Table 2.

Outcomes in patients with Overlap Syndrome in one year pre- and one year post-initiation of PAP. (N=319)

Outcomes	One year pre-initiation of PAP	One year post-initiation of PAP	P values
ER visit for all cause, (n) %	(172)53.9%	(175)54.9%	0.77
ER visit for COPD, (n) %	(53)16.6%	(43)13.5%	0.18
Hospitalization for all cause, (n)%	(153)48%	(146)45.8%	0.52
Mean ± SD	0.97 ± 1.37	0.91 ± 1.34
Hospitalization for COPD, (n) %	(81)25.4%	(62)19.4%	0.03
Mean ± SD	0.40 ± 0.83	0.31 ± 0.75
Outpatient visit, (n)%	(166)52%	(167)52.4%	0.32

Definition of abbreviations: PAP = Positive Airway Pressure; ER = Emergency Room; COPD = Chronic Obstructive Pulmonary Disease.