The German W-DEQ version B—Factor structure and prediction of posttraumatic stress symptoms six weeks and one year after childbirth

The Tokophobia Severity Scale (TSS): measurement model, power and sample size considerations

OBJECTIVE

To examine the measurement model of the Tokophobia Severity Scale and consider issues of statistical power and sample size from the original instrument development study.

BACKGROUND

Fear of childbirth (FoC) and tokophobia represents an area of increasing concern within perinatal mental health research and clinical practice. Existing measures of the FoC have been criticised due to either measurement inconsistencies, difficulties in scoring or practical clinical application. Attempting to address these limitations, researchers developed the Tokophobia Severity Scale (TSS). A fundamental assumption underpinning the use of the TSS is unidimensionality, however this assertion may have been based on sub-optimal sample size and approach taken to factor structure determination.

METHOD

Parallel analysis (PA), principal components analysis (PCA), exploratory factor analysis (EFA), power analysis and sample size calculation using a reconstruction of the original dataset from published summary data.

RESULTS

Following replication of the original PCA, a three-factor model was found to offer a significantly better fit to data than a unidimensional model. Power analysis suggested the original study was underpowered.

CONCLUSION

The TSS remains a promising tool but assumptions regarding its measurement model are based on an inadequate sample size. Sample sizes for a sufficiently powered study indicated.

The Impact of Mode of Birth on Childbirth-Related Post Traumatic Stress Symptoms beyond 6 Months Postpartum: An Integrative Review

(1) Background: A traumatic birth can lead to the development of childbirth-related posttraumatic stress symptoms or disorder (CB-PTS/D). Literature has identified the risk factors for developing CB-PTS/D within the first six months postpartum thoroughly. However, the impact of mode of birth on CB-PTS/D beyond 6 months postpartum is scarcely studied. (2) Methods: A systematic search of the literature was conducted in the databases PubMed, Embase and CINAHL and PRISMA guidelines were followed. Studies were included if they reported the impact of mode of birth on CB-PTS/D beyond 6 months postpartum. (3) Results: In total, 26 quantitative and 2 qualitative studies were included. In the quantitative studies the percentage of women with CB-PTS/D ranged from 0.7% to 42% (between six months and five years postpartum). Compared with vaginal birth, operative vaginal birth, and emergency caesarean section were associated with CB-PTS/D beyond 6 months postpartum. Qualitative studies revealed that some women were suffering from CB-PTS/D as long as 18 years after birth. (4) Conclusions: Long- term screening of women for PTSD in the postnatal period could be beneficial. More research is needed on models of care that help prevent CB-PTS/D, identifying women at risk and factors that maintain CB-PTS/D beyond 6 months postpartum.

Psychometric properties of the European Portuguese version of the Wijma Delivery Expectancy/Experience Questionnaire in pregnant women

The researchers' aim is to examine the psychometric properties of the European Portuguese version of the Wijma Delivery Expectancy/Experience Questionnaire version A (WDEQ-A). Data from 669 pregnant Portuguese women was collected between June and October of 2019. From the initial 33-item Portuguese version of the WDEQ-A, a 27-item instrument was developed. Five-factor solution explained 63.8% of the total variance. The factors defined by the researchers were: fear/lack of self-efficacy, loneliness, negative appraisal, lack of positive anticipation and concern for the child. Cronbach's alpha coefficient was 0.934. The European Portuguese version of the WDEQ-A is a reliable and valid tool to measure fear of childbirth on both nulliparous and multiparous women and can be a useful tool for cross-cultural research. Moreover, researchers support the use of this tool in clinical practice to recognize and address fearful women during prenatal period.

[Questionnaires for the Assessment of Birth Expectancy and Birth Experience (Part 2 of a series on psychological assessment during the peripartum period)]

Giving birth is an intense experience and typically accompanied by severe pain. In addition to medical complications, subjective factors are likely to affect the birth experience. These include previous experiences with pregnancy and birth, previous traumatic experiences as well as birth expectations. Various questionnaires allow a standardized assessment of birth expectations and the birth experience. However, to date there is no questionnaire available in the German language that is based on diagnostic symptoms of birth-related posttraumatic stress disorder. Furthermore, current screening-tools were developed for women while men's perspectives have been neglected in research on the parental birth experience. Nonetheless, questionnaires seem to be well suited for the assessment of the birth experience of both mothers and fathers. In this way, support services could be expanded, since parents sometimes report a negative birth experience even in medically uncomplicated births. Along with the goal of enabling parents to have a positive birth experience, the prevention of the development of subclinical or even full-blown posttraumatic stress disorder after birth also plays an important role.

Validity and reliability of the Spanish version of the "Wijma Delivery Expectancy/Experience Questionnaire" (W-DEQ-B)

The Wijma Delivery Expectancy/Experience Questionnaire (W-DEQ-B) is an instrument that allows the experiences around fear of childbirth to be examined after the birth. It is currently the most widely used to measure different aspects related to the fear of childbirth and enables healthcare and additional assistance to women after birth to be adapted according to their needs. The objective of this study was to translate the W-DEQ-B into Spanish and analyse its reliability and validity. The study was carried out in two phases: (1) transcultural adaption of the questionnaire to Spanish and (2) a transversal study in a sample of 190 postpartum women from Sexual and Reproductive Health Clinics in the province of Barcelona (Spain). The psychometric properties were examined in terms of reliability (internal consistency and temporal stability) and construct validity (confirmatory factorial analysis [CFA] and exploratory factorial analysis [EFA]). The results of the CFA did not confirm unidimensionality of the W-DEQ-B questionnaire. The EFA suggested four very similar, but not identical, dimensions to those obtained in other studies in which the W-DEQ-B has been evaluated. Both the Cronbach's alpha and the omega coefficient were adequate for the total questionnaire and for each of the four dimensions. The results of this study confirm that the W-DEQ-B is multi-dimensional. In the Spanish version of the W-DEQ-B-Sp four dimensions have been identified that allow the experiences around fear of childbirth to be examined after the birth. The Spanish version of the WDEQ-B (WDEQ-B-Sp) is reliable and valid for the measurement of fear of childbirth in clinical practice and for use in future research.

Tokophobia and fear of birth: a workshop consensus statement on current issues and recommendations for future research

Objective: To discuss and develop a statement on the current state of the evidence and opinion in Fear of Childbirth (FoC) and Tokophobia (Tocophobia), and to provide recommendations. Background: A group met in 2019 to discuss the state of clinical and academic knowledge relating to FoC/Tokophobia. Five key areas were agreed as the focus of the meeting. Methods: 12 internationally acknowledged experts, in this or a closely related area (e.g. PTSD) met to discuss their understanding of the evidence for FoC/ Tokophobia and current practice. The consensus described in this paper constitutes the expression of the general opinion of the participants and does not necessarily imply unanimity. Keys points: Work focussed on tokophobia is recent and there remains a wide range of issues, which were addressed in the workshop including complexity in defining prevalence, a theoretical lack of understanding, which creates challenge for robust assessment and the identification of risk factors. An improved aetiological and developmental understanding of the tokophobia is required to underpin appropriate, effective and evidence-based interventions. Evaluation of pathways of care and relevant interventions, should be a focus of future research. Conclusion: Significant gaps remain within the FoC/tokophobia knowledge base. Further research is necessary.