A 98-item questionnaire was administrated twice at an interval of 3-10 months (median 5,4 months) to 452 volunteers (144 males and 308 females, median age 50 years) from three Italian provinces to evaluate the reproducibility of a quantitative food frequency questionnaire (FFQ) used in a case-control study on cancer and the breast, ovary and digestive tract. The present sudy has shown a good level of reproducibility of our questionnaire and has provided a few important hints on ways of improving the formulation of various food items.
An Italian food frequency questionnaire: reproducibility of specific food items / A. Decarli, S. Franceschi, C. La Vecchia, M. Ferraroni. ((Intervento presentato al 13. convegno SCIENTIFIC MEETING OF THE INTERNATIONAL EPIDEMIOLOGICAL ASSOCIATION: new pathways in epidemiology tenutosi a sydney nel 1993.
An Italian food frequency questionnaire: reproducibility of specific food items
A. DecarliPrimo
;C. La VecchiaPenultimo
;M. FerraroniUltimo
1993
Abstract
A 98-item questionnaire was administrated twice at an interval of 3-10 months (median 5,4 months) to 452 volunteers (144 males and 308 females, median age 50 years) from three Italian provinces to evaluate the reproducibility of a quantitative food frequency questionnaire (FFQ) used in a case-control study on cancer and the breast, ovary and digestive tract. The present sudy has shown a good level of reproducibility of our questionnaire and has provided a few important hints on ways of improving the formulation of various food items.
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