| Titre : | Under-and overreporting of energy intake using urinary cations as biomarkers : Relation to body mass index. (2000) |
| Auteurs : | JIANJUN ZHANG . (.) ; H. KESTELOOT ; S. SASAKI ; E.H.M. TEMME ; Department of Epidemiology. School of Public Health. Catholic University of Leuven. Leuven. BEL |
| Type de document : | Article |
| Dans : | American journal of epidemiology (vol. 152, n° 5, 2000) |
| Pagination : | 453-462 |
| Langues: | Anglais |
| Mots-clés : | Belgique ; Europe ; Surveillance épidémiologique ; Epidémiologie ; Obésité ; Homme ; Dépistage ; Evaluation ; Régime alimentaire ; Nutrition ; Sodium ; Potassium ; Maladie nutrition |
| Résumé : | [BDSP. Notice produite par INIST 23VZR0xe. Diffusion soumise à autorisation]. Under-and overreporting of energy intake in relation to body mass index (BMI, kg/m2) were examined by using 24-hour urinary sodium and potassium as biomarkers. The data were obtained from 2,124 men and 1,998 women aged 25-74 years who participated in the 1981-1984 Belgian Interuniversity Research on Nutrition and Health study conducted in Belgium. The ratios of dietary intake to urinary excretion of sodium and potassium, as a measure for relative underreporting, were inversely associated with BMI (for men, p=-0.019 for sodium ratio and bêta=-0.026 for potassium ratio ; for women, bêta=-0.017 for sodium ratio and bêta=-0.019 for potassium ratio ; all p<0.0001) independent of age, smoking, alcohol intake, and educational level. Since 77% of dietary potassium was reported to be excreted in the urine, subjects for whom the (dietary potassium x 0.77)/urinary potassium ratio was<1 were considered underreporters and>1 as overreporters. The percentage of underreporters increased with increasing pooled sex-specific deciles of BMI (bêta=1.88, p<0.0001) and was higher than the percentage of overreporters in 13 of 20 deciles. At a BMI of 25.4, the percentage of under-and overreporters equalized. In conclusion, the relative underreporting of energy intake and the percentage of underreporters increased with increasing BMI. |
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