Table 3.

Characteristics Comparison Between COPD with or Without OSA

Item	COPD Subject with OSA (70)	COPD Subject Without OSA (54)	p
WBC	6.46 (4.96,8.41)	6.52 (5.90,8.16)	0.502
Neutrophils, %	66.50 (60.18,74.48)	64.34 (57.01,76.70)	0.573
Eosinophils	0.14 (0.08,0.25)	0.12 (0.03,0.26)	0.343
Eosinophils, %	2.10 (1.20,3.76)	1.48 (0.33,4.08)	0.146
Total IgE (IU/mL)	112.50 (35.98,221.00)	110.00 (22.40,520.00)	0.857
CRP (ng/mL)	1.17 (0.45,2.86)	1.03 (0.25,2.45)	0.157
Total T cells	68.70 (59.78,74.24)	70.04 (60.26,76.82)	0.363
CD4+ T cells	39.72 (32.36,43.51)	38.22 (32.76,48.13)	0.760
CD8+ T cells	29.10 (22.33,33.08)	26.50 (22.38,38.14)	0.693
CD4/CD8	1.35 (0.97,1.66)	1.47 (0.95,2.00)	0.484
FeNO	13.00 (10.00,21.00)	19.00 (8.00,36.00)	0.464
AHI	12.00 (7.50,22.00)	1.50 (0.00,3.00)	0.000***
SpO2min	82.00 (78.00,85.00)	85.00 (79.00,88.00)	0.081
T90 (%)	11.00 (1.78,38.28)	2.00 (0.00,7.40)	0.002**

Notes: Data presented as median with 25–75th percentiles. **p < 0.01; ***p < 0.001.

Abbreviations: COPD, chronic obstructive pulmonary disease; OSA, obstructive sleep apnea; WBC, white blood cells; IgE, Immunoglobulin E; CRP, C-reactive protein; FeNO, fractionated exhaled nitric oxide; AHI, apnea-hypopnea index; SpO2min, minimum peripheral capillary oxygen saturation; T90, total sleep time spent with oxygen saturation below 90%.