Table 1 Comparison between stable COPD patients and controls regarding laboratory data 

CRP (mg/dL), mean ± SD

4.06 ± 2.23

1.73 ± 1.25

0.0002*

TNF-α (pg/mL), mean ± SD

19.8 ± 7.47

11.07 ± 3.30

0.0018

Copper (mg/dL), mean ± SD

162 ± 34.63

120 ± 27.65

0.04*

Zinc (mg/dL), mean ± SD

140 ± 45

100 ± 24.2

0.034*

Cu/Z ratio, mean ± SD

1.18 ± 0.2

1.23 ± 0.12

0.4

Na (mmol/L), mean ± SD

139 ± 5.03

142.3 ± 2.05

0.024*

K (mmol/L), mean ± SD

3.96 ± 0.52

4.34 ± 0.24

0.039*

Mg (mmol/L), mean ± SD

2.7 ± 1.52

3.64 ± 1.45

0.044*