In patients with non-dialysis-dependent end stage kidney disease (ESKD) the common transition of care to renal replacement therapy is dialysis. Each year over 70 000 Chinese transition from non-dialysis-dependent ESKD to dialysis. Whereas dialysis therapy is intended to be life-sustaining, ESKD patients have a 10-fold or higher risk of death compared with the general population. Mortality rates are even higher upon transition and in the first year, especially in the first 3 to 6 months following the transition to dialysis, yet it remains unknown which is the contributing cause of this high death rate. Hence, there is an urgent need to examine the emerging field of Transition of Care in ESKD. We suggest the term "peridialysis period" for this transition period for ESKD patients, so that the transition of care from non-dialysis-dependent ESKD to dialysis ESKD can be more pragmatically defined and studied. In the current study, we will investigate the mortality and its risk factors of ESKD patients during peridialysis period, and improve the survival rate and quality of life of peridialysis ESKD patients by intervening the risk factors.

Inclusion Criteria:

• Patients who have been diagnosed with end stage kidney disease (eGFR<15ml/min/1.73m2) or newly started dialysis with 3 months at all hospitals in Yangzhou, China since January 1, 2016

Exclusion Criteria:

• Patients who have had a history of dialysis and have been transferred to Yangzhou during this period;
• patients who are transferred to a dialysis area outside Yangzhou City
• Patients who give up dialysis treatment
• patient whose renal function recover and stop dialysis treatment;
• Patient who receive kidney transplantation