Figure 1

Estimated 10-year absolute risks of breast cancer death associated with each risk classifier, tumor size, and tumor grade among ER-positive patients, stratified by treatment with tamoxifen. Each diamond symbol denotes the absolute risk of breast cancer death at 10 years (y-axis). The horizontal line through each diamond symbol denotes the corresponding 95% CI. The vertical lines mark a 10-year absolute risk of 10%, the conventional cut point used in deciding whether or not breast cancer patients should receive adjuvant chemotherapy.