Food photographs in portion size estimation among adolescent Mozambican girls
| Autor: | Liisa Korkalo, Jaakko Nevalainen, Maijaliisa Erkkola, Lourdes Fidalgo, Marja Mutanen |
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| Rok vydání: | 2013 |
| Předmět: |
Test food
Adolescent 030309 nutrition & dietetics Food consumption Medicine (miscellaneous) HOT TOPIC – Nutrition in low and middle income countries Portion size Diet Surveys Mean difference 03 medical and health sciences 0302 clinical medicine Photography Humans 030212 general & internal medicine Mozambique Size Perception 2. Zero hunger Estimation 0303 health sciences Meal ta112 Nutrition and Dietetics Limits of agreement Public Health Environmental and Occupational Health Portion Size Reproducibility of Results Staple food Diet Geography Food Mental Recall Female Energy Intake Demography |
| Zdroj: | Public Health Nutr |
| ISSN: | 1368-9800 |
| DOI: | 10.1017/S1368980012003655 |
| Popis: | ObjectiveTo 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.DesignLife-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.SettingZambezia Province, Mozambique.SubjectsNinety-nine girls aged 13–18 years.ResultsThe mean differences between estimated and actual portion sizes relative to the actual portion size ranged from −19 % to 8 % for different foods. The respective mean difference for all foods combined was −5 % (95 % CI −12, 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.ConclusionsUsing 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. |
| Databáze: | OpenAIRE |
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