As part of the European Prospective Investigation into Cancer and Nutrition (EPIC), preliminary studies were conducted to evaluate the accuracy of individuals'dietary intake measurements from newly developed questionnaires.
In six countries that adhered from the very beginning to the multicentre, co-ordinated EPIC project, the validity studies were based on two repeat questionnaire measurements at the start and at the end of a 1-year period, in groups of about 100 volunteers of both sexes.
In addition, during this year, up to 12 24-hour recalls per person were taken monthly, and up to four blood and urine specimens were collected for measurement of biochemical markers.
In three countries that joined EPIC later, the designs of the validity studies and type of'reference'measurement chosen were somewhat different.
The results presented in this overview paper are taken partly from more detailed, country-specific publications, and partly from a central (re-) analysis of the original data, to ensure a uniform approach to the statistical analyses and presentation.
Averaged over subgroups by country and gender, Spearman coefficients of correlation between questionnaire measurements and the individuals'average 24-hour recalls ranged from 0.37 for fish to 0.68 for dairy products and 0.79 for alcoholic beverages. (...)
Mots-clés Pascal : Consommation alimentaire, Comportement alimentaire, Europe, Etude multicentrique, Questionnaire, Validation test, Etalonnage, Méthodologie, Homme, Epidémiologie, Projet EPIC, Rappel 24 heures
Mots-clés Pascal anglais : Food intake, Feeding behavior, Europe, Multicenter study, Questionnaire, Test validation, Calibration, Methodology, Human, Epidemiology, 24 hour recall
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0262637
Code Inist : 002B29A. Création : 11/06/1997.