Nephrol Dial Transplant (1999) 14: 2849-2854
© 1999 European Renal Association-European Dialysis and Transplant Association
Dialysis and Transplantation News
Comparison of survival for haemodialysis patients vs renal transplant recipients treated in Uruguay
Instituto de Nefrología y Urología, Servicio de Asistencia Renal Integral, Montevideo, Uruguay
Correspondence and offprint requests to: Dr Nelson Mazzuchi, Instituto de Nefrología y Urologia del Uruguay, Ramón y Cajal 2550, Montevideo 11600, CC. 16217, Uruguay.
Abstract
Background. Our aim was to compare survival among renal transplant recipients and haemodialysis patients treated in Uruguay.
Methods. All the patients transplanted in Uruguay (n=460) and all the patients who started haemodialysis (HD) in three centres in Uruguay (n=695) from 01 January 1981 to 31 December 1998 were included. Overall survival, adjusted survival and survival of the patients in the low-risk group were compared for HD patients and renal transplant recipients. Diabetic and non-diabetic patients were considered independently. The low-risk group was defined by the absence of any significant risk factor related to mortality on the Cox proportional hazard regression model (age more than 55 years at start of HD, previous history of diabetes, heart disease, cancer, and smoking habit). The significant variables were also used to adjust the survival curve.
Results. Overall survival was significantly greater in renal transplant recipients (P<0.0001). One-, five- and ten-year survival rates were 95.2, 88.0 and 78.8% for renal transplant recipients and 90.6, 62.7 and 39.8% for HD patients. In non-diabetic patients, adjusted survival rates (for age, heart disease, cancer, and smoking habit) were similar in renal transplant recipients and HD patients (P=0.8713). In the low-risk group as well, significant differences in survival between renal transplant recipients (n=289) and HD patients (n=134) were not observed (P=0.2312). Ten-year survival rates were 82.6 and 87.9% respectively. In diabetic patients 5-year survival rates adjusted for heart disease, smoking habit, and chronic pulmonary disease were 89.2% for renal transplant recipients and 40.9% for HD patients (P=0.0168) The relative risk of haemodialysis patients related to renal graft recipients was 2.85 (1.21–6.75).
Conclusions. We conclude that when the outcome is adjusted to co-morbid factors there is no difference between renal transplant recipients and haemodialysis patients survival in non-diabetic patients, while renal transplantation gives better survival rates than haemodialysis in diabetic patients.
Keywords: Cox proportional hazard model; diabetic; haemodialysis survival; low-risk patients; non-diabetic; renal transplant survival
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