Left-handedness and risk of breast cancer |
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| Authors: | Fritschi L Divitini M Talbot-Smith A Knuiman M |
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| Affiliation: | Western Australian Institute for Medical Research, Nedlands, Perth, Western Australia 6009, Australia. fritschi@waimr.uwa.edu.au |
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| Abstract: | Left-handedness may be an indicator of intrauterine exposure to oestrogens, which may increase the risk of breast cancer. Women (n=1786) from a 1981 health survey in Busselton were followed up using death and cancer registries. Left-handers had higher risk of breast cancer than right-handers and the effect was greater for post-menopausal breast cancer (hazard ratio=2.59, 95% confidence interval 1.11-6.03). |
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| Keywords: | breast cancer left-handedness fetal origins of disease cohort |
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