Increasing organ donor registration enrollment inside motor vehicle facilities (MVF) is a common approach in the United States. From this research, a formula for what works has emerged within the literature including the presence of an interpersonal component, video messages, and point-of-decision materials. These intervention components have demonstrated effectiveness at increasing registrations in relatively new statewide registries; however, their effectiveness in MVFs with a mature registry remains understudied. The current study examined the effectiveness of an online MVF clerk intervention and the other examined the effectiveness of a multi-message, phase MVF intervention aimed at increasing organ donation registrations. The results revealed that MVF clerks garnered increased knowledge and greater comfort in communicating about organ donation with patrons after the intervention. Moreover, the intervention revealed that clerk talk effectiveness was positively associated with organ donation registration among MVF customers. Against expectations, recall of video messages was negatively associated with new registrations. Exposure to the brochure, counter mat, and poster donation messages was not associated with organ donation registration. An emphasis on the strengths and shortcomings of using MVFs as intervention sites for organ donation registration promotion are discussed.
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