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DSM-5-Based ASD Models: Assessing the Latent Structural Relations with Functionality in War-Exposed Individuals.

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This study explored the structure of Acute Stress Disorder (ASD) in war veterans. The five-factor model best represents ASD, with distinct symptom clusters that are separate from functionality.

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Area of Science:

  • Psychiatry
  • Trauma Psychology
  • Mental Health Research

Background:

  • The Diagnostic and Statistical Manual for Mental Disorders, fifth edition (DSM-5) criteria for Acute Stress Disorder (ASD) lack a defined latent structure.
  • Existing research has not reached a consensus on the optimal model for representing ASD.
  • War-exposed populations provide a critical context for studying trauma-related disorders like ASD.

Purpose of the Study:

  • To investigate and compare four latent models of Acute Stress Disorder (ASD).
  • To identify the best-fitting model for ASD's underlying structure.
  • To examine the relationship between the identified ASD structure and functional impairment in a war-exposed sample.

Main Methods:

  • Utilized a sample of 424 individuals exposed to war.
  • Performed latent structure analysis to evaluate four distinct models of ASD.
  • Assessed the latent associations between the best-fitting ASD model's factors and measures of functionality.

Main Results:

  • The five-factor model, comprising intrusion, avoidance, numbing, dysphoric arousal, and anxious arousal, demonstrated the best fit for ASD.
  • Latent analyses indicated that functional impairment symptoms do not significantly influence the factor structure of ASD.
  • This suggests a distinct underlying mechanism for ASD symptoms separate from functional deficits.

Conclusions:

  • The five-factor model offers a robust representation of Acute Stress Disorder (ASD) in trauma-exposed populations.
  • Findings highlight the importance of considering ASD symptom clusters and functionality as separate entities.
  • This research can guide the development of more targeted interventions for ASD and related functional impairments.