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Outcomes, Per Cohort
| 4-Year Outcomes | No Trastuzumab (n = 116) |
Trastuzumab (n = 128) |
|---|---|---|
| % (95% CI) | % (95% CI) | |
| Distant relapse-free survival | 97 (92–99) | 99 (95–100) |
| Overall survival | 99 (94–100) | 99 (95–100) |
| Ipsilateral invasive breast cancer recurrence | 3 (0.3–5.5) | 2 (0.2–5.5) |
| Contralateral invasive breast cancer | 1 (1) | 0 |
| Second primary invasive cancer (non-breast) | 3 (0.13–6.77) | 2 (−0.4 to 4.4) |
Abbreviation: CI = confidence interval.
