TABLE 3.

The results of multiple linear regression analysis.

	R	R 2		β	t	p	VIF
Step 1	0.47	0.22	constant	–	8.98	<0.01	–
			ODI	0.47	5.10	<0.01	1.00
Step 2	0.54	0.29	constant	–	4.97	<0.01	–
			ODI	0.44	4.93	<0.01	1.01
			MoCA	−0.27	−3.03	<0.01	1.01

Step 1 excluded MoCA, AHI, and micro-arousal index; Step 2 excluded AHI, and micro-arousal index. MoCA, Montreal Cognitive Assessment; ODI, oxygen depletion index.