Anatomical Brain Changes and Cognitive Abilities in Patients with Obstructive Sleep Apnea Syndrome and Nonalcoholic Fatty Liver Disease

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 (cm^3)	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
Putamen volume (cm^3)	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
Globus pallidus volume (cm^3)	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
Thalamus volume (cm^3)	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
Hippocampal formation volume (cm^3)	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
Lateral ventricle volume (cm^3)	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
Prefrontal cortex volume (cm^3)	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
Gray matter volume (cm^3)	B = −1.24; Const = 396.63; Beta = −0.42		B = −1.23; Const = 395.21; Beta = −0.39

L: left hemisphere; R: right hemisphere.