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Table 4 Comparative analysis of demographic and pathological information

From: Genetic polymorphisms in the endothelial nitric oxide synthase gene correlate with overall survival in advanced non-small-cell lung cancer patients treated with platinum-based doublet chemotherapy

  No. of bb genotype pts. No. of a-allele carriers P
Gender    
   Female 35 7 P = 0.63
   Male 52 14  
Age    
   <70 64 15 P > 0.9
   70 or older 23 6  
ECOG PS    
   0 17 6 P = 0.38
   1 70 15  
Smoking Status    
   Never or Light 29 7 P > 0.9
   Current or Former 58 14  
Clinical Stage    
   III 31 5 P = 0.44
   IV 56 16  
Histology    
   Adenocarcinoma 68 18 P = 0.56
   Non-adenocarcinoma 19 3  
EGFR mutation    
   Activating mutation 19 2 P = 0.30
   Wild type 9 4  
   Unknown 59 15  
Thoracic radiotherapy    
   Yes 17 3 P = 0.76
   No 70 18