Figure 2

Correlation between the ONH-MBR and the biological characteristics of the subjects. The MBR was significantly correlated with age (r = −0.178, P = 0.010), heart rate (r = 0.143, P = 0.008), serum creatinine (r = −0.158, P = 0.003), erythrocyte (r = −0.209, P < 0.001), hemoglobin (r = −0.313, P < 0.001), and hematocrit (r = −0.312, P < 0.001). Black square, males; Red circle, females.