BioMed Research International / 2018 / Article / Fig 3

Research Article

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

Figure 3

Hypertension-free survival of enrolled OSAS cohort. (a) Till the end of follow-up, 12 cases (12/35, 34.3%) had systematic hypertension. The risk factors for hypertension occurrence include OSAS severity (b), lowest SpO2 during sleep (c), and serum MMP-9 level (d). difference regarding the hypertension-free survival between the two compared groups by Student’s t-test.

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