scholarly journals Accuracy in the estimation of children's food portion sizes against a food picture book by parents and early educators

2018 ◽  
Vol 7 ◽  
Author(s):  
Kaija Nissinen ◽  
Liisa Korkalo ◽  
Henna Vepsäläinen ◽  
Päivi Mäkiranta ◽  
Leena Koivusilta ◽  
...  
Keyword(s):  
Picture Book ◽  
Portion Size ◽  
Cottage Cheese ◽  
Accurate Estimation ◽  
Food Groups ◽  
Size Estimation ◽  
Fresh Vegetables ◽  
Portion Sizes ◽  
Food Portion ◽  
Food Portions

AbstractValidated methodological aids for food quantification are needed for the accurate estimation of food consumption. Our objective was to assess the validity of an age-specific food picture book, which contains commonly eaten foods among Finnish children, for parents and early educators in estimating food portion sizes. The food picture book was developed to assist in portion size estimation when filling in food records in the Increased health and wellbeing in preschools (DAGIS) study. All ninety-five food pictures in the book, each containing three or four different portion sizes, were evaluated at real-time sessions. Altogether, seventy-three parents and 107 early educators or early education students participated. Each participant evaluated twenty-three or twenty-four portions by comparing presented pre-weighed food portions against the corresponding picture from the food picture book. Food portions were not consumed by participants. The total proportion of correct estimations varied from 36 % (cottage cheese) to 100 % (fish fingers). Among the food groups, nearly or over 90 % of the estimations were correct for bread, pastries and main courses (‘piece products’ such as meatballs and chicken nuggets). Soups, porridges, salads and grated and fresh vegetables were least correctly estimated (<65 % correct estimations). There were small differences in evaluations of berries and fresh fruits, warm vegetables and pastries between the parents and early educators, but other estimations were mostly similar. The children's food picture book was found to be a useful aid for the estimation of food portion sizes. Parents and early educators evaluated the portion sizes with similar accuracy.

scholarly journals Accuracy of estimates of food portion size using food photographs – the importance of using age-appropriate tools

2006 ◽  
Vol 9 (4) ◽  
pp. 509-514 ◽  
Author(s):  
Emma Foster ◽  
John NS Matthews ◽  
Michael Nelson ◽  
Julie M Harris ◽  
John C Mathers ◽  
...  
Keyword(s):  
Original Data ◽  
Portion Size ◽  
Size Estimation ◽  
Average Accuracy ◽  
Portion Sizes ◽  
Food Portion ◽  
Age Appropriate ◽  
Portion Size Estimation ◽  
Size Estimates ◽  
Food Portion Size

AbstractBackgroundIn order to obtain a measure of nutrient intake, a measure or estimate of the amount of food consumed is required. Weighing foods imposes a large burden on subjects, often resulting in underreporting. Tools are available to assist subjects in providing an estimate of portion size and these include food photographs. The application of these tools in improving portion size estimation by children has not been investigated systematically.ObjectivesTo assess the accuracy with which children are able to estimate food portion sizes using food photographs designed for use with adults, and to determine whether the accuracy of estimates is improved when age-appropriate portion size photographs are provided.DesignOriginal data from three separate studies, on the accuracy of portion size estimates by adults using food photographs, by children using adult photographs and by children using age-appropriate photographs, are analysed and compared.SubjectsOne hundred and thirty-five adults aged 18 to 90 years and 210 children aged 4 to 11 years.ResultsChildren's estimates of portion sizes using age-appropriate food photographs were significantly more accurate (an underestimate of 1% on average) than estimates using photographs designed for use with adults (an overestimate of 45% on average). Accuracy of children's estimates of portion size using age-appropriate photographs was not significantly different from that of adults. Children overestimated a food's weight by 18% on average and adults underestimated by 5%.ConclusionsProviding children with food photographs depicting age-appropriate portion sizes greatly increases the accuracy of portion size estimates compared with estimates using photographs designed for use with adults.

scholarly journals Accuracy of food portion size estimation from digital pictures acquired by a chest-worn camera

2013 ◽  
Vol 17 (8) ◽  
pp. 1671-1681 ◽  
Author(s):  
Wenyan Jia ◽  
Hsin-Chen Chen ◽  
Yaofeng Yue ◽  
Zhaoxin Li ◽  
John Fernstrom ◽  
...  
Keyword(s):  
Electronic Device ◽  
Estimation Method ◽  
Portion Size ◽  
Accurate Estimation ◽  
Size Estimation ◽  
Physical Measurements ◽  
Food Portion ◽  
Actual Volume ◽  
Dining Room ◽  
Food Portion Size

