The criteria used for those already taking part
Women taking part are
- Aged between 40 and 70
- Have passed the menopause (i.e. had their last period 12 months ago)
- Have a family history of breast cancer or other risk factors such as certain types of benign lumps or abnormal mammograms
Women were not entered into the study if they:
- Have had any other cancer in the last 5 years (except non-melanoma skin cancer or carcinoma in situ of the cervix)
- Have taken tamoxifen or raloxifene for 6 months within the last 5 years. Women who took part in IBIS-I are eligible if they have been off medication for more than 5 years.
- Want to carry on taking HRT (hormone replacement therapy) that contains oestrogen
- Have had (or are planning to have) a breast(s) removed (a mastectomy) to try and prevent breast cancer
- Have any other serious medical conditions such as heart disease.
Women should discuss all options with their doctor before making a decision to take part in IBIS-II.
