N category | Clinically staged tumours | Surgically treated patients | ||||
Clinically staged tumours | Pathologically staged tumours | |||||
Patients n | 5-yr survival rate (%) | Patients n | 5-yr survival rate (%) | Patients n | 5-yr survival rate (%) | |
N0 | 19806 | 42 | 15711 | 50 | 16530 | 56 |
N1 | 3631 | 29# | 2471 | 39# | 5770 | 38# |
N2 | 11619 | 16# | 4277 | 31# | 5770 | 22# |
N3 | 3209 | 7# | 356 | 21# | 201 | 6# |
#: p<0.0001 compared with preceding row.