Matrix Metalloproteinase-9 Is a Predictive Factor for Systematic Hypertension and Heart Dysfunction in Patients with Obstructive Sleep Apnea Syndrome

Table 2

Serum MMP-9 level is correlated with the severity of OSAS and hypertension.

	Cases ()	MMP-9 level (ng/mL)	value
OSAS severity
Mild	16		Reference
Moderate	12		0.02
Severe	19		<0.001
Hypertension
Absent	35		Reference
Present	12		<0.001

Data are mean ± SD; versus reference group (Student’s -test).