Table 2 Perioperative profiles of the study patients.
Variables | Overall cohort | IPTW-adjusted cohort | ||||
|---|---|---|---|---|---|---|
VATS (n = 121) | Thoracotomy (n = 147) | p value | VATS (n = 121) | Thoracotomy (n = 147) | p value | |
Hospital days, days | 7.3 ± 4.7 | 9.2 ± 4.4 | 0.001 | 7.7 ± 4.6 | 9.1 ± 4.2 | 0.028 |
Resection margins | 0.079 | 0.488 | ||||
R0 | 114 (94.2) | 128 (87.1) | 112 (92.6) | 133 (90.5) | ||
R1 | 7 (5.8) | 19 (12.9) | 9 (7.4) | 14 (9.5) | ||
Lymph node dissection | ||||||
Lymph nodes harvested, n | 31.6 ± 14.4 | 30.0 ± 10.0 | 0.634 | 31.9 ± 13.3 | 29.4 ± 9.6 | 0.100 |
Positive lymph nodes, n | 4.7 ± 5.2 | 4.3 ± 5.9 | 0.316 | 4.6 ± 5.1 | 4.7 ± 5.9 | 0.980 |
Pathological tumor size | 33.3 ± 12.1 | 36.7 ± 11.4 | 0.018 | 36.0 ± 12.1 | 35.3 ± 11.4 | 0.684 |
8th pathologic T factor | 0.283 | 0.543 | ||||
T1 | 35 (28.9) | 31 (21.1) | 25 (20.7) | 40 (27.2) | ||
T2 | 71 (58.7) | 92 (62.6) | 77 (63.6) | 86 (58.5) | ||
T3 | 15 (12.4) | 24 (16.3) | 19 (15.7) | 21 (14.3) | ||
8th pathologic N factor | 0.365 | 0.847 | ||||
N0 | 30 (24.8) | 42 (28.6) | 31 (25.6) | 37 (25.2) | ||
N1 | 8 (6.6) | 16 (10.9) | 8 (6.6) | 13 (8.8) | ||
N1a | 7 (5.8) | 15 (10.2) | 7 (5.8) | 12 (8.1) | ||
N1b | 1 (0.8) | 1 (0.7) | 1 (0.8) | 1 (0.7) | ||
N2 | 83 (68.6) | 89 (60.5) | 82 (67.8) | 97 (66.0) | ||
N2a1 | 18 (14.9) | 13 (8.8) | 14 (11.6) | 15 (10.2) | ||
N2a2 | 28 (22.3) | 39 (26.5) | 32 (26.4) | 39 (26.5) | ||
N2b | 38 (31.4) | 37 (25.2) | 36 (29.8) | 43 (29.3) | ||
8th pathologic stage | 0.452 | 0.882 | ||||
I | 20 (16.5) | 27 (18.4) | 18 (14.9) | 24 (16.3) | ||
II | 17 (14.0) | 28 (19.0) | 20 (16.5) | 22 (15.0) | ||
III | 84 (69.4) | 92 (62.6) | 83 (68.6) | 101 (68.7) | ||
Adjuvant chemotherapy | 65 (53.7) | 77 (52.4) | 0.924 | 66 (54.5) | 69 (46.9) | 0.287 |
Time to start chemotherapy, days | 36.7 ± 18.1 | 43.4 ± 22.1 | 0.036 | 36.9 ± 14.3 | 43.1 ± 22.3 | 0.033 |
Adjuvant radiotherapy | 55 (45.5) | 68 (46.3) | 0.993 | 56 (46.3) | 66 (44.9) | 0.829 |
