Estrogen-Progestagen Menopausal Hormone Therapy and Breast Cancer: Does Delay From Menopause Onset to Treatment Initiation Influence Risks?
Estrogen-Progestagen Menopausal Hormone Therapy and Breast Cancer: Does Delay From Menopause Onset to Treatment Initiation Influence Risks?
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DOI:
10.1200/jco.2008.21.6432
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发表时间:
2009-11-01
影响因子:
45.3
通讯作者:
Clavel-Chapelon, Francoise
中科院分区:
文献类型:
--
作者:
Fournier, Agnes;Mesrine, Sylvie;Clavel-Chapelon, Francoise
PurposeTo investigate whether the relation between estrogen-progestagen menopausal hormone therapy (EP-MHT) and breast cancer risk varies according to the delay between menopause onset and treatment initiation.Participants and MethodsBetween 1992 and 2005, 1,726 invasive breast cancers were identified among 53,310 postmenopausal women from the French E3N cohort (mean duration of follow-up, 8.1 years). Hazard ratios (HRs) and CIs were estimated using Cox models, with MHT never users as the reference.ResultsAmong recent users of EP-MHT, the risk of breast cancer varied according to the timing of treatment initiation. This variation was confined to short durations of use (