Table 1.
Factor | 4L dissection | Non‐4L dissection | P value |
---|---|---|---|
Gender | |||
Male | 130 | 61 | 0.969 |
Female | 40 | 19 | |
Age (years) | 58.45 ± 8.54 | 60.31 ± 9.10 | 0.117 |
Tumor location | |||
Upper | 22 | 8 | 0.381 |
Middle | 114 | 50 | |
Lower | 34 | 22 | |
P stage | |||
I | 43 | 19 | 0.665 |
II | 54 | 30 | |
III | 73 | 31 | |
Tumor invasion degree | |||
T1 | 39 | 26 | 0.263* |
T2 | 33 | 16 | |
T3 | 94 | 35 | |
T4 | 4 | 3 | |
Number of retrieved nodes | |||
Mediastinal nodes | 21.06 ± 6.89 | 14.90 ± 5.65 | <0.001 |
Abdominal nodes | 13.10 ± 6.71 | 11.73 ± 4.89 | 0.102 |
Total operation time (minutes) | |||
Chest | 130 (30) | 125 (30) | 0.675 |
Abdomen and neck | 110 (22.5) | 120 (20) | 0.920 |
Blood loss total (mL) | |||
Thorax | 200 (112.5) | 150 (100) | 0.009 |
Abdominal and neck | 30 (30) | 30 (10) | 0.124 |
Conversion (cases) | |||
Thoracotomy | 6 | 3 | 1.000* |
Length of hospital stay | 13 (5) | 12 (5) | 0.261 |
*Fisher's exact test.