Table 1

Patient characteristics by treatment group. Data are displayed as mean±standard deviation, median (first quartile, third quartile) or number (%)

CPAPStandard careCPAP where usage >4 hour/night
Number949725
Baseline age (years)58.2±7.157.7±7.657.2±6.3
Male81 (86%)84 (87%)23 (92%)
Female13 (14%)13 (13%)2 (8%)
Baseline BMI (kg/m2)32.6±5.732.4±5.332.5±4.0
ODI at presentation10.7 (4.7, 17.9)10.1 (5.9, 18.2)11.5 (3.6, 30.4)
Baseline hypertension45 (48%)47 (49%)10 (40%)
Baseline diabetes mellitus15 (16%)24 (25%)3 (12%)
Baseline atrial fibrillation4 (4%)4 (4%)1 (4%)
Baseline ischaemic heart disease11 (12%)18 (19%)2 (8%)
Baseline cerebrovascular disease6 (6%)2 (2%)2 (8%)
Current smoker10 (11%)17 (18%)24 (17%)
Length of follow-up (years)5.0 (2.2, 5.0)3.7 (1.5, 5.0)5.0 (5.0, 5.0)
Number of crossovers43 (46%)16 (17%)0 (0%)
Numbers using CPAP at final follow-up38 (40%)10 (10%)25 (100%)
Adherence in those using CPAP at final follow-up (hours:min/night)5:51 (3:22, 6:58)3:32 (1:00, 6:56)6:44 (5:51, 7:10)
  • BMI, body mass index; CPAP, continuous positive airway pressure; ODI, Oxygen desaturation index >4%.