Adjuvant! Website has been down since the end of October. It's considered to be a better predictive tool than Predict ( which uses almost laughably narrow scientific data) so, Predict it is as far as easily accessible stats about the efficacy of treatments until Adjuvant is back on line. Considering how far they cast their next, I wouldn't be surprised if they disappear and we are left with a tool (Predict) which is based on studies from the British Midlands years ago.
A good. Oncologist would be reading all the articles and partnering in research projects. But then they would have no time to eat or have a life, so I can understand why they use a third party to figure out what is current.
I got the shits with some pretty minor side effects of Tamoxifen and stopped taking it about 4 years in. If I'd known then what I know now, I'd have kept taking it for 10 years. It may, or may not, have made a difference to my current circumstances. I'll never know, but I do wonder.