Table 3.

Multiple linear regression analysis of T/S ratio and sleep factors.

Independent Variable	β	Std. Error	t	P
Constant	23.040	3.807	6.051	.000
Age	−0.054	0.059	−0.915	.363
Education	0.170	0.267	0.636	.527
BMI	0.019	0.087	0.220	.827
T/S ratio	−4.079	0.903	−4.517	.000
sNfL	−0.021	0.025	−0.840	.404

BMI = body mass index, sNfL = serum neurofilament light chain, Std. Error = standard error, T/S ratio, relative telomere repeat copy/single-copy gene ratio, β = unstandardized coefficient.s