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. Author manuscript; available in PMC: 2015 Dec 7.
Published in final edited form as: Sleep Med Clin. 2014 Sep;9(3):365–379. doi: 10.1016/j.jsmc.2014.05.008

Table 1.

Characteristics and physiologic measures of patients with COPD only, OSA only, and Overlap Syndrome. (Adapted from Resta, 2002).54

COPD
Group
(n = 32)		 Overlap
Group
(n = 29)		 Pure OSA
Group
(n = 152)
Age (y) 60.1 ± 10.4 57.2 ± 9.5 48.9 ± 12.9
Weight (kg) 87.6 ± 17.5 102.2 ± 20.6 106.8 ± 28.8
BMI (kg/m2) 31 ± 7 36 ± 6 39 ± 10
FVC1 (% predicted) 60 ± 19 72 ± 17 87 ± 20
FEV1/FVC (%) 59 ± 9 67 ± 5 87 ± 9
PaO2 (mm Hg) 69 ± 10 70 ± 11 79 ± 12
PaO2 (mm Hg) 40 ± 5 45 ± 5 39 ± 4
AHI (events/h) 6 ± 5 40 ± 20 42 ± 23
% Time SpO2 < 90% 16 ± 28 48 ± 28 30 ± 28
*

Values are mean ± SD.

OSA = obstructive sleep apnea

Overlap = both COPD and OSA