There were no statistically significant differences in age, gender, education, employment status, marital status, average monthly income, payment method for expenses, alcohol intake, smoking, hypertension, diabetes, cardiovascular complications, cerebrovascular complications, daily dialysis frequency, dialysis duration, primary disease, sleep disorders, hemoglobin, blood uric acid, albumin, protein catabolic rate, KT/V between the validation set and the training set (p > 0.05). The gene discussed is ALB; the disease is hypertensive disorder.