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Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale

INTRODUCTION: Investigation into the psychological effects of violence toward health care workers and its associated trauma is increasing. The Impact of Event Scale (IES) provides a measure of current, subjective, emotional distress symptomatic of a specific traumatic event. However, its validity am...

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Autores principales: Hogan, Nicola, Costello, Shane, Boyle, Malcolm, Williams, Brett
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove Medical Press 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4687981/
https://www.ncbi.nlm.nih.gov/pubmed/26719731
http://dx.doi.org/10.2147/PRBM.S96647
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author Hogan, Nicola
Costello, Shane
Boyle, Malcolm
Williams, Brett
author_facet Hogan, Nicola
Costello, Shane
Boyle, Malcolm
Williams, Brett
author_sort Hogan, Nicola
collection PubMed
description INTRODUCTION: Investigation into the psychological effects of violence toward health care workers and its associated trauma is increasing. The Impact of Event Scale (IES) provides a measure of current, subjective, emotional distress symptomatic of a specific traumatic event. However, its validity among paramedics is largely unknown. PROBLEM: The purpose of this study was to investigate the psychometric properties and factor structure of the IES with a sample of Australian paramedics. METHODS: The study aimed to investigate the psychometric properties and factor structure of the 15-item IES with a sample of Australian paramedics using Exploratory Factor Analysis with model fit statistics as found in confirmatory analysis. RESULTS: Maximum Likelihood Factor Analysis with Varimax rotation supported the hypothesis that a two-factor solution would provide the best fit of the data. Procrustes rotation provided further support for this hypothesis indicating that the factors, labeled “Intrusion” and “Avoidance”, as well as the individual items of the 12-item final model, were a good fit to an ideal solution. CONCLUSION: The revision of the scale has improved its validity for use in the general population of paramedics, improving the potential for its use in trauma-related research.
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spelling pubmed-46879812015-12-30 Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale Hogan, Nicola Costello, Shane Boyle, Malcolm Williams, Brett Psychol Res Behav Manag Original Research INTRODUCTION: Investigation into the psychological effects of violence toward health care workers and its associated trauma is increasing. The Impact of Event Scale (IES) provides a measure of current, subjective, emotional distress symptomatic of a specific traumatic event. However, its validity among paramedics is largely unknown. PROBLEM: The purpose of this study was to investigate the psychometric properties and factor structure of the IES with a sample of Australian paramedics. METHODS: The study aimed to investigate the psychometric properties and factor structure of the 15-item IES with a sample of Australian paramedics using Exploratory Factor Analysis with model fit statistics as found in confirmatory analysis. RESULTS: Maximum Likelihood Factor Analysis with Varimax rotation supported the hypothesis that a two-factor solution would provide the best fit of the data. Procrustes rotation provided further support for this hypothesis indicating that the factors, labeled “Intrusion” and “Avoidance”, as well as the individual items of the 12-item final model, were a good fit to an ideal solution. CONCLUSION: The revision of the scale has improved its validity for use in the general population of paramedics, improving the potential for its use in trauma-related research. Dove Medical Press 2015-12-15 /pmc/articles/PMC4687981/ /pubmed/26719731 http://dx.doi.org/10.2147/PRBM.S96647 Text en © 2015 Hogan et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.
spellingShingle Original Research
Hogan, Nicola
Costello, Shane
Boyle, Malcolm
Williams, Brett
Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale
title Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale
title_full Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale
title_fullStr Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale
title_full_unstemmed Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale
title_short Measuring workplace trauma response in Australian paramedics: an investigation into the psychometric properties of the Impact of Event Scale
title_sort measuring workplace trauma response in australian paramedics: an investigation into the psychometric properties of the impact of event scale
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4687981/
https://www.ncbi.nlm.nih.gov/pubmed/26719731
http://dx.doi.org/10.2147/PRBM.S96647
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