Factors Influencing Risk of Progression of Chronic Kidney Disease

Factors Influencing Risk of Progression of Chronic Kidney Disease in Patients With Severe Renal Failure

The aim of this study is to identify typical patterns of renal function evolution in patients with stage 4 chronic kidney disease, regularly followed in nephrology consultation and included in a French cohort.

Inclusion Criteria:

• Patients meeting the inclusion criteria of the ND-CRIS cohort (long-term follow-up in one of the centers participating in the research, with a GFR <60mL/min /1.73m2)
• Patients included in the ND-CRIS cohort on the date when the estimate of their GFR is strictly less than 30mL/min/1.73m2 and greater than or equal to 15mL/min/1.73m2 (MDRD equation).

Patients should have at least two measurements of GFR <30mL/min/1.73m2 to be included, at least one of them greater than or equal to 15mL/min/1.73m2. The date of the first GFR <30mL/min/ 1.73m2 will be considered as the date of origin.

Exclusion Criteria:

• Patients with GFR ≥30mL / min / 1.73m2 or <15mL / min / 1.73m2
• Patients who do not meet the inclusion criteria of ND-CRIS cohort (dialysis patients, transplant patients, unfollowed patients)