摘要：Background: A 50-item self-administered food frequency questionnaire (FFQ) was developed for Frenchadults, to assess the intake of energy, 10 macronutrients, 11 vitamins, and 11 minerals, and to be used in thecontext of a medical consultation.Objective: To assess the repeatability and relative validity of this FFQ compared to a 7-day diet record(7-DR).Design: A total of 54 and 100 French adults were included in the repeatability and validation studies,respectively. Repeatability was assessed using two FFQs, the second carried out 3 weeks after the first. In thevalidation study, subjects first completed the FFQ, then the 7-DR the following week. Energy and nutrientintakes were compared using Pearson correlation. The degree of misclassification by the FFQ, compared tothe 7-DR, was calculated by a contingency table of quintiles. BlandAltman plots assessed the correlationbetween FFQ and 7-DR across the intake range.Results: Repeatability for intake, explored by Pearson correlation, was 0.620.90 (median: 0.81). Relativevalidity, as determined by Pearson correlation for the nutrient intake derived from the FFQ and 7-DR, was0.360.80 (0.64). The FFQ tended to report higher fiber and micronutrient intake than 7-DR. Misclassificationinto opposite quintiles ranged 06% (1%), whereas classification into same or adjacent quintiles ranged5983% (74%). BlandAltman plots showed good agreement for most nutrients across the range of intake.Conclusion: This new FFQ showed a high repeatability and good relative validity, and thanks to its shortlength, should be a useful tool for rapidly evaluating the nutrient intake of French adults.
关键词：Human nutrition;Nutrition epidemiology;food frequency questionnaire
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