Promoting the Michigan organ donor registry: evaluating the impact of a multifaceted intervention utilizing media priming and communication design.

There are currently more than 100,000 individuals waiting for an organ transplant. Organ donor registries represent the easiest and most concrete way for people to declare their intent to donate, but organ donor registries are vastly underutilized. This study reports a campaign intervention designed to increase the rate of joining the Michigan Organ Donor Registry. Grounding intervention development in the theoretical principles of media priming and communication design, the intervention took place in two waves in three counties in Michigan. Each intervention consisted of a media component, point-of-decision materials, and an interpersonal component. Increases in registration rates of 200 to 300% in each intervention county, compared to stable statewide trends in registry rates, provide evidence of highly successful intervention efforts. The rate of registry increase in intervention counties was approximately 1,900% higher than statewide on a per capita basis.