Organ donation in Sweden

The role of motivational and legal contexts in understanding support for tissue donation across 27 European countries

BACKGROUND

There is a mismatch between attitudinal support for tissue donation and its translation into behavioural action (i.e. become registered donor). The legal and motivational context around tissue donation may contribute to better understanding of this mismatch.

METHODS

Data were extracted from the Eurobarometer 82.2 survey (2014). Data included socio-demographic characteristics, motivations underlying attitudes to tissue donation and the legal context within which donation was considered (opt-in and opt-out consent). The sample was partitioned based on contextual information and seemingly unrelated bivariate probit regressions were used to explore the relationship between passive and active support for tissue donation.

RESULTS

Approximately 56% of 25 879 respondents stated a willingness to donate tissue after death (passive support) and 9.1% reported that they were a registered donor (active support). We found evidence of unobserved heterogeneity between active and passive support across contexts. Our findings suggest that contexts in which altruistic motives can be supported by self-interest may increase the probability of converting passive to active support. Factors associated with increased support for tissue donation included: higher levels of education; good knowledge of the healthcare system; confidence in the safety of tissue donation; readiness to be a tissue recipient and knowing a recipient of donated tissue.

CONCLUSIONS

Our findings demonstrate the value of examining active and passive support for tissue donation together within specific contexts. This more nuanced approach affords clearer insights that may help to guide policy makers confronted with apparently conflicting evidence around strategies intended to promote organ and tissue donation.

Comparison of organ donation and transplantation rates between opt-out and opt-in systems

Studies comparing opt-out and opt-in approaches to organ donation have generally suggested higher donation and transplantation rates in countries with an opt-out strategy. We compared organ donation and transplantation rates between countries with opt-out versus opt-in systems to investigate possible differences in the contemporary era. Data were analysed for 35 countries registered with the Organisation for Economic Co-operation and Development (17 countries classified as opt-out, 18 classified as opt-in) and obtained organ donation and transplantation rates for 2016 from the Global Observatory for Donation and Transplantation. Compared to opt-in countries, opt-out countries had fewer living donors per million population (4.8 versus 15.7, respectively) with no significant difference in deceased donors (20.3 versus 15.4, respectively). Overall, no significant difference was observed in rates of kidney (35.2 versus 42.3 respectively), non-renal (28.7 versus 20.9, respectively), or total solid organ transplantation (63.6 versus 61.7, respectively). In a multivariate linear regression model, an opt-out system was independently predictive of fewer living donors but was not associated with the number of deceased donors or with transplantation rates. Apart from the observed difference in the rates of living donation, our data demonstrate no significant difference in deceased donation or solid organ transplantation activity between opt-out versus opt-in countries. This suggests that other barriers to organ donation must be addressed, even in settings where consent for donation is presumed.