ArticleRevista brasileira de psiquiatria (Sao Paulo, Brazil : 1999)2025
Item-wise validity study of the Impact of Event Scale-Revised: self-reported reactions of hospital personnel exposed to a stressful workplace.
Article in Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- A disaster in the disaster: a study on post-traumatic stress symptoms among flood relief workers in Pakistan.BMC psychology · 2026Article
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6 authors.
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Abstract
objectiveRecent studies have revealed a heterogeneous prevalence and presentation of post-traumatic stress disorder across countries. It is crucial to assess the methodological and item-level measurement factors that contribute to variations in mental disorder rates across cultures. This study aimed to investigate the traumatic experiences of hospital workers by employing item analysis of the Impact of Event Scale-Revised.
methodsData were collected from 1,000 employees of a large hospital during the coronavirus disease 2019 pandemic and were analyzed according to item response theory analysis regarding item pool discrimination (a) and difficulty (b) parameters.
resultsThe Impact of Event Scale-Revised items had good discriminative ability (a) and covered a range of distress severity (b) associated with traumatic experiences. According to our results, the Impact of Event Scale-Revised is a reliable and informative instrument for assessing individuals with moderate to severe trauma-related distress across the spectrum of trauma symptoms. In particular, items 10 ("jumpy or easily startled") and 6 ("I thought about it when I didn't mean to") reflected the post-traumatic stress disorder domains of hyperarousal and intrusion and excelled in discriminating between different levels of post-traumatic distress. Conversely, items related to avoidance and sleep disturbance showed lower discriminative ability.
conclusionsItem analysis of the Impact of Event Scale-Revised may be used to assess trauma symptoms in the context of a trauma exposure, identifying the most discriminative and informative items for measuring post-traumatic stress disorder in our context. Our findings may help refine the Impact of Event Scale-Revised and facilitate the development of a more effective scale with optimized item parameters.
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