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Samenstelling van voedingsmiddelentabellen met gehalten aan transvetzuren ten behoeve van epidemiologisch onderzoekOomen CM; Feskens EJM; Kok FJ; Brants HAM; Erp-Baart AMJ van; Kromhout D; Universiteit Wageningen, afdeling Humane Voeding en Epidemiologie; TNO Voeding; CZE (Rijksinstituut voor Volksgezondheid en Milieu RIVM, 2000-05-18)To study the change in intake of trans fatty acids and the effect on lipids and coronary heart disease in the Zutphen Elderly Study, food tables has been composed with data on trans fatty acids in 1985, 1990 and 1995. The tables contain contents of C18:1t isomers, all trans isomers with a chain length with less or equal than 18 C-atoms, or total trans fatty acids in g per 100g product for all the foods that were reported to be used during the nutritional surveys of the Zutphen Elderly Study in 1985, 1990 and 1995. We preferably used data of chemical analyses as well as the variation in trans fatty acids contents of comparable products between different sampling periods per year on Dutch foods. Due to different analytical methods with different accuracy for the determination of trans fatty acids used for the determination of trans fatty acids contents in foods, correction factors were established relating the different contents. The arrangment of participants of the Zutphen Elderly Study based on their intake of trans fatty acids was comparable with or without using the correction factors, or using each different trans content (C18:1t, 3C18t, total). To estimate the daily intake of trans fatty acids, underestimation of the trans fatty acid content by the gaschomatographic analyses with methylesters have to be taken into account.