TY - JOUR
T1 - Breast cancer and combined oral contraceptives
T2 - An Italian case-control study
AU - La Vecchia, Carlo
AU - Parazzini, Fabio
AU - Negri, Eva
AU - Boyle, Peter
AU - Gentile, Antonella
AU - Decarli, Adriano
AU - Franceschi, Silvia
PY - 1989
Y1 - 1989
N2 - The risk of breast cancer in relation to use of oral contraceptives was evaluated using data from a hospital-based case-control study from Northern Italy on 1517 cases below age 60 and 1351 controls admitted for acute diseases unrelated to any of the known or potential risk factors for breast cancer. The multivariate relative risk for ever vs. never users was 1.3 (95% confidence interval = 1.0-1.7). However, the risk was not related to duration of use: indeed the highest risk was observed among short-term users (
AB - The risk of breast cancer in relation to use of oral contraceptives was evaluated using data from a hospital-based case-control study from Northern Italy on 1517 cases below age 60 and 1351 controls admitted for acute diseases unrelated to any of the known or potential risk factors for breast cancer. The multivariate relative risk for ever vs. never users was 1.3 (95% confidence interval = 1.0-1.7). However, the risk was not related to duration of use: indeed the highest risk was observed among short-term users (
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U2 - 10.1016/0277-5379(89)90306-4
DO - 10.1016/0277-5379(89)90306-4
M3 - Article
C2 - 2591454
AN - SCOPUS:0024369139
VL - 25
SP - 1613
EP - 1618
JO - European Journal of Cancer
JF - European Journal of Cancer
SN - 0959-8049
IS - 11
ER -