Influencing Factors in the Survival of Dialysis Patients in El Salvador

Abstract

Introduction. The chronic kidney disease is responsible for  approximately 2,4 million deaths worldwide, in El Salvador during 2019 death rate was 72,9 for 100 000 habitants, 5 year survival in patients after starting dialysis was between 39 and 60 % depending on the country. Objective. Analyze the risk factors that influence the 5 years survival in patients after starting renal replacement therapy. Methodology. It is a survival analysis using Kaplan-Meier method and Cox regression with Royston-Parmar Model with information from 7164 patients included in Dialysis and Renal Replacement Registry in El Salvador from 2016 to February 2023, comparing by sex, age of treatment initiation, initial treatment and etiology. Results. One- and five-years survival was 79,5% (CI95%: 78,6-80,5%) and 50,6% (CI95%: 49,1-52,1%) respectively, Cox regression for age of treatment initiation resulted in Hazard Ratio: 1,02 (CI95%: 1,01-1,02), while for agricultures are at 1,1 (CI95%: 1,01-1,2), for hypertensive etiology was Hazard Ratio 0,7 (CI95%: 0,63-0,78). Conclusion. Data suggest that age of treatment initiation, and jobs related to agriculture were associated with less 5-year survival in dialysis patients while hypertensive etiology had better d years’ survival.