Behavioral health correlates of the death of an acquaintance during a mass violence incident in six US communities.

Adults residing in communities that experience mass violence incidents (MVI) frequently experience adverse mental and behavioral health outcomes. However, little is known about the impact of experiencing the death of a close acquaintance during an MVI, which limits response efforts. Using a household probability sample of adults from six MVI-affected communities, this study examined the prevalence and correlates of posttraumatic stress disorder (PTSD), depression, and prolonged grief (PGD) among individuals residing in MVI-affected communities who experienced the death of a close acquaintance. 41.7% and 22.8% met criteria for past-year PTSD and depression, respectively. Nearly 1 in 5 and 1 in 10 met criteria for current PTSD and depression, respectively. Approximately 3.7% met criteria for PGD. Prior trauma exposure, low social support, and binge drinking were strong correlates of adverse outcomes. Individuals who experience the MVI-related death of an acquaintance in their community may be particularly vulnerable and warrant additional support.