Validity of photographs for food portion estimation in a rural West African setting

Huybregts, Lieven; Roberfroid, Dominique; Lachat, Carl; Camp, John Van; Kolsteren, Patrick

doi:10.1017/s1368980007000870

Cited by 53 publications

(86 citation statements)

References 17 publications

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“…The small bias for rice is important because it is the staple food and so the main source of energy. Only one other study measured agreement using κ w and it found better agreement than our study (κ w = 0·60 compared with κ w = 0·39) (34) .…”

Section: Discussioncontrasting

confidence: 59%

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Development and validation of a photographic food atlas for portion size assessment in the southern plains of Nepal

Harris‐Fry

Paudel

Karn

et al. 2016

Public Health Nutr.

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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.

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Section: Discussioncontrasting

confidence: 59%

“…To illustrate this, a non-systematic review of studies that did report agreement between weighed and recalled methods is summarised in Table 1 (34)(35)(36)(37)(38)(39) . No studies were available from South Asia and only one study reported LOA in terms of nutrient intakes.…”

mentioning

confidence: 99%

Development and validation of a photographic food atlas for portion size assessment in the southern plains of Nepal

Harris‐Fry

Paudel

Karn

et al. 2016

Public Health Nutr.

View full text Add to dashboard Cite

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“…However, similar high energy intakes have been published before by Mennen et al (2000) who investigated the habitual diet of rural Cameroonian women (3,896 kcal/ day). A photo book could have helped the women to better estimate portion sizes, though, as common in many parts of Africa, most women eat from a common pot, which makes estimates of portion size difficult even with a photo book (Huybregts et al 2008). Notwithstanding these high energy intakes, most of the women did not meet multiple EARs for micronutrient intakes, which would have even been worse in the case of lower energy intake.…”

Section: Discussionmentioning

confidence: 99%

Dietary contribution of Wild Edible Plants to women’s diets in the buffer zone around the Lama forest, Benin – an underutilized potential

et al. 2014

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Rural populations in developing countries face food insecurity and malnutrition despite being surrounded by extraordinary biodiversity. The international community increasingly recognizes the role of agro-biodiversity and Wild Edible Plants (WEPs) in their contributions to managing risk and building resilience and sustainable food systems. Studies on real contributions of WEPs to peoples' diets, however, are uncommon. This study assessed the contribution of WEPs to diets of women living in the buffer zone of the Lama forest in southern Benin. During the long dry season, a cross-sectional survey was carried out on 120 women, covering their knowledge and attitudes towards WEPs and two non-consecutive 24-h recalls of their WEP consumption. Contribution of WEPs to total dietary intake was low due to infrequent use and small portion sizes. The highest nutrient contributions of WEPs measured were for copper (13.9 %) and iron (4.6 %) but the majority of the women had intake values below the Estimated Average Requirements (EARs) for these elements -copper 65 % and iron 91 % Women's dietary diversity was significantly higher among WEP consumers than non-consumers, mainly due to higher consumption of dark green leafy vegetables. WEPs were less consumed as a replacement for other foods but rather as a complement to the diet. The study population generally appreciated WEPs, while some constraints were reported regarding preparation, conservation and commercialization. Before widely promoting WEP consumption in order to exploit their dietary potential, additional investigations are needed into their nutrient composition, cultural and market value, their sustainable harvest levels and possible integration into innovative farming systems.

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“…The latter study showed a tendency to overestimate small portions and underestimate large portions. Huybregts et al (16) assessed the validity of using food photographs depicting foods in four different portion sizes among 15-45-year-old women in rural Burkina Faso. The women were served portions with the same weight as one of the photographs and the following day they were asked to estimate the portion sizes with the aid of the photographs.…”

Section: Discussionmentioning

confidence: 99%

Food photographs in portion size estimation among adolescent Mozambican girls

Korkalo

Erkkola

Fidalgo³

et al. 2012

Public Health Nutr.

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Objective: To assess the validity of food photographs in portion size estimation among adolescent girls in Mozambique. The study was carried out in preparation for the larger ZANE study, which used the 24 h dietary recall method. Design: Life-sized photographs of three portion sizes of two staple foods and three sauces were produced. Participants ate weighed portions of one staple food and one sauce. After the meal, they were asked to estimate the amount of food with the aid of the food photographs. Setting: Zambezia Province, Mozambique. Subjects: Ninety-nine girls aged 13-18 years. Results: The mean differences between estimated and actual portion sizes relative to the actual portion size ranged from 219 % to 8 % for different foods. The respective mean difference for all foods combined was 25 % (95 % CI 212, 2 %). Especially larger portions of the staple foods were often underestimated. For the staple foods, between 62 % and 64 % of the participants were classified into the same thirds of the distribution of estimated and actual food consumption and for sauces, the percentages ranged from 38 % to 63 %. Bland-Altman plots showed wide limits of agreement. Conclusions: Using life-sized food photographs among adolescent Mozambican girls resulted in a rather large variation in the accuracy of individuals' estimates. The ability to rank individuals according to their consumption was, however, satisfactory for most foods. There seems to be a need to further develop and test food photographs used in different populations in Sub-Saharan Africa to improve the accuracy of portion size estimates.

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Validity of photographs for food portion estimation in a rural West African setting

Cited by 53 publications

References 17 publications

Development and validation of a photographic food atlas for portion size assessment in the southern plains of Nepal

Development and validation of a photographic food atlas for portion size assessment in the southern plains of Nepal

Dietary contribution of Wild Edible Plants to women’s diets in the buffer zone around the Lama forest, Benin – an underutilized potential

Food photographs in portion size estimation among adolescent Mozambican girls

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