The Peritraumatic Distress Inventory (PDI Brunet et al., 2001) was developed to better capture the emotional and physiological experience of individuals during and shortly after a traumatic event. Moreover, peritraumatic psychological processes, such as peritraumatic distress, are the strongest predictors of PTSD, beyond characteristics such as prior trauma and adjustment and family psychological history ( Ozer, Best, Lipsey, & Weiss, 2003). Elevated peritraumatic distress is associated with a higher likelihood of developing PTSD and related psychological difficulties ( Gorman, Engel-Rebitzer, Ledoux, Bovin, & Marx, 2014), and meta-analytic data indicate that peritraumatic distress is associated with increased PTSD severity (pooled correlation coefficient =. Peritraumatic distress is defined as the emotional and physiological distress experienced during and/or immediately after a traumatic event. Posttraumatic distress disorder (PTSD) is diagnostically unique in that it requires exposure to a specific, defining traumatic event or events (i.e., exposure to actual or threatened death, serious injury, or sexual violence) that precedes the onset of symptoms ( American Psychiatric Association, 2013). This study provides further evidence supporting the PDI as a valid and reliable measure of peritraumatic distress. Data suggested an optimal cutoff score of 23 (sensitivity = 71% specificity = 73%) for predicting clinically elevated PTSD 30-days post-injury. PDI scores predicted PTSD severity and positive PTSD screens (i.e., clinically elevated vs. The results confirmed previously proposed one- and two-factor solutions for the PDI. This study sought to assess the factor structure and predictive validity of the PDI with a clinical sample of 600 traumatically injured patients admitted to a Level I trauma center, 271 of whom completed a phone-based PTSD screening ~30-days post-injury. The Peritraumatic Distress Inventory (PDI) is a widely-used self-report measure for which psychometric evaluation has been limited. Peritraumatic distress is defined as the emotional and physiological distress experienced during and/or immediately after a traumatic event and is associated with the development and severity of posttraumatic stress disorder (PTSD) and related psychological difficulties.
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