Affiliations 

  • 1 Psychiatry and Behavioral Sciences Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran
  • 2 Faculty of Business and Law, Taylor's University, Subang Jaya, Malaysia
  • 3 Nursing, School of Nursing and Midwifery, Tehran University of Medical Science, Tehran, Iran
  • 4 Department of Nursing, School of Nursing, Alborz University of Medical Sciences, Karaj, Iran
  • 5 School of Nursing and Midwifery, Mazandaran University of Medical Science, Sari, Iran
  • 6 Taylor's Law School, Taylor's University, Subang Jaya, Malaysia
  • 7 School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran
Front Psychiatry, 2021;12:692498.
PMID: 34408679 DOI: 10.3389/fpsyt.2021.692498

Abstract

Objective: The aim of this study was to translate and evaluate the validity and reliability of the Impact of Events Scale-Revised (IES-R) among the Iranian general population during the coronavirus disease 2019 (COVID-19) pandemic. Method: This study was methodological cross-sectional. It was conducted on an Iranian public population from April to July 2020 which was during the COVID-19 pandemic. Construct validity was determined through exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) with a total of 500 adults recruited via online data gathering. Reliability was checked through the average inter-item correlation (AIC), Cronbach's alpha, and McDonald's omega. Convergent and divergent validity was determined using Fornell and Larcker's approach. Results: The results showed that the Persian version of IES-R had three factors, including intrusion (six items), avoidance (seven items), and hyperarousal (five items), that explained 59.22% of the total variance of the IES-R. The CFA findings indicated that all goodness-of-fit indices confirmed the model fit. The Cronbach's alpha, McDonald's omega, composite reliability (CR), and maximal reliability were excellent, and the three factors have good convergent validity. Conclusion: The findings of this study indicated that the Persian version of the IES-R scale is efficient and useful to assess post-traumatic stress disorder among Iran general population in the COVID-19 outbreak.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.