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Table 7 Correlation between oxidative stress biomarkers, FEV1 and dyspnea grade

From: Chronic obstructive pulmonary disease in non-smokers: role of oxidative stress

  Dyspnea degree
r P value
FEV1 0.479 0.002*
Malondialdehyde − 0.522 0.001*
Superoxide dismutase 0.036 0.827
  1. Spearman’s correlation
  2. *Significance level at P value < 0.05