Table 7. Multiple regression analyses for the AHI, MI, and ODI with regard to the OSAHS group.

Model	Variable	B	β	R2	R2adj	ANOVA
						F	P value
1	AHI			0.427	0.402	17.149	0.000
	VLF [%]	1.318	0.654**
	Constant	-38.357
2	MI			0.591	0.554	15.914	0
	LF/HF	11.297	0.664**
	SDNN	0.266	0.354*
	Constant	-13.389
3	ODI			0.412	0.386	16.107	0.001
	VLF [%]	1.715	0.642**
	Constant	-55.588

Dependent variables: AHI for model 1, MI for model 2, and ODI for model 3; Independent variables: VLF [%] for model 1, LF/HF and SDNN for model 2, and VLF [%] for model 3; B: unstandardized coefficient; β: standardized coefficient; R²_adj: adjusted R²;

*P<0.05;

**P<0.01.