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Table 4 Univariate analysis for disease-free survival and overall survival

From: Programmed death-ligand 1 expression associated with molecular characteristics in surgically resected lung adenocarcinoma

Variables Median DFS P Median OS P
Gender 0.74   0.44
 Male 44.6   55.6  
 Female 48.9   59.9  
Age 0.23   0.39
 <60 49.3   59.3  
 ≥60 42.9   55.2  
Smoking status 0.16   0.59
 Never 49.0   58.6  
 Former/current 41.3   56.0  
Pathologic stage <0.001   <0.001
 I + II 52.5   66.2  
 III 30.2   45.0  
Adjuvant treatment 0.54   0.76
 Yes 49.7   59.2  
 No 46.5   56.5  
Driver genes 0.23   0.24
 Positive 48.9   58.7  
 Negative 42.0   50.4  
PD-L1 expression 0.014   0.069
 Yes 38.0   52.9  
 No 50.4   62.0