From: Epidemiology, genetics, and subtyping of preserved ratio impaired spirometry (PRISm) in COPDGene
(a) Non-Hispanic White subjects | (b) African American subjects | |||||
---|---|---|---|---|---|---|
Feature | Cluster 1 | Cluster 2 | Cluster 3 | Cluster 1 | Cluster 2 | Cluster 3 |
n | 227 | 291 | 137 | 171 | 167 | 142 |
Age | 57.9 (8.2) | 62.2 (8.1) | 59.2 (9.4) | 52.9 (5.8) | 54.6 (6.1) | 52.6 (5.3) |
Sex (% male) | 34.8 | 45.7 | 51.1 | 47.4 | 56.9 | 45.1 |
Body Mass Index | 30.9 (6.4) | 30.4 (6.3) | 36.2 (7.1) | 32.0 (6.8) | 27.3 (6.0) | 35.7 (8.4) |
Current smoker | 53.3 | 43.6 | 49.6 | 84.8 | 83.8 | 80.3 |
Pack-years | 42.8 (22.6) | 46.6 (24.5) | 50.9 (29.7) | 35.6 (18.5) | 39.6 (24.0) | 38.1 (21.4) |
FEV1% predicted | 74.2 (4.3) | 73.4 (5.3) | 60.5 (7.8) | 73.3 (5.1) | 72.7 (6.2) | 62.5 (8.9) |
FEV1/FVC | 0.80 (0.04) | 0.74 (0.03) | 0.74 (0.04) | 0.83 (0.04) | 0.74 (0.03) | 0.75 (0.03) |
FEF 25–75 | 2.21 (0.65) | 1.58 (0.47) | 1.41 (0.47) | 2.38 (0.71) | 1.58 (0.50) | 1.42 (0.43) |
Resting O2 saturation | 96.4(2.3) | 96.3 (2.1) | 95.2 (2.9) | 97.1 (2.2) | 97.1 (2.3) | 96.6 (2.7) |
TLCCT*% predicted | 79.4 (9.8) | 90.4 (10.7) | 74.4 (12.7) | 71.0 (11.1) | 83.6 (12.3) | 71.6 (12.3) |
Percent emphysema | 0.6 (0.7) | 2.6 (2.7) | 0.9 (1.1) | 0.5 (0.6) | 2.7 (4.5) | 0.8 (1.0) |
Segmental Wall Area% | 62.0 (2.5) | 60.6 (2.3) | 64.7 (2.6) | 62.4 (2.8) | 61.9 (2.9) | 65.7 (2.5) |
Percent Gas Trapping | 6.5 (6.0) | 13.5 (8.6) | 9.8 (7.1) | 7.2 (7.3) | 14.8 (13.5) | 9.4 (7.5) |
Diabetes Mellitus | 18.5 | 14.4 | 36.5 | 22.8 | 15.6 | 27.5 |
Hypertension | 36.6 | 47.4 | 56.2 | 53.8 | 51.5 | 54.2 |
Hyperlipidemia | 45.4 | 58.8 | 59.9 | 31.0 | 24.0 | 29.6 |
Chronic bronchitis | 16.3 | 15.8 | 32.9 | 11.1 | 19.2 | 14.8 |
Bronchodilator Response† | 11.5 | 13.5 | 22.2 | 11.4 | 9.2 | 20.1 |
MMRC‡ | 1.154 (1.32) | 1.13 (1.29) | 1.95 (1.50) | 1.63 (1.53) | 1.57 (1.47) | 1.96 (1.53) |
6 minute walk distance | 1386.5 (347.1) | 1392.2 (320.4) | 1132.6 (390.2) | 1219.9 (349.4) | 1279.5 (338.1) | 1099.2 (342.1) |