Table 4.
Cox proportional hazards regression, comparing CSS, BCSS, and OS 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 | Cardiac-specific survival |
Breast cancer-specific survival |
OS |
|||
|---|---|---|---|---|---|---|
| HR∗ | 95% CI | HR† | 95% CI | HR∗ | 95% CI | |
| Laterality | ||||||
| Right-sided breast cancer | Ref | Ref | Ref | |||
| Left-sided breast cancer | 0.96 | (0.87-1.06) | 0.96 | (0.85-1.09) | 0.98 | (0.94-1.03) |
Abbreviations: BCSS = breast cancer specific survival; CI = confidence interval; CSS = cardiac-specific survival; HR = hazard ratio; OS = overall survival.
∗
With adjustment for age, race, tumor location, histologic grade, size, progesterone receptor status, lymph node surgery, adjuvant chemotherapy receipt.
†
With adjustment for age, race, tumor location (quadrant), chemotherapy receipt.