Comparison of Auto- and Fixed-Continuous Positive Airway Pressure on Air Leak in Patients with Obstructive Sleep Apnea: Data from a Randomized Controlled Trial

Table 1

Leak data reported for each device brand and CPAP mode.

Type of device	Definition of leak data	Fixed-CPAP group	Auto-CPAP group
WEINMANN	Time spent with large leakage expressed in %	0.4 (0.0; 2.4)	1.5 (0.1; 4.5)
ResMed devices	Median nonintentional leakage expressed in L/min	1.2 (0.0; 2.4)	1.2 (0.0; 3.6)
	95th percentile of nonintentional leakage expressed in L/min	12.0 (6.0; 21.6)	10.8 (6.0; 16.8)
Philips devices	Mean total leakage expressed in L/min	39.6 (35.2; 41.5)	36.0 (33.5; 40.2)
	90th percentile of total leakage expressed in L/min	47.9 (42.0; 51.1)	45.1 (41.0; 49.5)

Data are expressed as medians (25th; 75th) and means (SD). Device names: SOMNOsmart 2 for WEINMANN, S8 Spirit 2 for ResMed, and Remstar Auto for Philips. This table shows how the 3 manufacturers report leakage for each mode of PAP used in the study: fixed or auto. Data reporting differ between each of the CPAP adherence tracking system devices.