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Presenter: Kirsten, Howard, Sydney, Australia
Authors: Kirsten Howard, Stephen Jan, John M. Rose, Michelle Irving, Germaine Wong, Allison Tong, Jonathan C. Craig, Steven Chadban, Richard D. Allen, Alan Cass
Making difficult choices: community preferences for allocation of donor organs
Kirsten Howard1, Stephen Jan2, John M. Rose3, Michelle Irving1,4, Germaine Wong1,4, Allison Tong1,4, Jonathan C. Craig1,4, Steven Chadban5,6, Richard D. Allen6, Alan Cass7
1School of Public Health, University of Sydney, Sydney, Australia, 2The George Institute for International Health, Sydney, Australia, 3Institute for Transport and Logistics Studies, University of Sydney, Sydney, Australia, 4Centre for Kidney Research, The Children's Hospital Westmead, Westmead, Australia, 5Central Clinical School, Bosch Institute, University of Sydney, Sydney, Australia, 6Department of Renal Medicine, Royal Prince Alfred Hospital, Sydney, Australia, 7Menzies School of Health Research, Casuarina, Australia
Background: The demand for organs for transplant far exceeds supply. Organs for transplant can be viewed as a community held resource, but little is known about community preferences for how they should be allocated. We used discrete choice methods to assess community preferences for organ allocation.
Methods: Community respondents answered 30 scenarios each presenting two hypothetical patients, indicating which patient should receive a transplant if only one organ was available. Patients were described by factors such as age, sex, number of previous transplants, time on waiting list, pre- and post- transplant life-expectancy, pre- and post- transplant quality of life (QOL).
Results: There were 2051 respondents with a mean age of 44 (range18-83); 51% were female. Compared to a patient aged 40, younger patients were given higher preference, while older patients were less preferred. Family members being registered as donors, the patient having caring responsibilities, and spending a longer time on waiting lists all increased priority. Patients with lower pre-transplant life-expectancy and lower pre-transplant QOL were given a higher preference (need); as were patients who had a higher post-transplant life-expectancy and a higher post-transplant QOL (capacity to benefit or utility). Lower pre-transplant life-expectancy was however, valued more highly than increased post-transplant life-expectancy. When LE and QOL were combined into quality adjusted life years (QALYs) there was a higher preference for giving organs to patients with lower pre-transplant QALYs, compared to higher post-transplant QALYs with one fewer pre-transplant QALY requiring an extra 2.12 post-transplant QALYs to compensate for the loss.
Conclusions: Many factors considered in current organ allocation algorithms are consistent with community preferences. Lower pre-transplant life expectancy and QALYs (which can be thought of as ‘need’) were more important than higher post-transplant life expectancy or QALYs. This suggests that whilst there is a current move toward allocation algorithms favouring high life expectancy after transplant (utility), emphasis also ought to be given to ‘need’ as measured by pre-transplant life expectancy and quality adjusted life expectancy.
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