Kidney transplant registries: How to optimize their utility?

Abstract The scientific Registries (RE) in renal transplantation (Tx) are very useful since they allow us to identify risk factors in this population and facilitate contrasting the information with other national and international registries, contributing to establishing strategies which improve outcomes in terms of survival. They constitute an organized and planned system that uses observational methods and standardized systematic processes, including adjusted risk models, to essentially evaluate survival outcomes. The scientific RE are complemented with clinical trials providing scientific evidence, but inexcusably need adequate statistical analysis to generate reliable clinical data that contribute to optimizing the prognosis of the transplant population. In addition, scientific RE provide valuable information on the performance of Tx programs and help generate prognostic indexes, which could contribute to improving survival. Under these prerequisites, this review will assess the following aspects related to the scientific RE in the Tx: (1) the concept and importance of implementing RE in Tx; (2) the measures that are needed for the correct execution of the scientific RE; (3) the benefits, quality and limitations of RE; (4) the statistical tools for the adequate analysis of survival; and (5) utility of RE in the evaluation of performance, quality and surveillance of transplant programs and the generation of comorbidity indices.