Table 3 Multiple linear regression analysis investigating predictors of central apnoea index

	Coefficient	SE	t	p Value
Age	0.0736	0.0353	2.087	0.044
BMI	−0.0562	0.0974	−0.577	0.567
Chiari type	3.962	1.534	2.582	0.014
Sensory loss	−0.187	1.036	−0.180	0.858
Pyramidal signs	−0.673	1.070	−0.629	0.533
Cerebellar signs	2.242	1.195	1.877	0.068
Vocal cord paralysis	7.805	1.816	4.298	<0.001

BMI, body mass index.