Development and validation of an expedited 10g protein counter (EP-10) for dietary protein intake quantification

Lim, Su Lin, Lye, Jamie, Shen, Liang, Miller, Michelle, & Chong, Yap Seng (2012) Development and validation of an expedited 10g protein counter (EP-10) for dietary protein intake quantification. Journal of Renal Nutrition, 22(6), 558-566.e4.

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Precise protein quantification is essential in clinical dietetics, particularly in the management of renal, burn and malnourished patients. The EP-10 was developed to expedite the estimation of dietary protein for nutritional assessment and recommendation. The main objective of this study was to compare the validity and efficacy of the EP-10 with the American Dietetic Association’s “Exchange List for Meal Planning” (ADA-7g) in quantifying dietary protein intake, against computerised nutrient analysis (CNA).

Protein intake of 197 food records kept by healthy adult subjects in Singapore was determined thrice using three different methods – (1) EP-10, (2) ADA-7g and (3) CNA using SERVE program (Version 4.0). Assessments using the EP-10 and ADA-7g were performed by two assessors in a blind crossover manner while a third assessor performed the CNA. All assessors were blind to each other’s results. Time taken to assess a subsample (n=165) using the EP-10 and ADA-7g was also recorded.

Mean difference in protein intake quantification when compared to the CNA was statistically non-significant for the EP-10 (1.4 ± 16.3 g, P = .239) and statistically significant for the ADA-7g (-2.2 ± 15.6 g, P = .046). Both the EP-10 and ADA-7g had clinically acceptable agreement with the CNA as determined via Bland-Altman plots, although it was found that EP-10 had a tendency to overestimate with protein intakes above 150 g. The EP-10 required significantly less time for protein intake quantification than the ADA-7g (mean time of 65 ± 36 seconds vs. 111 ± 40 seconds, P < .001).

The EP-10 and ADA-7g are valid clinical tools for protein intake quantification in an Asian context, with EP-10 being more time efficient. However, a dietician’s discretion is needed when the EP-10 is used on protein intakes above 150g.

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ID Code: 48139
Item Type: Journal Article
Refereed: Yes
Keywords: Protein counter, Protein exchange, Protein intake, Dietary protein, Validation
DOI: 10.1053/j.jrn.2011.10.005
ISSN: 1532-8503
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NUTRITION AND DIETETICS (111100) > Nutrition and Dietetics not elsewhere classified (111199)
Divisions: Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2011 National Kidney Foundation, Inc.
Copyright Statement: This is the author’s version of a work that was accepted for publication in Journal of Renal Nutrition. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Renal Nutrition, VOL 22, ISSUE 6, (2012). DOI 10.1053/j.jrn.2011.10.005
Deposited On: 18 Jan 2012 22:36
Last Modified: 16 Jul 2017 17:38

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