Table 1.

Baseline Demographic Information.

	N	%
Total Participants	848
% Men	552	65.1
Ethnicity
Non Hispanic White	647	76.3
Black	75	8.8
Hispanic	60	7.1
Asian	50	5.9
Native American	13	1.5
Other	3	0.4
Age	52±12 years
Body Mass Index (kg/m2)	32.2±7.1
Apnea Hypopnea Index (#/hour)	40.7±24.9
% Time Oxygen Saturations < 85%	2.2±6.2
Group Assignment
Sham	406	47.9
CPAP	442	52.1
Compliance with CPAP/Sham CPAP at 6 months, Hours)
Sham	354	3.5±2.3
CPAP	403	4.5±2.3