Table 3.
Unadjusted survival rates in patients with stage I, estrogen-receptor positive breast cancer undergoing breast conservation and adjuvant radiation, 2000-2015, according to laterality (n = 41,006)
| Characteristic | Right sided breast cancer (1) |
Left sided breast cancer (2) |
Log-rank P value | ||
|---|---|---|---|---|---|
| % | 95% CI | 95% CI | |||
| CSS | .56 | ||||
| 5-y CSS | 98.2 | (98.0-98.4) | 98.3 | (98.1-98.5) | |
| 10-y CSS | 93.9 | (93.4-94.4) | 94.3 | (93.8-94.7) | |
| BCSS | .62 | ||||
| 5-y BCSS | 96.2 | (95.9-96.5) | 96.4 | (96.1-96.7) | |
| 10-y BCSS | 90.8 | (90.2-91.3) | 90.9 | (90.4-91.5) | |
| OS | .49 | ||||
| 5-y OS | 93.0 | (92.6-93.4) | 93.2 | (92.8-93.6) | |
| 10-y OS | 77.9 | (77.1-78.7) | 78.4 | (77.6-79.2) | |
Abbreviations: BCSS = breast cancer specific survival; CI = confidence interval; CSS = cardiac-specific survival; OS = overall survival.