Fig. 3
Kaplan–Meier curves of breast cancer-specific survival (BCSS) in the matched cohort. a Surgical axillary staging significantly prolonged the BCSS of patents (P < 0.001). Patients with age between 50 and 64 years old (b), T1mic/T1a tumor (c), grade I disease (d), positive estrogen receptor (ER) (e), and positive progesterone receptor (PR) (f) had longer BCSS than their counterparts (all P < 0.05)