All patients | Excluding patients with inaccessible LNs | |||||||
---|---|---|---|---|---|---|---|---|
Total | True negative | False negative | P | Total | True negative | False negative | P | |
(n = 705) | (n = 594) | (n = 111) | (n = 681) | (n = 594) | (n = 87) | |||
Age, year | 65.6 ± 8.7 | 66.2 ± 8.5 | 62.4 ± 9.0 | < 0.001 | 65.8 ± 8.6 | 66.2 ± 8.5 | 62.7 ± 8.7 | 0.001 |
Sex, female | 171 (24.3) | 135 (22.7) | 36 (32.4) | 0.029 | 163 (23.9) | 135 (22.7) | 28 (32.2) | 0.054 |
Location of primary tumor | 0.479 | 0.331 | ||||||
Right | 421 (59.7) | 360 (60.6) | 61 (55.0) | 419 (61.5) | 360 (60.6) | 59 (67.8) | ||
Left | 278 (39.4) | 229 (38.6) | 49 (44.1) | 256 (37.6) | 229 (38.6) | 27 (31.0) | ||
Both | 6 (0.9) | 5 (0.8) | 1 (0.9) | 6 (0.9) | 5 (0.8) | 1 (1.1) | ||
Histologic type | 0.255 | 0.230 | ||||||
Adenocarcinoma | 338 (47.9) | 277 (46.6) | 61 (55.0) | 326 (47.9) | 277 (46.6) | 49 (56.3) | ||
Squamous cell carcinoma | 315 (44.7) | 273 (46.0) | 42 (37.8) | 305 (44.8) | 273 (46.0) | 32 (36.8) | ||
Others | 52 (7.4) | 44 (7.4) | 8 (7.2) | 50 (7.3) | 44 (7.4) | 6 (6.9) | ||
Duration of procedure, min | 19.0 ± 7.7 | 19.1 ± 7.8 | 18.1 ± 7.0 | 0.229 | 19.0 ± 7.8 | 19.1 ± 7.8 | 18.5 ± 7.4 | 0.353 |
Combination of EUS | 69 (9.8) | 55 (9.3) | 14 (12.6) | 0.275 | 66 (9.7) | 55 (9.3) | 11 (12.6) | 0.319 |
Numbers of evaluated lesions | ||||||||
Total | 3.0 ± 1.0 | 3.0 ± 1.0 | 2.8 ± 1.0 | 0.191 | 3.0 ± 1.0 | 3.0 ± 1.0 | 2.9 ± 1.0 | 0.510 |
Mediastinal LNs | 2.5 ± 0.9 | 2.5 ± 0.9 | 2.4 ± 0.9 | 0.311 | 2.5 ± 0.9 | 2.5 ± 0.9 | 2.4 ± 0.9 | 0.677 |
Hilar LNs | 0.5 ± 0.7 | 0.5 ± 0.7 | 0.4 ± 0.6 | 0.590 | 0.4 ± 0.7 | 0.5 ± 0.7 | 0.4 ± 0.6 | 0.733 |
Lung parenchymal lesions | 29 (4.1) | 25 (4.2) | 4 (3.6) | 1.000 | 28 (4.1) | 25 (4.2) | 3 (3.4) | 1.000 |
Time interval between EBUS/EUS-NA and surgery, day | 19.5 ± 14.6 | 19.4 ± 14.7 | 19.6 ± 14.1 | 0.877 | 19.2 ± 14.3 | 19.4 ± 14.7 | 17.7 ± 10.9 | 0.307 |
Operator | 0.388 | 0.533 | ||||||
A | 290 (41.1) | 240/290 (82.8) | 50/290 (17.2) | 282 (41.4) | 240/282 (85.1) | 42/282 (14.9) | ||
B | 219 (31.1) | 187/219 (85.4) | 32/219 (14.6) | 209 (30.7) | 187/209 (89.5) | 22/209 (10.5) | ||
C | 84 (11.9) | 66/84 (78.6) | 18/84 (21.4) | 79 (11.6) | 66/79 (83.5) | 13/79 (16.5) | ||
D | 67 (9.5) | 60/67 (89.6) | 7/67 (10.4) | 66 (9.7) | 60/66 (90.9) | 6/66 (9.1) | ||
E | 33 (4.7) | 30/33 (90.9) | 3/33 (9.1) | 33 (4.8) | 30/33 (90.9) | 3/33 (9.1) | ||
F | 12 (1.7) | 11/12 (91.7) | 1/12 (8.3) | 12 (1.8) | 11/12 (91.7) | 1/12 (8.3) |