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Table 2 The relationships between operation method and intraoperative factors

From: Natural air leak test without submergence for spontaneous pneumothorax

Characteristic Total New % Classical p-value
Approach      
   VATS 189 32 16.9 157  
   thoracotomy 25 3 12.0 22 0.531
Covering      
   Use 173 28 16.2 145  
   Non-use 41 7 17.1 34 0.890
Surgeon      
   Consultant 103 13 12.6 90  
   Trainee 111 22 19.8 89 0.155
Operation time (min)   99.4 (40-315)   130.2 (35-285) 0.046