a trend towards significancep=0.055
There was a trend towards significance for the main effect of time (Control versus CPAP; p=0.055 and interaction between group (PAH versus healthy individuals) and time (p=0.055) for oxygen saturation suggestive of an increase in oxygen saturation with CPAP of ∼1% (96.5±2.6 versus 97.4±1.9%) in PAH patients; however, not clinically significant.