495-2507.
10.1017/S1368980016000537.
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Abstract
OBJECTIVE: To develop and validate a photographic food atlas of common foods for dietary assessment in southern Nepal. DESIGN: We created a life-sized photographic atlas of forty locally prepared foods. Between March and June 2014, data collectors weighed portion sizes that respondents consumed during one mealtime and then a different data collector revisited the household the next day to record respondents' estimations of their previous day's intakes using the atlas. Validity was assessed by percentage error, Cohen's weighted kappa (κ w) and Bland-Altman limits of agreement. SETTING: Dhanusha and Mahottari districts in southern Nepal. SUBJECTS: A random sample of ninety-five adults in forty-eight rural households with a pregnant woman. RESULTS: Overall, respondents underestimated their intakes (mean error =-4·5 %). Rice and dal (spiced lentil soup) intakes were underestimated (-14·1 % and -34·5 %, respectively), but vegetable curry intake was overestimated (+20·8 %). Rice and vegetable curry portion size images were significantly reliably selected (Cohen's κ w (se): rice=0·391 (0·105); vegetable curry=0·430 (0·139)), whereas dal images were not. Energy intake over one mealtime was under-reported by an average of 569 kJ (136 kcal; 4·5 % error) using recall compared with the weighing method. CONCLUSIONS: The photographic atlas is a useful tool for field estimation of dietary intake. Average errors were low, and there was 'modest' agreement between weighed and recalled portion size image selection of rice and vegetable curry food items. Error in energy estimation was low but with wide limits of agreement, suggesting that there is scope for future work to reduce error further.
| Type: | Article |
|---|---|
| Title: | Development and validation of a photographic food atlas for portion size assessment in the southern plains of Nepal |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1017/S1368980016000537 |
| Publisher version: | http://doi.org/10.1017/S1368980016000537 |
| Language: | English |
| Additional information: | Copyright © The Authors 2016. The article has been accepted for publication and will appear in revised form, subsequent to peer review and/or editorial input by Cambridge University Press, in Public Health Nutrition Harris-Fry, H; Paudel, P; Karn, M; Mishra, N; Thakur, J; Paudel, V; Harrisson, T; (2016) Development and validation of a photographic food atlas for portion size assessment in the southern plains of Nepal. Public Health Nutrition , 19 (14) pp. 2495-2507 published by Cambridge University Press. The final version of record is available at http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=10250088&fileId=S1368980016000537 |
| Keywords: | Dietary intake, Food atlas, Portion size, Validation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute for Global Health UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health > Population, Policy and Practice Dept |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1478285 |
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