Table 3.
Correlation between pulmonary functions and scale scores in pneumoconiosis patients with the complication of COPD
| Pre-FEV1 | FEV1/FVC | DLCO | DLCO% | |
|---|---|---|---|---|
| Cough | −0.24(0.01)** | − 0.18(0.06) | − 0.10(0.29) | −0.11(0.22) |
| Sputum | −0.21(0.02)* | − 0.13(0.16) | − 0.00(0.99) | − 0.04(0.67) |
| Wheezing | − 0.41(0.00)** | − 0.28(0.00)** | − 0.16(0.08) | − 0.22(0.02)* |
| Dyspnea | − 0.22(0.02)* | − 0.13(0.16) | − 0.29(0.00)** | − 0.23(0.01)* |
| Chest tightness | − 0.13(0.17) | − 0.08(0.42) | −0.02(0.83) | − 0.02(0.80) |
| CAT | −0.35(0.00)** | − 0.27(0.00)** | −0.16(0.08) | − 0.16(0.08) |
| CCQ | −0.39(0.00)** | − 0.37(0.00)** | −0.14(0.14) | − 0.15(0.10) |
Spearman correlation
*p<0.05, **p<0.01