Accuracy in the estimation of food servings against the portions in food photographs

M-L, Ovaskainen; Paturi, Merja; Reinivuo, Heli; Ml, Hannila; Sinkko, Harri; Lehtisalo, Jenni; Pynnönen-Polari, O; Männistö, Satu

doi:10.1038/sj.ejcn.1602758

Cited by 112 publications

(166 citation statements)

References 19 publications

(53 reference statements)

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“…Some studies have evaluated the errors related to perception of foods in photographs while assessing the portion of foods presented to the participant (3,(6)(7)(8)13,14) . They speculate that assessment of portion size would not be biased by factors such as participants' unwillingness to divulge what they have eaten (1,15) .…”

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confidence: 99%

Development and evaluation of a photographic atlas as a tool for dietary assessment studies in Middle East cultures

Tueni

Mounayar

Birlouez‐Aragon³

2012

Public Health Nutr.

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Objective: To assess the errors between estimates of amounts based on photographs and actual quantities of food presented to adults or eaten on the previous day. Design: A photographic atlas was constructed by taking digital photographs of three pre-weighed portion sizes of 212 traditional Lebanese dishes. In a first approach, ten portions of real pre-weighed foods were assessed using the photographic atlas. In a second approach, the participants weighed all foods consumed at one meal and recalled the amount of food that was eaten the previous day using the photographic atlas. Differences between actual quantities and estimation were assessed using a signed rank test (P , 0?05). Spearman's correlation coefficients and bias (Bland-Altman plot) between the methods were calculated. Setting: Lebanese university canteen and Lebanese homes. Subjects: Forty adults (twenty males, twenty females) completed the first protocol and fifty adults (twenty-five males, twenty-five females) completed the second protocol; all were volunteers aged 21 to 62 years. Results: Mean differences between actual and estimated portion sizes by photographs were between 213?1 % and 124?5 % when pre-weighed foods were presented, and between 210?4 % and 13?8 % when foods were consumed the day before. No significant differences were found between actual and estimated portion sizes except for three dishes (loubieh bil zeit, tabbouleh and yachnet bazella). Bland-Altman plots showed good agreement for all dishes with a negligible bias of 20?2 g between estimated and presented portions, and 26?3 g between estimated and eaten portions. Conclusions: In the Lebanese diet, food photographs seem a reliable tool for quantification of food portion sizes.

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confidence: 99%

Development and evaluation of a photographic atlas as a tool for dietary assessment studies in Middle East cultures

Tueni

Mounayar

Birlouez‐Aragon³

2012

Public Health Nutr.

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“…The following calculations have not been adjusted for energy-under-reporting, and should therefore be interpreted with due care. However, it is noteworthy that social desirability may also lead to over-reporting of foods perceived to be healthy, including horticultural crops, among some groups (14,15) . The UK and USA have diverse diets compared to most countries.…”

Section: Proceedings Of the Nutrition Societymentioning

confidence: 99%

Eats roots and leaves. Can edible horticultural crops address dietary calcium, magnesium and potassium deficiencies?

Broadley

White²

2010

Proc. Nutr. Soc.

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Human individuals require at least 20 inorganic elements ('minerals') for normal functioning. However, much of the world's population is probably deficient in one or more essential minerals and at increased risk of physiological disorders. Addressing these 'hidden hungers' is a challenge for the nutrition and agriculture sectors. Mineral deficiencies among populations are typically identified from dietary surveys because (1) minerals are acquired primarily from dietary sources and (2) (bio)assays of mineral status can be unreliable. While dietary surveys are likely to under-report energy intakes, surveys show that 9 % of all UK and US adults consume Ca and Mg, and 14 % of adults consume K, at quantities below the UK lower reference nutrient intake, and are therefore at risk of deficiency. Low dietary Ca, Mg and K intakes can be caused by energy-malnourishment and by cultural and economic factors driving dietary conservatism. For example, cereal grains routinely displace vegetables and fruits in the diet. Cereal grains have low concentrations of several minerals, notably Ca, as a consequence of their physiology. Low grain mineral concentrations are compounded when cereal crops are grown in soils of low mineral phytoavailability and when grain is processed. In this paper, the impact of increased vegetable consumption and horticultural biofortification, i.e. enhancing crop mineral content through breeding and agronomy, on intakes of the major minerals Ca, Mg and K is assessed. Despite low energy intake from horticultural crops generally, increased vegetable consumption and biofortification would significantly improve dietary intakes of Ca, Mg and K.

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“…A photographic booklet is convenient compared with three-dimensional models for example, since it is easy for the interviewer to carry and can include a wide range of different types of foods. In high-income countries, the validity of using food photographs in portion size estimation has been studied in different age groups, including adults (5)(6)(7)(8)(9) , adults and elderly persons (10) and children and adolescents (7,11,12) . The study designs have varied from studies in which the subjects serve themselves a variety of foods in portions of their choice and the next day they are asked to recall the food items and estimate their amounts (5) to studies in which the food is not eaten but shown to the subject and the assessment of portion size is done simultaneously (9) .…”

mentioning

confidence: 99%

“…In high-income countries, the validity of using food photographs in portion size estimation has been studied in different age groups, including adults (5)(6)(7)(8)(9) , adults and elderly persons (10) and children and adolescents (7,11,12) . The study designs have varied from studies in which the subjects serve themselves a variety of foods in portions of their choice and the next day they are asked to recall the food items and estimate their amounts (5) to studies in which the food is not eaten but shown to the subject and the assessment of portion size is done simultaneously (9) . In general, despite the fact that there is large variation in individuals' ability to estimate portion sizes (7)(8)(9)(10)(11)(12) , many studies have shown acceptable results on the group level (6,(8)(9)(10)(11)(12) and the use of food photographs has become an established practice in dietary studies.…”

mentioning

confidence: 99%

“…The study designs have varied from studies in which the subjects serve themselves a variety of foods in portions of their choice and the next day they are asked to recall the food items and estimate their amounts (5) to studies in which the food is not eaten but shown to the subject and the assessment of portion size is done simultaneously (9) . In general, despite the fact that there is large variation in individuals' ability to estimate portion sizes (7)(8)(9)(10)(11)(12) , many studies have shown acceptable results on the group level (6,(8)(9)(10)(11)(12) and the use of food photographs has become an established practice in dietary studies. More recently, portion size photographs have also been developed to be used on computer screen (12)(13)(14) .…”

mentioning

confidence: 99%

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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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Accuracy in the estimation of food servings against the portions in food photographs

Cited by 112 publications

References 19 publications

Development and evaluation of a photographic atlas as a tool for dietary assessment studies in Middle East cultures

Development and evaluation of a photographic atlas as a tool for dietary assessment studies in Middle East cultures

Eats roots and leaves. Can edible horticultural crops address dietary calcium, magnesium and potassium deficiencies?

Food photographs in portion size estimation among adolescent Mozambican girls

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