Assessment of childbirth-related post traumatic stress disorder in Australian mothers: Psychometric properties of the City Birth Trauma Scale.

Fameli, A-L; Costa, DSJ; Coddington, R; Hawes, DJ

Assessment of childbirth-related post traumatic stress disorder in Australian mothers: Psychometric properties of the City Birth Trauma Scale.

Fameli, A-L Costa, DSJ Coddington, R

Hawes, DJ

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: J Affect Disord, 2023, 324, pp. 559-565
Issue Date:: 2023-03-01

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Field	Value	Language
dc.contributor.author	Fameli, A-L
dc.contributor.author	Costa, DSJ
dc.contributor.author	Coddington, R https://orcid.org/0000-0003-2438-382X
dc.contributor.author	Hawes, DJ
dc.date.accessioned	2023-03-07T03:00:00Z
dc.date.available	2022-12-23
dc.date.available	2023-03-07T03:00:00Z
dc.date.issued	2023-03-01
dc.identifier.citation	J Affect Disord, 2023, 324, pp. 559-565
dc.identifier.issn	0165-0327
dc.identifier.issn	1573-2517
dc.identifier.uri	http://hdl.handle.net/10453/166692
dc.description.abstract	BACKGROUND: The City Birth Trauma Scale (BiTS; Ayers, Wright & Thornton, 2018) is self-report measure of Post-Traumatic Stress Disorder (PTSD) symptoms following childbirth, based on DSM-5 criteria. We report on the first study of the psychometric properties of the BiTS in the Australian population. METHODS: Participants were mothers of infants aged 0-12 months (N = 705), who completed the BiTS and measures of related constructs. Confirmatory factor analysis was performed to assess the factor structure of the BiTS. Examination of the reliability, convergent, divergent and discriminant validity and acceptability of the BiTS was also examined. RESULTS: Confirmatory factor analysis supported a bi-factor model of Birth-related Symptoms (BRS) and General Symptoms (GS) of post-partum PTSD as well as a global CB-PTSD factor. Internal consistency was found for the BiTS total scale and two proposed subscales (BRS and GS). BiTS total scores were significantly associated with an established measure of PTSD, providing support for convergent validity. Evidence of discriminant validity was examined by comparing the BiTS to an established measure of postpartum depression. LIMITATIONS: The present sample may over-represent participants with traumatic birth experiences in comparison to the general public. Furthermore, use of self-report measures limits the capacity to confirm the diagnostic status of participants. CONCLUSION: These findings suggest that the BiTS is a valid and reliable measure of childbirth-related PTSD, suited for use in postpartum populations. Total scores on the measure may be informative for clinical and research purposes, while evidence suggests strong support for interpretation of subscale scores.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier BV
dc.relation.ispartof	J Affect Disord
dc.relation.isbasedon	10.1016/j.jad.2022.12.123
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	11 Medical and Health Sciences, 17 Psychology and Cognitive Sciences
dc.subject.classification	Psychiatry
dc.subject.mesh	Pregnancy
dc.subject.mesh	Female
dc.subject.mesh	Infant
dc.subject.mesh	Humans
dc.subject.mesh	Stress Disorders, Post-Traumatic
dc.subject.mesh	Mothers
dc.subject.mesh	Psychometrics
dc.subject.mesh	Reproducibility of Results
dc.subject.mesh	Australia
dc.subject.mesh	Humans
dc.subject.mesh	Reproducibility of Results
dc.subject.mesh	Mothers
dc.subject.mesh	Stress Disorders, Post-Traumatic
dc.subject.mesh	Psychometrics
dc.subject.mesh	Pregnancy
dc.subject.mesh	Infant
dc.subject.mesh	Australia
dc.subject.mesh	Female
dc.title	Assessment of childbirth-related post traumatic stress disorder in Australian mothers: Psychometric properties of the City Birth Trauma Scale.
dc.type	Journal Article
utslib.citation.volume	324
utslib.location.activity	Netherlands
utslib.for	11 Medical and Health Sciences
utslib.for	17 Psychology and Cognitive Sciences
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
utslib.copyright.status	open_access	*
utslib.copyright.embargo	2024-03-01T00:00:00+1000Z
dc.date.updated	2023-03-07T02:59:59Z
pubs.publication-status	Published
pubs.volume	324

Abstract:

BACKGROUND: The City Birth Trauma Scale (BiTS; Ayers, Wright & Thornton, 2018) is self-report measure of Post-Traumatic Stress Disorder (PTSD) symptoms following childbirth, based on DSM-5 criteria. We report on the first study of the psychometric properties of the BiTS in the Australian population. METHODS: Participants were mothers of infants aged 0-12 months (N = 705), who completed the BiTS and measures of related constructs. Confirmatory factor analysis was performed to assess the factor structure of the BiTS. Examination of the reliability, convergent, divergent and discriminant validity and acceptability of the BiTS was also examined. RESULTS: Confirmatory factor analysis supported a bi-factor model of Birth-related Symptoms (BRS) and General Symptoms (GS) of post-partum PTSD as well as a global CB-PTSD factor. Internal consistency was found for the BiTS total scale and two proposed subscales (BRS and GS). BiTS total scores were significantly associated with an established measure of PTSD, providing support for convergent validity. Evidence of discriminant validity was examined by comparing the BiTS to an established measure of postpartum depression. LIMITATIONS: The present sample may over-represent participants with traumatic birth experiences in comparison to the general public. Furthermore, use of self-report measures limits the capacity to confirm the diagnostic status of participants. CONCLUSION: These findings suggest that the BiTS is a valid and reliable measure of childbirth-related PTSD, suited for use in postpartum populations. Total scores on the measure may be informative for clinical and research purposes, while evidence suggests strong support for interpretation of subscale scores.

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http://hdl.handle.net/10453/166692