CYGB and hypertensive disorder: Furthermore, age (rs = 0.38, p = 0.031), disease duration (rs = 0.32, p = 0.040), hypertension (rs = 0.43, p = 0.004), RBC (rs = −0.47, p = 0.002), and HGB (rs = −0.40, p = 0.009) were also associated with CI.