Medical Reserve Corps Volunteers' Characteristics Affect Disaster Survival.

Medical Reserve Corps' volunteers underwent stop-the-bleed, triage, and disaster preparedness training to improve victim survival of a mass casualty event. Volunteer responses to 16 disaster vignettes were recorded as 'survived' if correct, or 'died' if incorrect. Volunteers' characteristics were evaluated based on the health outcomes of the vignette victims via logistic regression. Overall, 69 volunteers evaluated 1104 vignette victims. STB training significantly improved survival from 77.2% to 93.2% ( Psychological first aid training should be a basic requirement for disaster volunteers. Trust in public authority to provide protective public health recommendations increases disaster survival.