Table 5. Associations between laterality of BC, RT, and location of stroke.
| BC-side | Carotis right | Carotis left | P-value |
|---|---|---|---|
| Stroke | |||
| Right | 49 (43.4) | 64 (56.6) | |
| Left | 56 (52.3) | 51 (47.7) | 0.22 |
| RT | |||
| Right | 25 (43.9) | 32 (56.1) | |
| Left | 31 (51.7) | 29 (48.3) | 0.46 |
| RT, except IMC/SCL | |||
| Right | 9 (45.0) | 11 (55.0) | |
| Left | 10 (50.0) | 10 (50.0) | 1.00 |
| RT to IMC/SCL | |||
| Right | 16 (43.2) | 21 (56.8) | |
| Left | 21 (53.8) | 18 (46.2) | 0.37 |
| Ischaemic stroke and ill-defined cerebrovascular lesion | |||
| Right | 45 (43.7) | 58 (56.3) | |
| Left | 52 (53.6) | 45 (46.4) | 0.20 |
| RT | |||
| Right | 22 (44.9) | 27 (55.1) | |
| Left | 29 (52.7) | 26 (47.3) | 0.44 |
| RT, except IMC/SCL | |||
| Right | 6 (37.5) | 10 (62.5) | |
| Left | 10 (50.0) | 10 (50.0) | 0.52 |
| RT to IMC/SCL | |||
| Right | 16 (48.5) | 17 (51.5) | |
| Left | 19 (55.9) | 15 (44.1) | 0.63 |
BC=breast cancer; IMC=internal mammary chain; RT=radiotherapy; SCL=supraclavicular.