Cystatin C Levels in Middle-Aged Patients with Obstructive Sleep Apnea Syndrome

Table 5

Multiple regression analysis results in a model examining the predictive role of age, BMI, and RDI on serum cystatin C levels in OSAS patients.

	Cystatin C
	β		B
Age	0.127	0.282	−2.470
BMI	−0.090	0.461	3.640
RDI	0.256	0.039	2.660
R^2	0.071

BMI: body mass index, OSAS: obstructive sleep apnea syndrome, and RDI: respiratory disturbance index.