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A prospective study in general practice on breast‐cancer risk in postmenopausal women
Author(s) -
de Waard F.,
BaandersVan Halewijn E. A.
Publication year - 1974
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.2910140203
Subject(s) - breast cancer , medicine , prospective cohort study , postmenopausal women , obstetrics , gynecology , incidence (geometry) , relative risk , parity (physics) , cancer , mastectomy , demography , confidence interval , physics , particle physics , sociology , optics
A prospective study of breast‐cancer risk in postmenopausal women has been carried out with the cooperation of 50 general practitioners. A total of 7,259 women have been followed up for an average period of 5.4 years (maximum 8.1 years); 70 cases of breast cancer occurred. The main finding was a pronounced effect of body weight and height on breast cancer risk; the significance of this in explaining international differences in incidence is stressed. High parity counteracted the risk of high weight regarding breastcancer. Single women did not show a high risk because of their relatively low body weight. The relative risk in women with a previous mastectomy was five‐fold.