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. 2008 Jan;62(1):104-10.
doi: 10.1038/sj.ejcn.1602676. Epub 2007 Feb 21.

Evaluation of a 2-day food record to determine iron, calcium and vitamin C intake in young Belgian women

I Pynaert  1 , C Matthys, D De Bacquer, G De Backer, S De Henauw
Affiliations

Evaluation of a 2-day food record to determine iron, calcium and vitamin C intake in young Belgian women

I Pynaert et al. Eur J Clin Nutr. 2008 Jan.

Abstract

Objective: Evaluation of a 2-day food record (FR) for the assessment of iron, calcium and vitamin C intake.

Design: In a subsample of a large-scale epidemiological study, iron, calcium and vitamin C intake were estimated using a 2-day FR and compared to the nutrient intakes assessed by an 11-day FR (reference method).

Setting: City of Ghent, Dutch speaking part of Belgium.

Subjects: A number of 51 non-pregnant women (18-39 years).

Results: Mean iron, calcium and vitamin C intakes were not significantly different between the reference method and 2-day FR. Correlation coefficients of 0.63 (iron) and 0.76 (calcium, vitamin C) were reached. The iron intake of 95% of the individuals assessed by the 2-day FR varied between 5 mg above or below the reference intake. Over 50% of the women were correctly classified and 4% or fewer were extremely misclassified by the 2-day FR. Mean 11-day FR intakes increased progressively over the tertiles defined by the 2-day FR. The 11-day energy intake was under-reported by 28% of the women; no over-reporters were identified.

Conclusions: The 2-day FR is able to estimate mean iron, calcium and vitamin C intake and to rank individuals along the distribution of intakes.

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