Table 3. The correlation of important oscillometry parameters in early diagnosis of COPD.
| Parameters | Pearson Correlation | p |
| Z5 & R5 | 0.926 | <0.001 |
| Z5 & R20 | 0.882 | <0.001 |
| R5 & R20 | 0.949 | <0.001 |
| Parameters | Pearson Correlation | p |
| Z5 & R5 | 0.926 | <0.001 |
| Z5 & R20 | 0.882 | <0.001 |
| R5 & R20 | 0.949 | <0.001 |