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Posttraumatic stress following childbirth: psychometric properties of the Brazilian version of the City Birth Trauma Scale

de Lima Osório, F., Rossini Darwin, A. C., Bombonetti, E. A. and Ayers, S. ORCID: 0000-0002-6153-2460 (2021). Posttraumatic stress following childbirth: psychometric properties of the Brazilian version of the City Birth Trauma Scale. Journal of Psychosomatic Obstetrics & Gynecology, doi: 10.1080/0167482X.2021.1977278

Abstract

OBJECTIVE: To seek validity and reliability evidence of the Brazilian version of the City Birth Trauma Scale (BiTS-Br) and establish diagnostic accuracy.

METHOD: A total of 343 mothers (up to one year after childbirth, 30.8 years old on average) completed the BiTs-Br and other instruments screening for posttraumatic stress disorder (PTSD), depression, and anxiety for convergent validity analysis. Structural validity was verified using exploratory techniques (principal components analysis), while discriminant validity was checked using the known-groups method and ROC curve. The Structured Clinical Interview for DSM-5 was applied via telephone interviews. Test-retest reliability was obtained in a 15-30-d interval.

RESULTS: A two-factor structure was found (birth-related and general symptoms), with excellent test-retest reliability (0.73) and internal consistency (0.91). Moderate/strong associations (>0.62) were found with correlated symptoms and posttraumatic stress. The scale had a diagnostic accuracy of 86.7% and a cutoff point >28 was the most appropriate, with a sensitivity of 72% and specificity of 83%.

CONCLUSIONS: BiTS-Br presented excellent psychometric indexes, similar to the original version and other cross-culturally adapted versions. Thus, it can be widely used in scientific research and clinical settings to support the identification and treatment of PTSD.

Publication Type: Article
Additional Information: This is an Accepted Manuscript version of the following article, accepted for publication in Journal of Psychosomatic Obstetrics & Gynecology. de Lima Osório, F., Rossini Darwin, A. C., Bombonetti, E. A. and Ayers, S. (2021). Posttraumatic stress following childbirth: psychometric properties of the Brazilian version of the City Birth Trauma Scale. Journal of Psychosomatic Obstetrics & Gynecology, doi: 10.1080/0167482X.2021.1977278 . It is deposited under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Publisher Keywords: Stress disorders, post-traumatic, birth, scale, psychometric
Subjects: B Philosophy. Psychology. Religion > BF Psychology
F History United States, Canada, Latin America > F1201 Latin America (General)
R Medicine > RG Gynecology and obstetrics
Departments: School of Health Sciences > Midwifery & Radiography
Project Input:
Project IDFunder NameFunder ID
Process No. 2019/27043-8São Paulo Research Foundationhttp://dx.doi.org/10.13039/501100001807
Process No. 302601/2019-8National Council for Scientific and Technological DevelopmentUNSPECIFIED
Date available in CRO: 18 Nov 2021 14:44
Date deposited: 18 November 2021
Date of acceptance: 1 September 2021
Date of first online publication: 27 September 2021
URI: https://openaccess.city.ac.uk/id/eprint/27111
[img] Text - Accepted Version
This document is not freely accessible until 21 September 2022 due to copyright restrictions.
Available under License Creative Commons Attribution Non-commercial.

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