Table 3. Multiple Linear Regression Analysis for CT/Clinical Parameters to Predict FEV1/FVC.
| CT/Clinical Parameters | Coefficient (P) |
|---|---|
| All patients | |
| EI | -0.44 (< 0.001) |
| Pi10 | -3.03 (< 0.001) |
| BMI | 0.37 (0.006) |
| Intercept | 60.48 |
| GOLD I and II (Group 1) | |
| EI | -0.31 (< 0.001) |
| Pi10 | -2.10 (0.003) |
| BMI | 0.35 (0.01) |
| Intercept | 57.28 |
| GOLD III and IV (Group 2) | |
| EI | 0.20 (< 0.001) |
| Intercept | 215.86 |
Stepwise algorithm selected above parameters as predictors of FEV1/FVC in all patients (R2 = 0.38, p < 0.001), Group 1 (R2 = 0.22, p < 0.001) and Group 2 (R2 = 0.37, p < 0.001).