Psychometric Properties of the Posttraumatic Cognitions Inventory-9 items in an Iranian sample
The Posttraumatic Cognitions Inventory is a largely used measure to assess negative posttraumatic cognitions that are common among individuals with trauma-related disorders. There was a need to have a valid and reliable short form of it in Persian. This study aimed to translate the Posttraumatic Cog...
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Veröffentlicht in: | Trends in psychiatry and psychotherapy 2023-01 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The Posttraumatic Cognitions Inventory is a largely used measure to assess negative posttraumatic cognitions that are common among individuals with trauma-related disorders. There was a need to have a valid and reliable short form of it in Persian.
This study aimed to translate the Posttraumatic Cognitions Inventory-9 item (PTCI-9) into Persian, and evaluate its characteristics and psychometric properties.
This was a cross-sectional psychometric study using the translation and back-translation technique, experts assessed the content validity of the scale. Participants were 207 Iranian individuals recruited from the general population and 151 of them were trauma-exposed. Participants completed the Persian version of the PTCI-9, Beck Depression Inventory (BDI-II), and the WHO Quality of Life (WHO-QOL) scale. The psychometric properties of the Persian version of PTCI-9 were assessed using Exploration and Confirmatory factor analysis methods. Cronbach's α coefficient and Pearson's analysis were calculated, as well.
Factor analyses supported a 3-factor model including the Self, World, and Self-blame subscales. The Cronbach's alpha of the Persian version of PTCI-9 (α=0.74) and its subscales (0.76, 0.82, 0.78) demonstrated its acceptable reliability. The Persian PTCI-9 also had strong test-retest reliability (r=0.79). The correlation between the Persian version of PTCI-9 and the BDI-II (r=0.60), and WHO-QOL (r=-0.54) indicated the convergent validity of the scale.
The Persian version of PTCI-9 showed acceptable psychometric properties. It is a brief and pragmatic measure that can be used in Iranian trauma-exposed patients for research and clinical purposes. |
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ISSN: | 2237-6089 2238-0019 |
DOI: | 10.47626/2237-6089-2022-0534 |