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Does implementing opt-out solve the organ shortage problem? Evidence from a synthetic control approach
1ifo Institute, Dresden, Germany. schulze-spuentrup@ifo.de.
Abstract:
In light of the persistent shortage of organ donations needed to save precious human lives, several countries have modified their organ donation laws by introducing an opt-out system, making every deceased a potential organ donor unless the person has objected. This study examines the impact of adopting opt-out on organ donation rates. Using a panel dataset covering a 21-year period, I apply a synthetic control approach to focus on countries that changed their prevailing organ donation legislation from opt-in to opt-out. I compare them to a synthetic counterfactual from countries that have kept their legislation the same since 1999. Synthetic control estimates show that Argentina and Wales achieved substantially higher organ donation rates with the shift from an opt-in to an opt-out system than without the reform taking place. My findings suggest that as one strategy among others, implementing opt-out cannot solve the organ shortage problem entirely but effectively contributes to reducing it considerably.
Insights
Implementing an opt-out organ donation system significantly increases donation rates, as seen in Argentina and Wales. While not a complete solution, this policy effectively helps reduce the organ shortage crisis.
Area of Science:
- Public Health Policy
- Transplantation Medicine
- Health Economics
Background:
- Persistent global shortage of organ donations poses a critical public health challenge.
- Many countries are exploring legislative changes to increase organ availability.
- The opt-out system, where consent is presumed unless explicitly refused, is a key policy under consideration.
Purpose of the Study:
- To evaluate the causal effect of adopting an opt-out organ donation system on organ donation rates.
- To provide empirical evidence on the effectiveness of opt-out legislation compared to opt-in systems.
Main Methods:
- Utilized a 21-year panel dataset spanning from 1999 onwards.
- Employed a synthetic control approach to construct counterfactuals for countries transitioning to opt-out.
- Compared organ donation rates in countries that reformed their laws (e.g., Argentina, Wales) against their synthetic counterparts.
Main Results:
- Synthetic control estimates indicate a substantial increase in organ donation rates following the adoption of opt-out systems in Argentina and Wales.
- The observed increases in donation rates were significantly higher than predicted by the synthetic counterfactuals (i.e., without the reform).
- The shift from opt-in to opt-out legislation demonstrated a positive and measurable impact on organ procurement.
Conclusions:
- The adoption of opt-out organ donation systems is an effective strategy for considerably reducing the organ shortage.
- While not a panacea, opt-out policies represent a valuable tool among other interventions to improve organ donation rates.
- The findings support the consideration of opt-out systems as a viable policy to enhance organ availability for transplantation.

