Titre :
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EPIC : European Prospective Investigation into Cancer and Nutrition. Validity studies on dietary assessment methods. Validation of dietary assessment methods in the UK arm of EPIC using weighed records, and 24-hour urinary nitrogen and potassium and serum vitamin C and carotenoids as biomarkers. (1997)
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Auteurs :
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S.A. BINGHAM ;
A. CASSIDY ;
N.E. DAY ;
C. GILL ;
T.J.A. KEY ;
K.T. KHAW ;
R. LUBIN ;
Barry-M MARGETTS, éd. ;
S. OAKES ;
Pirjo PIETINEN, éd. ;
Elio RIBOLI, coor. ;
L. ROE ;
S.A. RUNSWICK ;
D.I. THURNHAM ;
A. WELCH ;
Clinical Gerontology Unit. F & G Block. Addenbrooke's Hospital. Cambridge. GBR ;
Institute of Public Health. University of Cambridge. Forvie Site. Robinson Way. Cambridge. GBR ;
Mrc Dunn Clinical Nutrition Centre. Hills Road. Cambridge. GBR
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Type de document :
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Article
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Dans :
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International journal of epidemiology (vol. 26, 1997)
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Pagination :
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S137-S151
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Langues:
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Anglais
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Mots-clés :
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Consommation alimentaire
;
Comportement alimentaire
;
Questionnaire
;
Méthodologie
;
Etude comparée
;
Epidémiologie
;
Royaume Uni
;
Europe
;
Homme
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Résumé :
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[BDSP. Notice produite par INIST 7NkGDR0x. Diffusion soumise à autorisation]. Background. In the UK EPIC validation studies, the accuracy of several methods was assessed by comparison with 16-day weighed records and the biomarkers, 24-hour urine nitrogen (N) and potassium (K), plasma carotenoids and plasma vitamin C. Methods. Comparisons between methods were made on 156 women, studied over 1 year at 3-monthly intervals at home. On each of four occasions, volunteers completed 4 days of weighed records and provided two 24-hour urine collections and a fasting blood sample. Results. In comparison with the 16 days of weighed records, a food frequency questionnaire (FFQ) yielded higher values mainly due to greater reported consumption of milk and of vegetables. A 24-hour recall was as good as the FFQ in placing individuals in the distribution of habitual diet from weighed records. Results obtained from a 7-day estimated record were closest to those obtained from the weighed record. Correlations between 24-hour urine excretion and dietary N intake from weighed records were high (0.78-0.87) as were those with estimated food diaries (0.60-0.70). Correlations between urine N and the FFQ and 24-hour recall were lower (0.10 to 0.27), but improved by energy adjustment using residuals for N and K which are correlated with total energy intake. Comparisons between dietary estimates and urinary K and serum carotenoids and vitamin C showed broadly similar results. (...)
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