Article
Effect of family history on the risk of varicose veins is affected by differential misclassification.
Journal of clinical epidemiology - 1 Jun 2010
Ahti Tiina M, Mäkivaara Liisa A, Luukkaala Tiina, Hakama Matti, Laurikka Jari O
Abstract excerpt
OBJECTIVE: We assessed differential misclassification in self-reported family history of varicose veins by comparing consistency of subject's own varicose vein status and the consistency of information on varicose veins in family members. STUDY DESIGN AND SETTING: A population-based cohort study of 4,903 middle-aged residents of the city of Tampere, Finland. A questionnaire was used at entry and at the end of the...
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