Relation between node positivity (N+) and different tumour pathological parameters in the 1075 patients
| Examined parameters | N+/presence of parameter (%) | N+/absence of parameter (%) | RR (CI) |
|---|---|---|---|
| CI, confidence interval; RR, relative risk. | |||
| Vascular invasion | 291/614 (47.4%) | 82/461 (17.8%) | 4.1 (3.1 to 5.5) |
| Grades 2–3 | 307/779 (39.4%) | 66/292 (22.6%) | 2.2 (1.6 to 3.0) |
| Multicentricity | 35/67 (52.2%) | 338/1008 (33.5%) | 2.1 (1.3 to 3.5) |
| CD31 >100 vessels/×20 field | 145/360 (40.3%) | 173/545 (31.7%) | 1.4 (1.1 to 1.9) |