We plan to work with 20 ARC drive sponsor sites. These sites will be randomly assigned to one of the following four treatment arms:
(1) Control: Participants at promotional/recruiting events in this group will receive standard information and materials typically provided by the ARC at these events. In particular, the account manager will deliver a presentation including standard information about the importance of giving blood and a generic appeal for the participants to consider becoming regular blood donors. This information will also be included in the flyer distributed to participants in this group.
(2) African-American Need for Blood: In addition to receiving standard information typically provided by the ARC at these events, participants at promotional/recruiting events in this group will receive information about sickle cell disease (a blood disease that disproportionally affect African Americans), emphasizing the importance for patients affected by sickle cell disease to receive blood from donors of the same ethnicity. This information will also be included in the flyer distributed to participants in this group.
(3) Identity: In addition to receiving the standard information as in the control group, the ARC personnel will emphasize that blood collected in a certain location is typically used in local hospitals (which is meant to suggest that the population of recipients is similar to the population of local residents); the flyer distributed among the participants will include similar language.
(4) Personal Examples: This experimental condition will include all elements from (2) and (3) and, in addition, it will include an in-person testimony by an African American member of the community who suffers from sickle cell anemia.