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Table 2 Comparison of characteristics related to surgical difficulties between the aBVA and VAB cohorts
| Variable | Total (n = 301) | aBVA cohort (n = 109) | VAB cohort (n = 192) | P |
|---|---|---|---|---|
| Maximum tumor diameter (cm, mean ± SD) | 2.83 ± 1.35 | 2.72 ± 1.20 | 2.89 ± 1.42 | 0.530 |
| T stage [cases (%)] | 0.181* | |||
| 1a | 70 (23.3) | 24 (22.0) | 46 (24.0) | |
| 1b | 46 (15.3) | 11 (10.1) | 35 (18.2) | |
| 2a | 139 (46.2) | 58 (53.2) | 81 (42.2) | |
| 2b | 20 (6.6) | 5 (4.6) | 15 (7.8) | |
| 3 | 23 (7.6) | 9 (8.3) | 14 (7.3) | |
| 4 | 3 (1.0) | 2 (1.8) | 1 (0.5) | |
| Incomplete fissure [cases (%)] | 94 (31.2) | 29 (26.6) | 65 (33.9) | 0.192 |
| Intrathoracic adhesion [cases (%)] | 84 (27.9) | 30 (27.5) | 54 (28.1) | 0.911 |
| Number of dissected LN stations (mean ± SD) | 7.13 ± 1.98 | 7.8 ± 1.92 | 6.74 ± 1.91 | <0.001 |
| Number of dissected LNs (mean ± SD) | 21.52 ± 9.42 | 22.95 ± 9.13 | 20.71 ± 9.51 | 0.031 |
