We drew upon AI-SUPERPFP data to determine the distribution of four commonly used categories of qualifying traumatic events [2,6]: interpersonal, non-interpersonal, and witnessed traumas, and trauma to close others. We described conditional risk of PTSD by both trauma category and specific events. Finally, we examined the distribution of PTSD cases by trauma type and event. Embarking on this work, we expected conditional risk of PTSD to reflect patterns similar to those observed in the general population; in particular, we anticipated that risk would vary across trauma categories and events and by gender. Given earlier AI-SUPERPFP reports of similar distributions of traumas and overall prevalence of PTSD [6,11,16] by tribe, we did not foresee significant tribal variation.
