Table 1 : Characteristics of Participants.


      White African Americans

Variable   Cases
(n=359)
  Controls (n=376)   P-value Cases
(n=95)
  Controls (n=102) P-value

Age (Mean, SD)   60.65 (9.4)   59.60 (9.2)     0.127 57.71 (9.3)   58.08 (9.4)   0.7856
Pack Years Smoked (Mean, SD)   46.17 (31.9)   12.49 (20.4)   <0.0001 27.03 (21.8)   12.1 (20.6) <0.0001
Ever Smoker (n, %)   324 (90.3%)   185 (40.2%)   <0.0001 86 (91.5%)   54 (52.9%) <0.0001
Family History of Lung Cancer (n, %)   86 (24.0%)   44 (11.7%)   <0.0001 27 (28.7%)   11 (10.8%)   0.0015
History of COPD* (n, %)   122 (34.0%)   53 (14.1%)   <0.0001 22 (23.4%)   13 (12.8%)   0.0516
BMI (Mean, SD)   26.24 (5.7)   28.71 (6.7)   <0.0001 26.73 (6.7)   32.31 (8.2) <0.0001
Education (Mean, SD)   12.89 (2.3)   14.3 (2.7)   <0.0001 12.33 (2.7)   13.5 (2.6)   0.0303

*COPD: Chronic Obstructive Pulmonary Disease including diagnosis of emphysema and chronic bronchitis

Pathak et al.Journal of Cancer Therapeutics and Research  2014 3:1DOI : 10.7243/2049-7962-3-1