Document Detail

Accuracy of a PDA-based dietary assessment program.
MedLine Citation:
PMID:  15925290     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Study objectives were to assess the accuracy of a food record delivered on a personal digital assistant (PDA) and to examine sources of error from the PDA-based food record. METHODS: Thirty-nine adults recruited with a newspaper advertisement were trained to record food intake using DietMatePro, a dietary assessment program delivered on a PDA. After 3 d of use, subjects returned for a follow-up visit in which a 24-h recall was conducted. Subjects also were timed while recording an observed, weighed lunch. Recalled and actual food intakes were compared with estimates recorded by the subjects when using the PDA. Paired sample t tests and Pearson's correlations assessed means and measurements of association between DietMatePro data compared with the 24-h recall data and observed meal data. Bland-Altman plots were used to assess bias in food recording. Sources of error were quantified by using calories as the unit for comparison. RESULTS: There were no significant differences in daily totals for calories and macronutrients between DietMatePro data and comparison measurements. Pearson's correlations of associations between DietMatePro data and the comparison measurement ranged from 0.505 to 0.797 (P < 0.005, n = 28) for the 24-h recall and from 0.419 to 0.786 (P < 0.005, n = 33) for the observed lunch, depending on the nutrient measured. The largest source of absolute error in caloric estimation was attributable to portion size estimation error (49%). CONCLUSIONS: DietMatePro, a PDA-based dietary assessment program, provides a method of assessing energy and macronutrient intakes comparable to the 24-h recall in samples lacking dietary restrictions.
Jeannette Beasley; William T Riley; Jersino Jean-Mary
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nutrition (Burbank, Los Angeles County, Calif.)     Volume:  21     ISSN:  0899-9007     ISO Abbreviation:  Nutrition     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2005-05-31     Completed Date:  2005-10-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8802712     Medline TA:  Nutrition     Country:  United States    
Other Details:
Languages:  eng     Pagination:  672-7     Citation Subset:  IM    
PICS, Inc., Reston, Virginia, USA.
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MeSH Terms
Computers, Handheld / standards*
Diet Records*
Dietary Carbohydrates / administration & dosage
Dietary Fats / administration & dosage
Dietary Proteins / administration & dosage
Energy Intake
Mental Recall
Middle Aged
Nutrition Assessment*
Reproducibility of Results
Sensitivity and Specificity
Reg. No./Substance:
0/Dietary Carbohydrates; 0/Dietary Fats; 0/Dietary Proteins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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