Table 2.

Effect of Treatment on 24-Hour Blood Pressure.^*

Variable	CPAP (N = 90)	NSO (N = 94)	HLSE (N = 97)	CPAP vs. HLSE	NSO vs. HLSE	CPAP vs. NSO
24-Hr mean arterial blood pressure
Baseline	89.5±8.6	88.6±10.0	87.7±9.3
12 Wk	87.8±8.1	90.2±11.1	89.0±11.2	−2.4 (P = 0.04)	0.4 (P = 0.71)	−2.8 (P = 0.02)
24-Hr mean systolic blood pressure
Baseline	124.7±13.5	125.3±16.9	123.6±14.3
12 Wk	123.4±12.8	126.9±16.5	124.7±16.4	−1.9 (P = 0.25)	1.2 (P = 0.45)	−3.1 (P = 0.06)
24-Hr mean diastolic blood pressure
Baseline	72.0±7.7	70.8±8.3	69.6±8.6
12 Wk	69.8±7.5	71.7±9.8	70.9±10.1	−2.8 (P = 0.005)	−0.1 (P = 0.95)	−2.8 (P = 0.006)

^*Plus–minus values are means ±SD. The between-group differences are the mean differences at 12 weeks, adjusted for study site, presence or absence of coronary artery disease, and blood pressure as measured at baseline. CPAP denotes continuous positive airway pressure, NSO nocturnal supplemental oxygen, and HLSE healthy lifestyle and sleep education.