Estimation accuracy of bean bags as portion size estimation aids for amorphous foods

Show simple item record

dc.contributor.author Wenhold, Friedeburg Anna Maria
dc.contributor.author Macintyre, Una Elizabeth
dc.date.accessioned 2024-09-13T08:36:48Z
dc.date.available 2024-09-13T08:36:48Z
dc.date.issued 2024
dc.description.abstract OBJECTIVE : A study was undertaken to explore the portion size estimation accuracy of bean bags as low-cost volumetric portion size estimation aids for amorphous foods. DESIGNS : Three observational, cross-sectional and three experimental/quasi-experimental developmental evaluation sub-studies were carried out. SETTINGS : Observational, cross-sectional: one retirement village and four schools. Experimental/quasi-experimental: one South African university. PARTICIPANTS : Observational, cross-sectional: elderly persons, adult women (school educators), schoolchildren. Experimental/quasi-experimental: university students. In total N = 541; > 3 800 observations. VARIABLES MEASURED : Using a standardised set of bean bags (test object; volume range: 60–625 ml), volumes of different amorphous foods (reference objects: actual foods or representations) in varying portion sizes had to be estimated. Accuracy (outcome measure) was perfect if volumes of test and reference object were identical. Acceptable estimation accuracy allowed for misestimation by one bean bag size. Test–retest reproducibility was also assessed. ANALYSIS : Descriptive statistics (proportions perfect and acceptable accuracy). RESULTS : Across the sub-studies, perfect accuracy ranged from 22–65% depending on participants, reference food and portion size. Irrespective thereof, acceptable accuracy was noted in > 70% of observations. Reproducibility varied (range: 28–67% agreement). CONCLUSIONS AND IMPLICATIONS : Perfect portion size estimation of amorphous foods remains challenging. When misestimation by 60–125 ml still serves the purpose of a dietary assessment, bean bags show promise for cost-effective food volume quantification, especially on group level in resource-limited settings. en_US
dc.description.department Human Nutrition en_US
dc.description.librarian hj2024 en_US
dc.description.sdg SDG-02:Zero Hunger en_US
dc.description.sdg SDG-03:Good heatlh and well-being en_US
dc.description.uri https://www.tandfonline.com/journals/ojcn20 en_US
dc.identifier.citation Friedeburg Anna Maria Wenhold & Una Elizabeth MacIntyre (23 Apr 2024): Estimation accuracy of bean bags as portion size estimation aids for amorphous foods, South African Journal of Clinical Nutrition, DOI: 10.1080/16070658.2024.2336290. en_US
dc.identifier.issn 1607-0658 (print)
dc.identifier.issn 2221-1268 (online)
dc.identifier.other 10.1080/16070658.2024.2336290
dc.identifier.uri http://hdl.handle.net/2263/98178
dc.language.iso en en_US
dc.publisher NISC (Pty) Ltd and Informa UK Limited (trading as the Taylor & Francis Group) en_US
dc.rights © 2024 The Author(s). Open Access article distributed under the terms of the Creative Commons License [CC BY 4.0]. en_US
dc.subject Dietary assessment en_US
dc.subject Portion size estimation en_US
dc.subject Portion size estimation aids en_US
dc.subject Accuracy en_US
dc.subject Amorphous foods en_US
dc.subject Bean bags en_US
dc.subject SDG-02: Zero hunger en_US
dc.subject SDG-03: Good health and well-being en_US
dc.title Estimation accuracy of bean bags as portion size estimation aids for amorphous foods en_US
dc.type Article en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record