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VATS辅助单孔切口进行肺癌手术的患者的术后特征（Mean±SD）
Postoperative characteristics of patients underwent VATS assisted uni-portal incision(Mean±SD)
| VATS assisted uni-portal incision | P | ||
| General drainage group (n=48) | Anhydrous negative pressure drainage group (n=19) | ||
| Postoperative hospital stay (d) | 4.9±1.6 | 3.8±1.4 | 0.61 |
| Total hospital stay (d) | 11.9±2.7 | 11.6±2.8 | 0.99 |
