While survival outcome was the dependent variable, ethnicity, sex, age, weight, urine output, BMI, primary disease, hemoglobin, albumin, NT-proBNP, PTH, residual renal function, serum creatinine, blood urea nitrogen, coronary artery disease, heart failure, PVD, diabetes mellitus, hypertension, malignant neoplastic diseases and chronic obstructive pulmonary disease were independent variables. The gene discussed is PTH; the disease is heart failure.