From: Tamoxifen may prevent both ER+ and ER- breast cancers and select for ER- carcinogenesis: an alternative hypothesis
Risk reduction
Za
BCPT
MORE
50%
23.5%
26.6%
60%
20.1%
22.7%
70%
16.2%
18.2%
80%
11.6%
13.1%
90%
6.3%
7.1%