The Egyptian Journal of Bronchology

Table 2 Pulmonary functions and arterial blood gasses of studied groups

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

		Case	Control	P value
		N = 40	N = 30	P value
FEV1	Range Mean ± SD	23–67 45.8 ± 13.9	77–110 92.7 ± 10.1	< 0.001*
FVC	Range Mean ± SD	23–99 70.5 ± 21.1	80–95 88 ± 4.2	< 0.001*
FEV1\FVC ratio	Range Mean ± SD	21–67 43.8 ± 13.5	70–99 87.7 ± 8.7	< 0.001*
pH	Range Mean ± SD	7.3–7.5 7.4 ± 0.1	7.3–7.5 7.4 ± 0.04	0.451
pO₂	Range Mean ± SD	45–89 63.2 ± 11.6	76–90 85.7 ± 3.6	< 0.001*
pCO₂	Range Mean ± SD	33–76 52.2 ± 12.8	33–39 35.6 ± 2	< 0.001*
HCO₃	Range Mean ± SD	21–35 29.3 ± 4.1	23–28 25.4 ± 1.3	< 0.001*
SO₂	Range Mean ± SD	75–93 82.4 ± 5.6	94–98 96.3 ± 1.2	< 0.001*

Independent samples T test for parametric quantitative data between the two groups
Mann-Whitney test for non-parametric quantitative data between the two groups
* Significance level at P value < 0.05

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