Stage | Limited rLN dataset | Stage | Adequate rLN dataset | P value (Limited vs. Adequate rLN dataset) | Stage | Combined rLN dataset | |||
---|---|---|---|---|---|---|---|---|---|
n (%) | 5-year OS (%) | n (%) | 5-year OS (%) | n (%) | 5-year OS (%) | ||||
pN (n = 2414) |  | pN (n = 5497) |  |  | pN (n = 7911) |  | |||
 N0 | 1063 (44.0) | 72.2 |  | 1807 (32.9) | 84.0 |  < 0.001 |  | 2870 (36.3) | 79.6 |
 N1 | 518 (21.5) | 45.5 |  | 885 (16.1) | 65.5 |  < 0.001 |  | 1403 (17.7) | 57.6 |
 N2 | 558 (23.1) | 32.0 |  | 989 (18.0) | 51.2 |  < 0.001 |  | 1547 (19.6) | 44.0 |
 N3a | 275 (11.4) | 13.2 |  | 1132 (20.6) | 30.3 |  < 0.001 |  | 1407 (17.8) | 26.9 |
 N3b | – | – |  | 684 (12.4) | 14.9 | – |  | 684 (8.6) | 14.9 |
*pN’ (n = 2164) |  | *pN’ (n = 5747) |  |  | pN’ (n = 7911) |  | |||
 N’0 | – | – |  | 2057 (35.8)* | 85.5 | – |  | 2057 (26.0) | 85.5 |
 N’1 | 813 (37.6) | 65.3 |  | 885 (15.4) | 65.5 | 0.913 |  | 1698 (21.5) | 65.3 |
 N’2 | 518 (23.9) | 45.5 |  | 989 (17.2) | 51.2 | 0.018 |  | 1507 (19.0) | 49.1 |
 N’3a | 558 (25.8) | 32.0 |  | 1132 (19.7) | 30.3 | 0.437 |  | 1690 (21.4) | 30.9 |
 N’3b | 275 (12.7) | 13.2 |  | 684 (11.9) | 14.9 | 0.582 |  | 959 (12.1) | 14.4 |
pTNM (n = 2414) |  | pTNM (n = 5497) |  |  | pTNM (n = 7911) |  | |||
 IA | 250 (10.4) | 95.9 |  | 551 (10.0) | 96.9 | 0.466 |  | 801 (10.1) | 96.6 |
 IB | 227 (9.4) | 77.3 |  | 508 (9.2) | 87.8 |  < 0.001 |  | 735 (9.3) | 84.4 |
 IIA | 234 (9.7) | 66.4 |  | 465 (8.5) | 80.2 |  < 0.001 |  | 699 (8.8) | 75.5 |
 IIB | 587 (24.3) | 57.3 |  | 912 (16.6) | 66.8 |  < 0.001 |  | 1499 (18.9) | 63.0 |
 IIIA | 785 (32.5) | 34.2 |  | 1291 (23.5) | 51.1 |  < 0.001 |  | 2076 (26.2) | 44.5 |
 IIIB | 294 (12.2) | 14.4 |  | 1046 (19.0) | 30.0 |  < 0.001 |  | 1340 (16.9) | 26.4 |
 IIIC | 37 (1.5) | 5.0 |  | 724 (13.2) | 14.0 | 0.066 |  | 761 (9.6) | 13.6 |
*pTN’M (n = 2164) |  | *pTN’M (n = 5747) |  |  | pTN’M (n = 7911) |  | |||
 IA’ | – | – |  | 801 (13.9)* | 96.6 | – |  | 801 (10.1) | 96.6 |
 IB’ | – | – |  | 508 (8.8) | 87.8 | – |  | 508 (6.4) | 87.8 |
 IIA’ | 227 (10.5) | 77.3 |  | 465 (8.1) | 80.2 | 0.657 |  | 692 (8.7) | 79.2 |
 IIB’ | 234 (10.8) | 66.4 |  | 912 (15.9) | 66.8 | 0.826 |  | 1146 (14.5) | 66.7 |
 IIIA’ | 890 (41.1) | 51.0 |  | 1291 (22.5) | 51.1 | 0.753 |  | 2181 (27.6) | 51.1 |
 IIIB’ | 515 (23.8) | 30.7 |  | 1046 (18.2) | 30.0 | 0.949 |  | 1561 (19.7) | 30.2 |
 IIIC’ | 298 (13.8) | 11.7 |  | 724 (12.6) | 14.0 | 0.706 |  | 1022 (12.9) | 13.3 |