Reproductive factors and risk of oesophageal and gastric cancer in the Million Women Study cohort.
BACKGROUND: Hormonal factors may influence risk for upper gastrointestinal cancers in women. We examined risk of oesophageal and gastric cancers in relation to reproductive factors in a large UK cohort, the Million Women Study. METHODS: Among 1,319,409 women aged on average 56 years at recruitment, 1186 incident cancers of the oesophagus and 1194 of the stomach were registered during 11.9 million person-years' observation. Adjusted relative risks (RRs) and 95% confidence intervals (CIs) were ...Expand abstract
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