Fig. 2.

Effects of CPAP therapy on mean (SD) main outcomes in patients with the over the course of 2 years. Results are not statistically different for patients randomized to autoCPAP and fCPAP, and main effects were achieved within the first 3 months of treatment. *p < 0.05 for changes of autoCPAP and fCPAP at 3 months versus baseline and #p < 0.05 for changes of fCPAP at 24 versus 3 months. CPAP, continuous positive airway pressure; fCPAP, fixed CPAP; auotCPAP, autoadjusted CPAP; OSAS, obstructive sleep apnea syndrome.