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This is the published version of a paper published in Inflammatory Bowel Diseases.

Citation for the original published paper (version of record):

Chan, S., Luben, R., van Schaik, F., Oldenburg, B., Bueno-De-Mesquita, H. et al. (2014) Carbohydrate Intake in the Etiology of Crohn's Disease and Ulcerative Colitis.

Inflammatory Bowel Diseases, 20(11): 2013-2021 http://dx.doi.org/10.1097/MIB.0000000000000168

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Appendix 1 – Correlation coefficients between food frequency questionnaires and mean monthly 24 hour recall questionnaires over one year, or weighed food records, for different countries

Denmark, the UK and Sweden compared their FFQs with 7, 16 and 18 day weighed food records respectively. All other countries compared FFQs with the mean of 24 hour recall questionnaires repeated monthly, on a different day of each month, over 1 year.

Country Carbohydrate Starch Sugar

(Mono- and di-saccharides)

Reference

UK 0.55 0.53 0.51 (23)

Germany 0.58 0.65 0.64 (monosaccharides)

0.65 (disaccharides)

(26) Italy 0.52 (male)

0.54 (female)

- 0.51 (male)

0.26 (female)

(29) Sweden 0.65 (male)

0.46 (female)

- 0.62 (male)

0.67 (female)

(24) Denmark 0.40 (male)

0.47 (female)

- - (25)

France 0.58 - - (30)

Netherlands 0.74 (male) 0.76 (female)

- - (28)

Greece 0.36 (male) 0.20 (female)

0.36 (male) 0.32 (female)

0.35 (male) 0.45 (female)

(21, 27)