Characteristics of Subjects

CharacteristicsMean ± SD/Frequency (%)p-value
NSCLCControlTotal
Age (years)58.49 ± 11.2340.77 ± 15.5752.85 ± 15.16< 0.001*
      18–50 years old9 (12%)20 (57.1%)29 (26.4%)< 0.001#
      > 50 years old66 (88%)15 (42.9%)81 (73.6%)
Gender
      Male50 (66.7%)21 (60%)71 (64.5%)0.496#
      Female25 (33.3%)14 (40%)39 (35.5%)
Smoking status
      Active smoker45 (60%)11 (31.4%)56 (50.9%)0.001#
      Passive smoker17 (22.7%)3 (8.6%)20 (18.2%)
      Non smoker13 (17.3%)21 (60%)34 (30.9%)
Brinkman indexa
      Mild smoker12 (26.6%)8 (72.8%)20 (18.2%)0.015#
      Moderate smoker15 (33.4%)2 (18.2%)17 (15.4%)
      Severe smoker18 (40%)1 (9%)19 (17.2%)
Comorbidityb
      Tuberculosis24 (32%)18 (51.4%)42 (38.2%)-
      Malignancy2 (2.7%)1 (2.6%)3 (2.7%)
      Diabetes mellitus10 (13.3%)7 (20%)17 (15.4%)
      Hypertension19 (25.3%)5 (14.3%)24 (21.8%)

a Subject of an active smoker; b subjects with the mentioned disease; * t-independent test; # chi-square test; SD: standard deviation; NSCLC: Non-small Cell Lung Carcinoma; -: not calculable