AbstractObjectiveAccurate estimation of food portion size is of paramount importance in dietary studies. We have developed a small, chest-worn electronic device called eButton which automatically takes pictures of consumed foods for objective dietary assessment. From the acquired pictures, the food portion size can be calculated semi-automatically with the help of computer software. The aim of the present study is to evaluate the accuracy of the calculated food portion size (volumes) from eButton pictures.DesignParticipants wore an eButton during their lunch. The volume of food in each eButton picture was calculated using software. For comparison, three raters estimated the food volume by viewing the same picture. The actual volume was determined by physical measurement using seed displacement.SettingDining room and offices in a research laboratory.SubjectsSeven lab member volunteers.ResultsImages of 100 food samples (fifty Western and fifty Asian foods) were collected and each food volume was estimated from these images using software. The mean relative error between the estimated volume and the actual volume over all the samples was −2·8 % (95 % CI −6·8 %, 1·2 %) withsdof 20·4 %. For eighty-five samples, the food volumes determined by computer differed by no more than 30 % from the results of actual physical measurements. When the volume estimates by the computer and raters were compared, the computer estimates showed much less bias and variability.ConclusionsFrom the same eButton pictures, the computer-based method provides more objective and accurate estimates of food volume than the visual estimation method.

scholarly journals An evaluation of a virtual atlas of portion sizes (VAPS) mobile augmented reality for portion size estimation

2020 ◽  
Author(s):  
Meng Chun Lam ◽  
Nur Afyfah Suwadi ◽  
Adibah Huda Mohd Zainul Arifien ◽  
Bee Koon Poh ◽  
Nik Shanita Safii ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Dietary Assessment ◽  
3D Models ◽  
Health Science ◽  
Portion Size ◽  
Size Estimation ◽  
Portion Sizes ◽  
Food Portion ◽  
Science Group ◽  
Portion Size Estimation

Abstract Food portion size estimation is a critical yet challenging task in dietary assessment. Augmented reality technology enables the presentation of food dimensions and volume in a virtual three-dimensional object. It has the potential to improve perception and estimation of portion sizes. This study aims to develop and evaluate a novel mobile augmented reality application, namely Virtual Atlas of Portion Sizes (VAPS), as a portion size estimation aid. The development methodology of VAPS involves food photography, reconstruction of 3D models using photogrammetry method and presenting them in an AR environment. The 3D food models displayed in either semi-transparent or vivid mode for users to perform food portion estimation. Users can then resize and rotate the 3D models to fit the virtual model with the actual food. A total of thirty-six participants were involved in the evaluation and were divided into a health science and a non-health science background group. VAPS received good usability level with 76 SUS score. In terms of task completion time, unsurprisingly, the health science group performed faster. However, both groups have equivalent accuracy on the food portion estimation task using VAPS: 22.5% for non-health science group and 26.6% for health science group. The health science group liked and have better accuracy in vivid 3D food models (37.5%). Meanwhile, the non-health science group preferred semi-transparent 3D food models, but the accuracy is not significantly different between semi-transparent (25%) and vivid 3D food model (20%). Results demonstrate the potential of VAPS to aid in portion size estimation for dietary assessment, and participants’ feedback will be incorporated in the future for improvement of the app.

scholarly journals Accuracy of hands v. household measures as portion size estimation aids

2016 ◽  
Vol 5 ◽  
Author(s):  
Alice A. Gibson ◽  
Michelle S. H. Hsu ◽  
Anna M. Rangan ◽  
Radhika V. Seimon ◽  
Crystal M. Y. Lee ◽  
...  
Keyword(s):  
Estimation Method ◽  
Accurate Method ◽  
Portion Size ◽  
Accurate Estimation ◽  
Size Estimation ◽  
Female Age ◽  
Percentage Difference ◽  
Portion Sizes ◽  
Finger Width ◽  
Portion Size Estimation

