To investigate of malnutrition by using indicators: SGA_3, Body Mass Index, serum prealbumin, serum albumin, normalized protein catabolic rate (nPCR) and serum leptin concentration in patients with chronic kidney disease are on Hemodialysis and continuous peritoneal dialysis at Can Tho General Hospital. To find the factor related malnutrition, serum leptin levels and clinical, subclinical, and all-cause mortality in 12 months in these two patient groups. | Summary thesis of Medical Doctor Study on malnutrition status and serum leptin levels in end-stage renal disease patient is on maintenance hemodialysis and outpatients continuous peritoneal dialysis