Table 4.
Multivariate logistic regression analyses for predicting high EFL index
| Variables | Adjusted odds ratio | 95% confidence interval | p value |
|---|---|---|---|
| mMRC scale |
0.969 |
0.412 – 2.282 |
0.9432 |
| Emphysema score |
1.296 |
1.013 – 1.659 |
0.0395 |
| FEV1/FVC (%) |
1.197 |
0.980 – 1.461 |
0.0777 |
| FEF25-75% (% predicted) |
0.752 |
0.590 – 0.960 |
0.0220 |
| FRC (% predicted) |
1.108 |
1.039 – 1.181 |
0.0017 |
| R5 (cmH2O/L/s) |
3.426 |
1.470 – 7.983 |
0.0043 |
| ∆R5 (cmH2O/L/s) | 0.423 | 0.134 – 1.342 | 0.1443 |
Abbreviations: Δ difference between inspiratory and expiratory phases, R5 respiratory system resistance at 5 Hz, EFL expiratory flow limitation, FEV1 forced expiratory volume in 1 second, FVC forced vital capacity, FEF 25-75% forced expiratory flow between 25% and 75% of FVC, FRC functional residual capacity, mMRC modified Medical Research Council.