Table 1. General characteristics of the 2 groups of patients with lung cancer.
| Characteristics | Clamping group (n=90) | Control group (n=90) | P value |
|---|---|---|---|
| Males/females | 39/51 | 34/56 | 0.448 |
| Age, mean ± SD, years | 58.1±9.7 | 60.0±9.5 | 0.175 |
| Left/right | 35/55 | 39/51 | 0.545 |
| Upper/lower* | 55/35 | 49/41 | 0.365 |
| Neoadjuvant chemotherapy, n (%) | 7 (7.8) | 5 (5.6) | 0.550 |
| VATS, n (%) | 81 (90.0) | 80 (88.9) | 0.808 |
| SMLD/SS | 47/43 | 57/33 | 0.131 |
| Pleural adhesion, n (%) | 4 (4.4) | 9 (10.0) | 0.150 |
*, right middle lobectomies were counted as lower. SD, standard deviation; VATS, video-assisted thoracoscopic surgery; SMLD, systematic mediastinal lymph node dissection; SS, systematic mediastinal lymph node sampling.