Multivariate analysis with Cox proportional hazards model for OS and LRFFS of T1-T2 N1 patients
Variable | OS | LRFFS | ||||
|---|---|---|---|---|---|---|
| HR | 95% CI | P | HR | 95% CI | P | |
| Histological grade | 3.365 | 1.332-8.602 | 0.010 | 9.219 | 2.956-28.747 | 0.000 |
| ER/PR | 1.716 | 0.679-4.333 | 0.627 | 1.375 | 0.390-4.849 | 0.362 |
| PMRT | 0.914 | 0.478-1.745 | 0.784 | 0.726 | 0.233-2.265 | 0.582 |
| ECE | 1.086 | 1.012-1.164 | 0.022 | 2.867 | 1.035-7.939 | 0.043 |
OS, overall survival; LRFFS, locoregional failure-free survival; HR, hazard ratio; CI, confidence interval; ER/PR, estrogen receptor and progesterone receptor; PMRT, postmastectomy radiotherapy; ECE, extracapsular extension.