| Stratum 1 (n = 75) | Stratum 2 (n = 75) | Stratum 3 (n = 75) | Stratum 4 (n = 75) |
---|---|---|---|---|
Age (years) | 54.3 (9.5) | 59.8 (9.3) | 64.8 (8.5) | 64.8 (6.7) |
Sex, Male (%) | 32 (42.7%) | 56 (74.7%) | 64 (85.3%) | 57 (76.0%) |
Race, White (%) | 49 (65.3%) | 50 (66.7%) | 66 (88.0%) | 63 (84.0%) |
BMI (kg/m2) | 28.4 (5.5) | 28.3 (4.6) | 27.8 (4.0) | 26.6 (4.8) |
Smoking Pack-years | 0 (0) | 40.6 (17.5) | 49.8 (22.4) | 56.5 (21.9) |
Hypertension (%) | 24 (32%) | 31 (41.3%) | 42 (56%) | 40 (53.3%) |
Diabetes mellitus (%) | 4 (5.3%) | 10 (13.3%) | 19 (25.3%) | 10 (13.3%) |
FEV1 (L) | 3.06 (0.69) | 3.24 (0.71) | 2.79 (0.62) | 1.23 (0.26) |
FEV1% pred | 102.2 (12.1) | 101.1 (11.2) | 87.0 (15.8) | 39.8 (8.1) |
FVC (L) | 3.76 (0.90) | 4.18 (0.92) | 4.46 (0.90) | 3.20 (0.76) |
FVC %pred | 97.8 (11.1) | 99.9 (11.1) | 104.9 (15.6) | 77.5 (14.4) |
FEV1/FVC | 0.82 (0.05) | 0.78 (0.05) | 0.62 (0.06) | 0.39 (0.09) |
Percentage Emphysema | 1.6 (1.7) | 2.0 (1.8) | 5.2 (5.1) | 17.6 (11.4) |
Pi10 | 3.67 (0.09) | 3.68 (0.07) | 3.70 (0.08) | 3.74 (0.08) |
CAC | 2.0 (2.8) | 3.6 (3.5) | 6.5 (4.2) | 6.5 (4.0) |
Statinsa (%) | 19 (25.3%) | 25 (33.3%) | 45 (60.0%) | 32 (42.7%) |
Centrilobular Emphysema (%) | ||||
 Mild (yes/no) (%) | 3 (4%) | 13 (17.3%) | 20 (26.7%) | 8 (10.7%) |
 Moderate (yes/no) (%) | 0 (0%) | 4 (5.3%) | 21 (28%) | 22 (29.3%) |
 Advanced/Confluent (yes/no) (%) | 0 (0%) | 4 (5.3%) | 17 (22.7%) | 42 (56%) |
 Substantial Paraseptal Emphysema (yes/no) (%) | 0 (0%) | 10 (13.3.%) | 16 (21.3%) | 13 (17.3%) |
 Definite Bronchial Wall Thickening (yes/no) (%) | 0 (0%) | 5 (6.7%) | 17 (22.7%) | 29 (38.7%) |