Validation of a computer based system for assessing dietary intake

James A. Levine, Angela M. Madden, Marsha Y. Morgan

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Dietary intake was assessed in 50 patients in hospital by using a dietary history method and computer based system for data collection and standard food tables to calculate the composition of nutrients. The results were compared with those from a weighed assessment that was calculated by using both food tables and manufacturers’ food analyses. The use of the food tables overestimated mean (SEM) individual nutrient intakes by between 2•5% (1.5%) and 15-5% (3.0%). The mean errors associated with the dietary history assessment varied from —23% (7.8%) for fat intake to +21.4% (8.5%) for carbohydrate intake. Overall, 30% of the assessments of total nutrient intakes that were calculated using this method were within -20% to 4.20% of actual values; 18% were within -10% to +10%. The mean errors associated with the computer based assessment varied from -1.0% (4.3%) for carbohydrate intake to 8.5% (3.4%) for protein intake. Overall, 56% of the assessments of total nutrient intakes were within -20% to +20% of actual intakes; 31% were within -10% to +10%. The computer based system provides an accurate, reproducible, convenient, and inexpensive method for assessing dietary intake.

Original languageEnglish (US)
Pages (from-to)369-372
Number of pages4
JournalBritish Medical Journal (Clinical research ed.)
Volume295
Issue number6594
DOIs
StatePublished - Aug 8 1987

ASJC Scopus subject areas

  • Medicine(all)

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