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The correlation between respiratory parameters and oxidative stress biomarkers in the studied groups
| Parameter | FVC | FEV1 | FEV1/FVC | SOD | TAC | MDA |
|---|---|---|---|---|---|---|
| FVC (%) | 1 | – | – | – | – | – |
| FEV1 (%) | 0.60** | 1 | – | – | – | – |
| FEV1/FVC (%) | 0.14 | 0.15 | 1 | – | – | – |
| SOD (U/ml) | 0.24* | 0.43** | 0.07 | 1 | – | – |
| TAC (mM) | 0.21* | 0.30** | 0.21 | 0.23* | 1 | – |
| MDA (µM) | −0.14 | −0.13 | −0.13 | −0.16 | −0.26* | 1 |
Pearson’s correlation *P < 0.05; **P < 0.01
