Table 3.
Correlation Between Serum CC16 Concentration and Pulmonary Function in Patients with Stable COPD (n=98)
| Items | Correlation Analysis | ||
|---|---|---|---|
| CC16 and FEV1/FVC | CC16 and FEV1% Predicted | ||
| Pearson correlation | Correlation coefficient | 0.387 | 0.361 |
| P value | 0.002 | <0.001 | |
| R Square | 0.173 | 0.121 | |
| Analysis of Variance | Mean square | 0.335 | 0.356 |
| F value | 8.588 | 14.4 | |
| P value | 0.004 | <0.001 | |
| Regression coefficient | Regression coefficients | 0.02 | 0.14 |
| T value | 2.931 | 3.795 | |
| P value | 0.004 | <0.001 | |
| 95% confidence interval | 0.001–0.003% | 0.001–0.004% | |
| Equation | ^Y=0.26+0.02X | ^Y=0.03+0.14X | |
Abbreviations: CC16, Clara cell secretory protein; FEV1, the value of forced expiratory volume in one second; FVC, forced vital capacity.