What is the purpose of the IBIS II Prevention part of the study?
This study has been set up to investigate whether the new drug, anastrozole, can be used effectively to prevent breast cancer. We will be investigating how well tolerated this drug is and how effective it is compared to a placebo. This is a randomised, double blind study, which means that you will have an equal chance of receiving anastrozole or placebo. The reason for this is because we do not know whether anastrozole is more effective than no treatment. The study is double blind in order to reduce any bias when it comes to reporting or recording side effects. Neither you nor your local co-ordinator will know which treatment group you are randomised to.