AbstractAccurate estimation of food portion size is critical in dietary studies. Hands are potentially useful as portion size estimation aids; however, their accuracy has not been tested. The aim of the present study was to test the accuracy of a novel portion size estimation method using the width of the fingers as a ‘ruler’ to measure the dimensions of foods (‘finger width method’), as well as fists and thumb or finger tips. These hand measures were also compared with household measures (cups and spoons). A total of sixty-seven participants (70 % female; age 32·7 (sd 13·7) years; BMI 23·2 (sd  3·5) kg/m2) attended a 1·5 h session in which they estimated the portion sizes of forty-two pre-weighed foods and liquids. Hand measurements were used in conjunction with geometric formulas to convert estimations to volumes. Volumes determined with hand and household methods were converted to estimated weights using density factors. Estimated weights were compared with true weights, and the percentage difference from the true weight was used to compare accuracy between the hand and household methods. Of geometrically shaped foods and liquids estimated with the finger width method, 80 % were within ±25 % of the true weight of the food, and 13 % were within ±10 %, in contrast to 29 % of those estimated with the household method being within ±25 % of the true weight of the food, and 8 % being within ±10 %. For foods that closely resemble a geometric shape, the finger width method provides a novel and acceptably accurate method of estimating portion size.

scholarly journals Validation of a picture book to be used in a pan-European dietary survey

2018 ◽  
Vol 21 (9) ◽  
pp. 1654-1663 ◽  
Author(s):  
Sofia Vilela ◽  
Carla Lopes ◽  
Sofia Guiomar ◽  
Milton Severo ◽  
Lalka Rangelova ◽  
...  
Keyword(s):  
Picture Book ◽  
Intraclass Correlation ◽  
Dietary Survey ◽  
Portion Sizes ◽  
Food Portion ◽  
Adolescents And Adults ◽  
The Mean ◽  
Original Picture ◽  
Country Specific ◽  
Food Portions

AbstractObjectiveTo validate a picture book for estimation of food portion sizes using two approaches: (i) ‘perception’ of food portions by comparison with a series of food photos; and (ii) ‘conceptualization and memory’, using the same photos to estimate the amount of served food one hour after self-served food portions.DesignEach partner developed a country-specific picture book based on the so-called EPIC-Soft picture book. Representative and common photo series were chosen achieving approximately 25 % of the original picture book (n23). Three portions from each photo series were randomly selected.SettingThe study was performed within the Pilot study in the view of a Pan-European dietary survey – Adolescents, adults and elderly (PILOT-PANEU) project.SubjectsA sample of adolescents and adults was recruited in five countries: Bulgaria (n103), Finland (n34), Germany (n69), Hungary (n62) and Portugal (n77).ResultsAmong the portions of the corresponding photo series and depending on the type of food, from 18 % (cheese) to 96 % (ratatouille) of participants chose the correct portions. In the perception study, agreement between the portions shown and reported was substantial (intraclass correlation coefficient (ICC)=0·805) and the mean difference was very low. In the memory study, agreement between the served and reported portions was lower than in the perception study (ICC=0·536). Agreement also seemed to decrease as the appearance of food on the plate differed from food in the picture.ConclusionsOverall, the picture series selected can be applied in future intake surveys to quantify foods similar to those depicted in the pictures.

scholarly journals Analysis of the National Adult Nutrition Survey (Ireland) and the Food4Me Nutrition Survey Databases to Explore the Development of Food Labelling Portion Sizes for the European Union

Nutrients ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 6 ◽  
Author(s):  
Michael Gibney ◽  
Aifric O’Sullivan ◽  
Albert Flynn ◽  
Janette Walton ◽  
Hannelore Daniel ◽  
...  
Keyword(s):  
European Union ◽  
Survey Data ◽  
Portion Size ◽  
Food Labelling ◽  
Food Diary ◽  
Nutrition Survey ◽  
Portion Sizes ◽  
Food Portion ◽  
Food Portion Size ◽  
The Eu

The present study set out to explore the option of developing food portion size for nutritional labelling purposes using two European Union (EU) dietary surveys. The surveys were selected as they differed in (a) methodologies (food diary versus food frequency questionnaire), (b) populations (Irish National Adult Nutrition Survey (NANS) versus a seven-country survey based on the pan EU study Food4Me), (c) food quantification (multiple options versus solely photographic album) and (d) duration (4 consecutive days versus recent month). Using data from these studies, portion size was determined for 15 test foods, where portion size was defined as the median intake of a target food when consumed. The median values of the portion sizes derived from both the NANS and Food4Me surveys were correlated (r = 0.823; p < 0.00) and the mean of the two survey data sets were compared to US values from the Recognized as Customarily Consumed (RACC) database. There was very strong agreement across all food categories between the averaged EU and the US portion size (r = 0.947; p < 0.00). It is concluded that notwithstanding the variety of approaches used for dietary survey data in the EU, the present data supports using a standardized approach to food portion size quantification for food labelling in the EU.

