Table 4.

Correlation matrix between polysomnographic parameters and volumes obtained.

Parameter	AHI per hour		ODI per hour		Significance AHI		Significance ODI
	L	R	L	R	L	R	L	R
Caudate nucleus volume (cm3)	B = −0.015 Const = 4.35 Beta = −0.37	B = −0.015 Const = 4.40 Beta = −0.39	B = −0.015 Const = 4.34 Beta = −0.38	B = −0.015 Const = 4.38 Beta = −0.38	p < 0.001	p < 0.001	p < 0.001	p < 0.001
Putamen volume (cm3)	B = −0.01 Const = 6.24 Beta = −0.25	B = −0.01 Const = 6.25 Beta = −0.22	B = −0.07 Const = 6.23 Beta = −0.22	B = −0.07 Const = 6.24 Beta = −0.198	p < 0.005	p < 0.01	p < 0.01	p < 0.02
Globus pallidus volume (cm3)	B = −0.01 Const = 2.47 Beta = −0.38	B = −0.01 Const = 2.45 Beta = −0.36	B = −0.01 Const = 2.49 Beta = −0.35	B = −0.09 Const = 2.46 Beta = −0.37	p < 0.0001	p < 0.0001	p < 0.0001	p < 0.0001
Thalamus volume (cm3)	B = −0.02 Const = 7.19 Beta = −0.45	B = −0.02 Const = 7.20 Beta = −0.42	B = −0.024 Const = 7.16 Beta = −0.43	B = −0.024 Const = 7.18 Beta = −0.40	p < 0.001	p < 0.0001	p < 0.0001	p < 0.0001
Hippocampal formation volume (cm3)	B = −0.02 Const = 3.72 Beta = −0.49	B = −0.02 Const = 3.69 Beta = −0.48	B = −0.02 Const = 3.69 Beta = −0.47	B = −0.02 Const = 3.69 Beta = −0.48	p < 0.0001	p < 0.0001	p < 0.0001	p < 0.0001
Lateral ventricle volume (cm3)	B = 0.03 Const = 6.25 Beta = 0.54	B = 0.03 Const = 6.21 Beta = 0.54	B = 0.03 Const = 6.25 Beta = 0.54	B = 0.03 Const = 6.22 Beta = 0.54	p < 0.0001	p < 0.0001	p < 0.001	p < 0.001
Prefrontal cortex volume (cm3)	B = −0.36 Const = 157.65 Beta = −0.33	B = −0.29 Const = 156.13 Beta = −0.28	B = −0.36 Const = 157.36 Beta = −0.32	B = −0.30 Const = 155.89 Beta = −0.27	p < 0.0001	p < 0.001	p < 0.001	p < 0.001
Gray matter volume (cm3)	B = −1.24 Const = 396.63 Beta = −0.42		B = −1.23 Const = 395.21 Beta = −0.39		p < 0.001		p < 0.001

L: left hemisphere; R: right hemisphere.