| Asthma | COPD | ||
ρ | P | ρ | P | |
%CSA < 5 (%) | 0.334 | 0.162 | −0.433 | 0.003 |
i/e-LV ratio | −0.252 | 0.313 | −0.371 | 0.011 |
FEV1% predicted | −0.085 | 0.701 | −0.474 | 0.001 |