Validation of a computer based system for assessing dietary intake

J A Levine, A M Madden, M Y Morgan

    Research output: Contribution to journalArticlepeer-review

    17 Citations (Scopus)
    63 Downloads (Pure)

    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 +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
    Pages (from-to)369-72
    Number of pages4
    JournalBritish Medical Journal (Clinical research ed.)
    Volume295
    Issue number6594
    DOIs
    Publication statusPublished - 1987

    Keywords

    • Automatic Data Processing
    • Data Collection
    • Diet Surveys
    • Energy Intake
    • Female
    • Humans
    • Male
    • Microcomputers
    • Middle Aged
    • Nutrition Surveys

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