Cases (%) | pN0 (%) | pN1(%) | pN2 (%) | P value | |
---|---|---|---|---|---|
Total | 285 (100) | 204 (71.6) | 30 (10.5) | 51 (17.9) | |
Sex | 0.948 | ||||
Male | 155 (54.4) | 111 (38.9) | 17 (6.0) | 27 (9.5) | |
Female | 130 (45.6) | 93 (32.6) | 13 (4.6) | 24 (8.4) | |
Age | 0.812 | ||||
< 70 | 240 (84.2) | 170 (59.6) | 26 (9.1) | 44 (15.4) | |
≥ 70 | 45 (15.8) | 34 (11.9) | 4 (1.4) | 7 (2.6) | |
Smoking | 0.981 | ||||
No | 166 (58.2) | 119 (41.8) | 17 (6.0) | 30 (10.5) | |
Yes | 119 (41.8) | 85 (29.8) | 13 (4.6) | 21 (7.3) | |
Type of surgery | 0.199 | ||||
Open | 170 (59.6) | 115 (40.4) | 20 (7.0) | 35 (12.3) | |
VATS | 115 (40.4) | 89 (31.2) | 10 (3.5) | 16 (5.6) | |
Excision site | 0.364 | ||||
Lobectomy | 280 (98.2) | 201 (70.5) | 30 (10.5) | 49 (17.2) | |
Pneumonectomy | 5 (0.8) | 3 (1.1) | 0 (0) | 2 (0.7) | |
Tumor location | 0.967 | ||||
Right upper | 79 (27.7) | 56 (19.6) | 8 (2.8) | 15 (5.3) | |
Right median | 26 (9.1) | 21 (7.4) | 2 (0.7) | 3 (1.1) | |
Right lower | 46 (16.2) | 33 (11.6) | 5 (1.8) | 8 (2.8) | |
Left upper | 77 (27.0) | 54 (18.9) | 9 (3.1) | 14 (4.7) | |
Left lower | 40 (14.0) | 28 (9.8) | 5 (1.8) | 7 (2.6) | |
Others | 17 (6.0) | 12 (4.2) | 1 (0.4) | 1 (0.4) | |
Histology | 0.038 | ||||
Adenocarcinoma | 232 (81.4) | 163 (57.2) | 26 (9.1) | 43 (15.1) | |
Squamous cell carcinoma | 35 (12.3) | 28 (9.8) | 4 (1.4) | 3 (1.1) | |
Others | 18 (6.3) | 13 (4.6) | 0 (0) | 5 (1.7) | |
Histologic differentiation | < 0.001 | ||||
Poorly differentiated | 96 (33.7) | 57 (20) | 8 (2.8) | 31 (10.9) | |
Moderately differentiated | 153 (53.7) | 13 (4.6) | 21 (7.4) | 19 (6.7) | |
Well differentiated | 36 (12.6) | 34 (11.9) | 1 (0.4) | 1 (0.3) | |
Visceral pleural invasion | 0.752 | ||||
Absent | 167 (58.6) | 120 (42.1) | 19 (6.7) | 28 (9.8) | |
Present | 118 (41.4) | 84 (29.5) | 11 (3.9) | 23 (8.0) |