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Br J Cancer. 2007 May 7;96(9):1433-5. Epub 2007 Mar 27.

Twin births, sex of children and maternal risk of ovarian cancer: a cohort study in Norway.

Author information

1
Department of Mathematics, University of Bergen, Johannes Brunsgate 12, 5008 Bergen, Norway. msega@uib.no

Abstract

In a follow-up of 1,208,001 women aged 20-74 years, no significant association was found between twin births (112 cases) and risk, though those with twin girls had a non-significantly higher risk than those with singleton births; among the latter, those with girls only had a higher risk of endometrioid tumours (incidence rate ratio 1.35; 95% confidence interval 1.03-1.76, based on 475 cases) than women with boys only.

PMID:
17387347
PMCID:
PMC2360176
DOI:
10.1038/sj.bjc.6603687
[Indexed for MEDLINE]
Free PMC Article

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