Variable NSCLC patients(%) Healthy Controls(%)
Total no. 136 136
Sex
Males 110(80.9) 110(80.9)
Females 26(19.1) 26(19.1)
Age(Years)
<45 24(17.6) 24(17.6)
>45 112(82.3) 112(82.3)
Smoking status
Non Smoker 33(24.3) 33(24.3)
Smokers 103(75.7) 103(75.7)
Smoking level(pack year)
Mild(< 10) 9(8.9)  
Moderate(< 40) 49(48.5)  
Heavy(> 40) 43(42.6)  
Histological type
SCC 79(58.1)  
ADC 57(41.9)  
TNM stage
Early(I & II) 51(37.5)  
Advanced(III & IV) 85(62.5)  
Distant metastasis
Positive 35(25.7)  
Negative 101(74.3)  
Family history of any cancer
Significant 18(13.2)  
Non significant 118(86.8)  
Cytological type
Squamous cell carcinoma
Well differentiated 43(54.4)  
Moderately differentiated 22(27.8)  
Poorly differentiated 14(17.7)  
Adenocarcinoma
Well differentiated 11(19.3)  
Moderately differentiated 16(28.1)  
Poorly differentiated 30(52.6)  
Malignant pleural effusion
Yes 54(39.7)  
No 82(60.3)  
Table 1: Demographic characteristics of NSCLC patients and cancer free healthy controls.