Validation Of The Italian Version Of The Peritraumatic Distress Inventory: Validity, Reliability And Factor Analysis In A Sample Of Healthcare Workers

Background: Peritraumatic distress as assessed by the Peritraumatic Distress Inventory (PDI), has been consistently shown to predict the development of Posttraumatic Stress Disorder (PTSD) after the exposure to a potentially traumatizing event.Objective: The present study aims to validate the Italian version of the PDI in a sample of Healthcare Workers (HCWs) exposed to COVID-19 related potentially traumatizing events.Method: N = 265 HCWs who repeatedly experienced the deaths of patients during COVID-19 emergency in Italy, were enrolled from the Azienda Ospedaliero-Universitaria Pisana (Pisa, Italy). They completed the PDI, Impact Event Scale - revised (IES-R) and the reactions to losses or upsetting events Trauma and Loss Spectrum - Self Report (TALS-SR) domain.Results: Internal consistency was good with a Cronbach's alpha coefficient was .874. The PDI correlated strongly with measures that was conceptually close (TALS-SR reactions to losses or upsetting events domain; r = .723, p < .001). Participants who scored above the cut-off for PTSD reported significantly higher PDI scores than those who did not (6.47 +/- 5.25 vs. 19.11 +/- 8.291, p < 0.001). The one-month test-retest reliability (n = 21) was excellent (ICC = .997). Finally, factor analyses revealed that the PDI exhibited a single-factor structure.Conclusions: the Italian version of the PDI showed good psychometric proprieties and may be used to detect those at risk for developing PTSD.