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Long-term survival rates of patients undergoing vitrectomy for diabetic retinopathy in an Australian population: a population-based audit

Liu, E, Estevez, J, Kaidonis, G, Hassall, M, Phillips, R, Raymond, G, Saha, N, Wong, GHC, Gilhotra, J, Burdon, K ORCID: 0000-0001-8217-1249, Landers, J, Henderson, T, Newland, H, Lake, S and Craig, JE 2019 , 'Long-term survival rates of patients undergoing vitrectomy for diabetic retinopathy in an Australian population: a population-based audit' , Clinical and Experimental Ophthalmology, vol. 47, no. 5 , pp. 598-604 , doi:

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Importance: Five-year survival rates in patients undergoing vitrectomy for diabetic retinopathy (DR) vary from 68% to 95%. No study has been conducted in an Australian population.Background: We aimed to determine the survival rates of patients undergoing diabetic vitrectomy in an Australian population.Design: Retrospective audit, tertiary centre hospitals and private practices.Participants: All individuals in South Australia and the Northern Territory who underwent their first vitrectomy for diabetic complications between January 1, 2007 and December 31, 2011.Methods: An audit of all eligible participants has been completed previously. Survival status as of July 6, 2018 and cause of death were obtained using SA/NT DataLink. Kaplan-Meier survival curves and multivariate cox-regressions were used to analyse survival rates and identify risk factors for mortality.Main Outcome Measures: Five-, seven- and nine-year survival rates.Results: The 5-, 7- and 9-year survival rates were 84.4%, 77.9% and 74.7%, respectively. The most common cause of death was cardiovascular disease. Associated with increased mortality independent of age were Indigenous ethnicity (HR = 2.04, 95% confidence interval [CI]: 1.17-3.57, P = 0.012), chronic renal failure (HR = 1.76, 95% CI: 1.07-2.89, P = 0.026) and renal failure requiring dialysis (HR = 2.32, 95% CI: 1.25-4.32, P = 0.008).Conclusions and Relevance: Long-term survival rates after diabetic vitrectomy in Australia are similar to rates reported in other populations. Indigenous ethnicity and chronic renal failure were the most significant factors associated with long-term mortality. This information can guide allocation of future resources to improve the prognosis of these high risk groups.

Item Type: Article
Authors/Creators:Liu, E and Estevez, J and Kaidonis, G and Hassall, M and Phillips, R and Raymond, G and Saha, N and Wong, GHC and Gilhotra, J and Burdon, K and Landers, J and Henderson, T and Newland, H and Lake, S and Craig, JE
Keywords: Australia, diabetic retinopathy, long-term mortality, vitrectomy
Journal or Publication Title: Clinical and Experimental Ophthalmology
Publisher: Blackwell Publishing Asia
ISSN: 1442-6404
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Copyright 2019 Royal Australian and New Zealand College of Ophthalmologists

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