In the univariate regression model, the factors of CVC included atrial fibrillation, coronary heart disease (CHD), LVH, blood calcium, diabetes, age, dialysis age, diastolic blood pressure, albumin, activity, and light exposure (P values = .000, .000, .000, .009, .004, .000, .003, .004, .009, and .000, respectively). Here, ALB is linked to diabetes mellitus.