摘要：Background: A simplified optically readable food record (ORFR) was developed and compared with an openendedweighed record (WR).Objective: To compare intake of nutrients and foods using a seven-day ORFR with intake estimated using aseven-day WR. The results from each method were validated against 24-h urine nitrogen excretion and energyintake (EI)/estimated basal metabolic rate (BMR) cut-off values.Design: The study comprised 73 free-living, healthy 70-year-old Swedish men. Dietary data were collectedduring seven consecutive days, starting either with WR or ORFR.Results: Average intakes of energy and several nutrients were significantly lower when estimated using ORFRthan when using WR. However, when adjusted for nutrient density, only a few nutrients were still lower withORFR. Spearman correlation coefficients between the two methods regarding intakes of energy and energyyieldingnutrients were moderate to high, i.e. 0.4-0.6, while figures for most micro-nutrients were in the range0.3-0.5. A large proportion of subjects under-reported their EIs, a higher proportion doing so when usingORFR. Protein intake obtained using ORFR was 31% lower than the values calculated from the 24-h urinenitrogen excretion, and 22% lower than those obtained from WR. Average intakes of milk, cheese and othermilk products as well as coffee, tea and alcohol were significantly higher when estimated using ORFR thanwhen using WR, while intakes of vegetables, meat and meat products, fish, bread and cereal products as wellas number of sweet foods were significantly lower with ORFR.Conclusions: Based on these results, adjustments of some portion sizes in ORFR are suggested. In view of theadvantages of ORFR with respect to lower response burden and rapid processing of data, such adjustmentswould make ORFR a suitable dietary assessment tool for use in dietary surveys, including larger resourcedemandingepidemiological investigations.
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