Table 3.
Multiple linear regression analysis to determine the factors that affect the serum concentration of IL-32 in stable COPD (N = 116).
| Items | Multiple linear regression analysis for IL-32 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Unstandardized coefficients | Variance analysis | Standardized coefficients | T value | p value | 95% confidence interval for B | ||||
| Partial regression analysis (B) | SE | F value | p value | Beta value | Lower bound | Upper bound | |||
| GOLD grading (X1) | 16.62 | 5.03 | 10.86 | 0.001 | 0.29 | 3.29 | 0.001 | 6.63 | 26.61 |
| Clinical history (X2) | 10.53 | 2.41 | 6.53 | < 0.001 | 0.21 | 1.853 | 0.023 | 0.03 | 3.52 |
| FEV1/FVC (X3) | − 110.15 | 15.82 | 11.21 | 0.001 | − 0.30 | − 3.348 | 0.001 | − 175.16 | − 44.93 |
| Regression equation | ^Y = 32.1 + 16.62X1 + 10.53X2 − 110.15X3 | ||||||||
GOLD Global Initiative for Chronic Obstructive Lung Disease, IL-32 interleukin-32, FEV1 the value of forced expiratory volume in one second, FVC forced vital capacity.