Table 3.

Correlation analysis of liver enzymes with polysomnographic parameters, BMI and age

Parameters	ALT		AST		GGT
	r	P	r	P	r	P
Age	−0.266	<0.001	−0.156	<0.001	−0.185	<0.001
BMI	0.277	<0.001	0.234	<0.001	0.210	<0.001
ESS	0.132	0.003	0.128	0.004	0.079	0.077
ODI	0.157	<0.001	0.117	0.007	0.137	0.002
TS90%	0.195	<0.001	0.153	<0.001	0.147	0.001
L-SaO2	−0.179	<0.001	−0.127	0.003	−0.101	0.02
AHI	0.206	<0.001	0.138	0.001	0.125	0.004
TC	0.119	0.006	0.144	0.001	0.198	<0.001
TG	0.203	<0.001	0.198	<0.001	0.354	<0.001

ALT: Alanine aminotransferase; AST: Aspartate aminotransferase; GGT: Gamma-glutamyl transferase; BMI: Body mass index; ESS: Epworth Sleepiness Scale; L-SaO₂: The lowest SaO₂; TS90%: Percentage of total time with oxygen saturation level <90%; ODI: Oxygen desaturation index; AHI: Apnea-hypopnea index; TC: Total cholesterol; TG: Triglyceride.