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Table 1 The relationships between operation method and clinicopathological characteristics

From: Natural air leak test without submergence for spontaneous pneumothorax

Characteristic Total New % Classical p-value
All cases 214 35 16.4 179  
Age (years)      
   < 28 102 19 18.6 83  
   ≥ 28 112 18 16.1 94 0.391
Gender      
   Male 182 31 17.0 151  
   Female 32 4 12.5 28 0.523
Smoking      
   Exist 75 11 14.7 64  
   None 139 24 17.3 115 0.624
Lesion site      
   Right 103 20 19.4 83  
   Left 111 15 13.5 96 0.243
Lesion location      
   Top 177 28 15.8 149  
   Other than top 37 7 18.9 30 0.643
Comorbidities      
   Yes 44 6 13.6 38  
   No 170 29 17.1 141 0.584
ISPa      
   Yes 50 10 20.0 40  
   No 164 25 15.2 139 0.426
CSPb      
   Yes 37 8 21.6 29  
   No 177 27 15.3 150 0.341
Operation for ISP      
   Yes 22 5 22.7 17  
   No 192 30 15.6 162 0.394
  1. a ISP: ipsilateral spontenious pneumothorax, b CSP: contralateral spontenious pneumothorax.