Timing of baseline cardiac assessment with echocardiography
| Anthracyclines | Total | ||
| No | Yes | ||
| (N=414) | (N=591) | (N=1005) | |
| Pre-ope | 125 (30.2%) | 161 (27.2%) | 286 (28.5%) |
| Pre-AC | 390 (66.0%) | ||
| Pre-TZ | 323 (78.0%) | 512 (86.6%) | 835 (83.1%) |
Pre-AC, period from surgery to anthracycline prescription; Pre-ope, preoperative; Pre-TZ, period from surgery to trastuzumab prescription.