Table 3.

Multivariable regression analysis for cf-PWV

Variables	Coefficient estimate (95%CI)	p-value
Age	0.07 (0.01; 0.13)	0.015
Time	−0.24 (−0.89; 0.41)	0.470
Pulse pressure (mm Hg)	0.16 (0.10; 0.21)	<0.001
ESS >10	1.23 (0.18; 2.27)	0.022
Time×ESS*	−1.07 (−2.05; −0.09)	0.033

ESS Epworth Sleepiness Scale; *interaction term of ESS group and time (defined by the two assessment instants: before and after CPAP); p-values were obtained by linear mixed effects regression models