Breast cancer in relation to induced abortions in a cohort of Chinese women.

Br J Cancer · 2002 · PMC2364330 · PMID 12434288

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a significant trendno p-value reported

RESULTS The cohort study Compared to women having a first birth before age 20, nulliparous women had a significantly increased risk of breast cancer (RR=2.32, 95% CI: 1.45, 3.70) and there was a significant trend in risk with age at first birth.

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