Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40880-019-0371-y/MediaObjects/40880_2019_371_Fig3_HTML.png)
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)