| 
      Definition of abbreviations: BMI= Body Mass Index, FEV1= Forced Expiratory
    Volume in one second, 
    DLCO= Carbon Monoxide Diffusing Capacity, PVD = Peripheral Vascular Disease, 
    CAD = Coronary Artery Disease
        | Variables | Non-OSA (n=295) | OSA (n=25) | P-Value |  
        | Age | 67.2 ± 12.2 | 64.3 ± 11.4 | 0.17 |  
        | Gender    n (%) Male
 | 170    (57.6) | 11    (44.0) | 0.18 |  
        | Race    n (%) Caucasian
 Black
 | 242(82.0)
 53(17.8)
 | 23(92.0)
 2(8.0)
 | 0.28 |  
        | BMI    kg/m2 | 27.11 ± 6.12 | 30.54 ± 5.03 | 0.002 |  
        | Smoking    status n (%) Never
 Quit >1month
 Current
 | 63(21.4)
 144    (48.9)
 88    (29.8)
 | 6    (24.0)
 15    (60.0)
 4    (16.0)
 | 0.34 |  
        | FEV1    % | 85.4 ± 18.1 | 81.0 ± 19.5 | 0.26 |  
        | DLCO    % | 80.6 ± 22.3 | 83.0 ± 24.1 | 0.74 |  
        | Comorbidities    n (%): |  |  |  |  
        | Diabetes | 42(14.2) | 3(12) | >0.99 |  
        | Hypertension | 171(56) | 16(64) | 0.56 |  
        | PVD | 23(7.5) | 0 | 0.23 |  
        | CAD | 54(17.7) | 8(32) | 0.11 |  |