Chemotherapy and tamoxifen for breast cancer at 15 years*

TreatmentPatient groupAnnual rate ratio for breast cancer mortality over 15 yAbsolute improvement in breast cancer mortalityp Value
5 y10 y15 y
*ER  =  oestrogen receptor.
Polychemotherapy for 4–6 months including an anthracyclineWomen <50 y0.624.7%7.9%10%<0.001
Women 50–60 y0.802.6%2.9%3.0%<0.001
Tamoxifen for 5 yWomen with ER positive disease (any age)0.693.6%7.9%9.2%<0.001