From: Incidence of invasive breast cancer in women treated with testosterone implants: a prospective 10-year cohort study
Cases per 100,000 p-y
Years Observed
Dayton Study
T, T + AI
165
10
WHI RCT 29,30
Placebo
330
10.7
E alone
260
E + P
380
5.2
MWS 31
Never users
312
14
E alone, E + P
501
Adelaide 14
T + E, T + E + P
238
5.9
T + E + P
293