Assessing the impact of an automated Web-based motivational interview on the intention and return behavior of Australian O-negative donors.

Background: O-negative donors are a critical resource for blood collection agencies, and their recruitment and retention provides an ongoing challenge. Motivational interviewing shows promise as a tool to promote donor retention, although concerns about scalability remain. The current study examined the effect of an automated Web-based interview drawing on motivational interviewing and self-determination theory on O-negative donors' motivation, intention, and behavior.

Study Design And Methods: Within 13 days of donating, 2820 O-negative donors completed baseline measures of motivation and intention before being randomly assigned to complete either a motivational interview (MI) or active control interview (ACI). Motivation and intention were assessed at 2 days and at 7 weeks after participation in the MI or ACI, with return behavior tracked for 6 months following trial completion.

Results: Changes in donor motivation and intention, rate, and time to return did not vary by participation in the MI or ACI. When compared with O-negative donors who experienced business-as-usual practices, donors completing the MI or ACI returned to donate more, and they returned more quickly. However, subsequent exploratory analyses considering the behavior of those who did not accept the invitation to participate and those who completed only baseline measures showed that the improved return behavior of donors in the MI or ACI conditions was likely not due to any specific properties of the MI or ACI activities.

Conclusions: Australian O-negative donors were highly internally motivated and committed to donating. An automated Web-based motivational interview appears to be of limited effectiveness in promoting the return of such donors.