Shevlin, M;
Hyland, P;
Roberts, NP;
Bisson, JI;
Brewin, CR;
Cloitre, M;
(2018)
A psychometric assessment of Disturbances in Self-Organization symptom indicators for ICD-11 Complex PTSD using the International Trauma Questionnaire.
European Journal of Psychotraumatology
, 9
(1)
, Article 1419749. 10.1080/20008198.2017.1419749.
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Abstract
BACKGROUND: Two 'sibling disorders' have been proposed for the 11th version of the International Classification of Diseases (ICD-11): Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD). To date, no research has attempted to identify the optimal symptom indicators for the 'Disturbances in Self-Organization' (DSO) symptom cluster. OBJECTIVE: The aim of the current study was to assess the psychometric performance of scores of 16 potential DSO symptom indicators from the International Trauma Questionnaire (ITQ). Criteria relating to score variability and their ability to discriminate were employed. METHOD: Participants (N = 1839) were a nationally representative household sample of non-institutionalized adults currently residing in the US. Item scores from the ITQ were examined in relation to basic criteria associated with interpretability, variability, homogeneity, and association with functional impairment. The performance of the DSO symptoms was also assessed using 1- and 2-parameter item response theory (IRT) models. RESULTS: The distribution of responses for all DSO indicators met the criteria associated with interpretability, variability, homogeneity, and association with functional impairment. The 1-parameter graded response model was considered the best model and indicated that each set of indictors performed very similarly. CONCLUSIONS: The ITQ contains 16 DSO symptom indicators and they perform well in measuring their respective symptom cluster. There was no evidence that particular indicators were 'better' than others, and it was concluded that the indicators are essentially interchangeable.
| Type: | Article |
|---|---|
| Title: | A psychometric assessment of Disturbances in Self-Organization symptom indicators for ICD-11 Complex PTSD using the International Trauma Questionnaire |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1080/20008198.2017.1419749 |
| Publisher version: | http://doi.org/10.1080/20008198.2017.1419749 |
| Language: | English |
| Additional information: | © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Disturbances in Self-Organization (DSO), ICD-11 Complex PTSD, ICD-11 PTSD, item response theory, • Two ‘sibling disorders’ have been proposed for the 11th version of the International Classification of Diseases (ICD-11): Posttraumatic Stress Disorder (PTSD) and Complex PTSD (CPTSD).• The definition of CPTSD includes the six PTSD symptoms but is distinguished from PTSD on the basis of an additional set of symptoms that reflect ‘Disturbances in Self-Organization’ (DSO).• DSO symptoms are defined by three clusters: (1) affective dysregulation (AD), (2) negative self-concept (NSC), and (3) disturbances in relationships (DR).• This study assessed the performance of 16 DSO symptom indicators from the International Trauma Questionnaire. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Clinical, Edu and Hlth Psychology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10043290 |
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