Hormone-related risk factors for breast cancer in women under age 50 years by estrogen and progesterone receptor status: results from a case-control and a case-case comparison.

Breast Cancer Res · 2006 · PMC1779482 · PMID 16846528

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did not quite reach statistical significanceno p-value reported

Our data showed a 31% reduced risk of ER + PR + breast cancer, which did not quite reach statistical significance.

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did not reach statistical significanceno p-value reported

This could explain why we detected a similar magnitude of effect for late first full-term pregnancy on ER + PR + cancer as the Women's CARE Study [ 21 ], but in our study it did not reach statistical significance because of our limited statistical power.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.