Document Detail

Comparison of Visual Estimation Methods for Regular and Modified Textures: Real-Time vs Digital Imaging.
MedLine Citation:
PMID:  23017574     Owner:  NLM     Status:  In-Data-Review    
A variety of methods are available for assessing diet; however, many are impractical for large research studies in an institutional environment. Technology, specifically digital imaging, can make diet estimations more feasible for research. Our goal was to compare a digital imaging method of estimating regular and modified-texture main plate food waste with traditional on-site visual estimations, in a continuing and long-term care setting using a meal-tray delivery service. Food waste was estimated for participants on regular (n=36) and modified-texture (n=42) diets. A tracking system to ensure collection and digital imaging of all main meal plates was developed. Four observers used a modified Comstock method to assess food waste for vegetables, starches, and main courses on 551 main meal plates. Intermodal, inter-rater, and intra-rater reliability were calculated using intraclass correlation for absolute agreement. Intermodal reliability was based on one rater's assessments. The digital imaging method results were in high agreement with the real-time visual method for both regular and modified-texture food (intraclass correlation=0.90 and 0.88, respectively). Agreements between observers for regular diets were higher than those for modified-texture food (range=0.91 to 0.94; 0.82 to 0.91, respectively). Intra-rater agreements were very high for both regular and modified-texture food (range=0.93 to 0.99; 0.91 to 0.98). The digital imaging method is a reliable alternative to estimating regular and modified-texture food waste for main meal plates when compared with real-time visual estimation. Color, shape, reheating, mixing, and use of sauces made modified-texture food waste slightly more difficult to estimate, regardless of estimation method.
Maxim Parent; Helen Niezgoda; Heather H Keller; Larry W Chambers; Shauna Daly
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Academy of Nutrition and Dietetics     Volume:  112     ISSN:  2212-2672     ISO Abbreviation:  J Acad Nutr Diet     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-09-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101573920     Medline TA:  J Acad Nutr Diet     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1636-41     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2012 Academy of Nutrition and Dietetics. Published by Elsevier Inc. All rights reserved.
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