Table 4.

Effect of CPAP and Bilevel PAP on Sleep, Functional, and Cardiovascular Parameters

Treatment Features	CPAP	Bilevel PAP	Bilevel PAP-CPAP	95% CI	p Value
Residual AHI, events/h	3.95	1.43	− 2.5	− 5.2, 0.2	0.06
Average pressure (inspiratory pressure for bilevel group),   cm H2O	8.36	10.9	2.6	0.1, 5.0	0.04
Adherence (average hourly use in 90 d)	3.6	4.5	0.9	− 1.6, 3.4	0.46
Improvement in ESS score	− 4.7	− 2.6	2.1	− 2.7, 6.9	0.38
Improvement in MLWHF questionnaire	− 2.9	− 11.1	− 8.2	− 32.6, 16.3	0.49
Change in 6-min walk distance, feet	5.8	35.5	29.7	− 59,118	0.49
Change in systolic BP, mm Hg	− 1.4	− 6.3	4.9	− 10.9, 20.6	0.53
Change in diastolic BP, mm Hg	− 2.2	− 7.5	5.3	− 5.4, 15.9	0.31
Change in heart rate, beats/min	− 5.6	− 1.3	4.3	− 6.6, 6.9	0.42