French Renal Epidemiology and Information Network (REIN) Registry in Lorraine

The REIN registry is intended to include all end stage renal disease patients on renal replacement therapy (RRT) - either dialysis or transplantation - living in Lorraine area.

New (incident) patients are reported from the first day of RRT. Patients with a diagnosis of acute renal failure are excluded, i.e. those who recover all or some renal function within 45 days or are considered as such by experts when they die before 45 days. Patients with pre-emptive grafts and those living with a functioning graft are identified from the transplant database.

A set of basic items, including fixed and annually updateable items, was defined for all dialysis patients. Five types of events are reported to the registry on occurrence from the first day of any treatment: (1) renal transplantation, (2) changes in dialysis setting, (3) changes in type of dialysis, (4) transient recovery of renal function and (5) death.

The participation rate of centres in Lorraine is 100%. A clinical research assistant visits every dialysis centre to verify the completeness of patient and event registration, by comparing reports to the registry with centre administration files.

The REIN guide defines all items to be recorded, includes coding instructions, and serves as a standard for all participating regions.