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Background and purpose: According to the Iranian Health Ministry, the incidence of renal failure is 2.5 per thousand. One of the main treatments of this disease is hemodialysis. The main aim of this study was to estimate the survival rate of hemodialysis patients and also to choose a suitable model for survival in this group of patients. Materials and methods: This retrospective cohort study was performed using the medical records of 500 patients during 2007 to 2013. Kaplan-Meier survival estimate was used and evaluation of the model was performed. Results: The median survival time was 108 months for the patients. This rate for one, two, three, five and ten years were 83%, 77%, 71%, 58%, and 42%, respectively. The median survival time was 243.69±69 for patients who did not smoke. The survival time was considerably different in patients with diabetes. Conclusion: Evaluation of the model showed that the gamma distribution fits better than other distributions for the survival of hemodialysis patients.

Keywords: Hemodialysis patients, survival, Kaplan-Meier

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