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

2008 ◽  
Vol 11 (6) ◽  
pp. 581-587 ◽  
Author(s):  
L Huybregts ◽  
D Roberfroid ◽  
C Lachat ◽  
J Van Camp ◽  
P Kolsteren
Keyword(s):  
West African ◽  
Portion Size ◽  
Rural Setting ◽  
Group Level ◽  
Size Estimation ◽  
Childbearing Age ◽  
Food Items ◽  
Food Portion ◽  
Mean Differences ◽  
Food Portion Size

AbstractObjectiveTo validate food photographs for food portion size estimation of frequently consumed dishes, to be used in a 24-hour recall food consumption study of pregnant women in a rural environment in Burkina Faso. This food intake study is part of an intervention evaluating the efficacy of prenatal micronutrient supplementation on birth outcomes.SubjectsWomen of childbearing age (15–45 years).DesignA food photograph album containing four photographs of food portions per food item was compiled for eight selected food items. Subjects were presented two food items each in the morning and two in the afternoon. These foods were weighed to the exact weight of a food depicted in one of the photographs and were in the same receptacles. The next day another fieldworker presented the food photographs to the subjects to test their ability to choose the correct photograph.ResultsThe correct photograph out of the four proposed was chosen in 55% of 1028 estimations. For each food, proportions of underestimating and overestimating participants were balanced, except for rice and couscous. On a group level, mean differences between served and estimated portion sizes were between −8.4% and 6.3%. Subjects who attended school were almost twice as likely to choose the correct photograph. The portion size served (small vs. largest sizes) had a significant influence on the portion estimation ability.ConclusionsThe results from this study indicate that in a West African rural setting, food photographs can be a valuable tool for the quantification of food portion size on group level.

scholarly journals A comparison of food portion size estimation by older adults, young adults and nutritionists

2017 ◽  
Vol 22 (2) ◽  
pp. 230-236 ◽  
Author(s):  
Claire Marie Timon ◽  
S. E. Cooper ◽  
M. E. Barker ◽  
A. J. Astell ◽  
T. Adlam ◽  
...  
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Portion Size ◽  
Size Estimation ◽  
Food Portion ◽  
Portion Size Estimation ◽  
Food Portion Size

scholarly journals Estimation of typical food portion sizes for children of different ages in Great Britain

2008 ◽  
Vol 99 (6) ◽  
pp. 1344-1353 ◽  
Author(s):  
Wendy L. Wrieden ◽  
Patricia J. Longbottom ◽  
Ashley J. Adamson ◽  
Simon A. Ogston ◽  
Anne Payne ◽  
...  
Keyword(s):  
Dietary Assessment ◽  
Age Groups ◽  
Food Groups ◽  
Linear Quadratic ◽  
Portion Sizes ◽  
Food Portion ◽  
Different Ages ◽  
Typical Food ◽  
Unique Source ◽  
The Uk

It is often the case in dietary assessment that it is not practicable to weigh individual intakes of foods eaten. The aim of the work described was to estimate typical food portion weights for children of different ages. Using the data available from the British National Diet and Nutrition Surveys of children aged 1½–4½ years (1992–1993) and young people aged 4–18 years (1997), descriptive statistics were obtained, and predicted weights were calculated by linear, quadratic and exponential regression for each age group. Following comparison of energy and nutrient intakes calculated from actual (from an earlier weighed intake study) and estimated portion weights, the final list of typical portion sizes was based on median portion weights for the 1–3- and 4–6-year age groups, and age-adjusted means using linear regression for the 7–10-, 11–14- and 15–18-year age groups. The number of foods recorded by fifty or more children was 133 for each of the younger age groups (1–3 and 4–6 years) and seventy-five for each of the older age groups. The food portion weights covered all food groups. All portion sizes increased with age with the exception of milk in tea or coffee. The present study draws on a unique source of weighed data on food portions of a large sample of children that is unlikely to be repeated and therefore provides the best possible estimates of children's food portion sizes in the UK.

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