Lung Volume Subdivisions | MMRC |
| ||
0 (n = 76) | 2 (n = 147) | 4 (n = 108) | P-value†| |
FVC, liters | 3.6 ± 1.1 | 3.2 ± 1.0 | 2.6 ± 0.9 | 0.002 |
FVC, % pred | 93.6 ± 19.6 | 87.5 ± 19.2 | 73.8 ± 22.6 | <0.001 |
SVC, liters | 3.8 ± 1.0 | 3.3 ± 1.1 | 2.9 ± 0.9 | 0.009 |
SVC, % pred | 100.0 ± 18.6 | 90.9 ± 20.1 | 79.9 ± 19.6 | <0.001 |
FEV1, liters | 2.1 ± 0.7 | 1.8 ± 0.7 | 1.5 ± 0.7 | 0.005 |
FEV1, % pred | 77.5 ± 19.9 | 67.5 ± 22.1 | 56.6 ± 24.1 | 0.01 |
FEV1/FVC | 0.60 ± 0.09 | 0.55 ± 0.13 | 0.54 ± 0.11 | <0.001 |
TLC, liters | 6.1 ± 1.2 | 6.1 ± 1.5 | 5.6 ± 1.5 | <0.001 |
TLC, % pred | 104.9 ± 21.4 | 110.4 ± 18.3 | 103.2 ± 20.7 | <0.001 |
FRC, liters | 3.6 ± 0.8 | 3.8 ± 1.1 | 3.7 ± 1.3 | <0.001 |
FRC, % pred | 113.7 ± 24.7 | 122.0 ± 30.3 | 121.1 ± 35.7 | <0.001 |
RV, liters | 2.5 ± 0.8 | 2.9 ± 1.1 | 2.9 ± 1.2 | <0.001 |
RV, % pred | 126.3 ± 37.6 | 151.9 ± 50.6 | 157.2 ± 57.6 | <0.001 |
IC, liters | 2.5 ± 0.8 | 2.4 ± 0.8 | 1.9 ± 0.7 | <0.001 |
IC, % pred | 96.1 ± 23.8 | 95.4 ± 22.9 | 80.6 ± 25.2 | <0.001 |
IC/SVC | 0.67 ± 0.11 | 0.73 ± 0.12 | 0.71 ± 0.14 | <0.001 |
IC/TLC | 0.40 ± 0.07 | 0.39 ± 0.09 | 0.35 ± 0.10 | <0.001 |
FRC/TLC | 0.60 ± 0.07 | 0.61 ± 0.09 | 0.65 ± 0.10 | <0.001 |
RV/TLC | 0.41 ± 0.10 | 0.47 ± 0.11 | 0.51 ± 0.12 | <0.001 |
SVC/FVC | 1.02 ± 0.06 | 1.02 ± 0.11 | 1.03 ± 0.08 | <0.001 |