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Refereed/Peer-reviewed Background: Some research attention has been paid to women's experiences of water immersion for labour and/or birth. Development of a psychometric scale specific to water immersion may provide further insight into women's experiences Aim: The objective of this paper is to share the development, and preliminary psychometric evaluation, of the Water immersion Agency plus Expectations and Relief (WA+ER) scale for assessing women's experiences of using water for labour and/or birth Methods: Items for the WA+ER scale were informed by a thorough literature review, and review by midwifery experts. An online survey was conducted, and 17 items were rated on a 7-point Likert scale (from entirely disagree to entirely agree) by 740 women who had used water immersion for labour and/or birth Results: An initial exploratory factor analysis was conducted to determine the initial structure of the scale. A confirmatory factor analysis showed that the initial 17-items were not a ‘good fit’ but with further statistical exploration, a good fit was achieved with 11-items. Results identified three factors with good reliability: Sense of Agency (4 items; α = 0.87;), Expectations (3 items; α = 0.83) and Relief (4 items α = 0.82). A confirmatory factor analysis confirmed good model fit (CFI=0.93; GFI=0.91; AGFI=0.85; TLI=0.90) Conclusions: The WA+ER scale is a statistically and theoretically sound tool for measuring women's experiences of labouring and/or birthing in water. Additional testing is required to further assess the validity and reliability of the scale and to determine the appropriateness of its use in other populations.

Objective The objective of this study was to explore the views, experiences, perceptions of and access to water immersion for labor and birth in Australia. Design A sequential exploratory mixed methods study commenced in 2016. The first phase involved an online survey. The second phase is due to commence in 2019 and will involve focus groups and interviews. This paper presents a subset of results from phase one that asked women to self-rate the benefits and risks associated with water use on Likert-scales and for those who had a previous birth not involving water, how the two experiences compared. Participants A total of 740 Australian women who had used water immersion for labor and/or birth rated the benefits against 7-point Likert scales and 736 responded to 5-point Likert scales relating to commonly cited concerns surrounding the option. Results Women highly rated water immersion against all benefits. Benefits that were most highly rated (by numbers of ‘entirely agree’ on 7-point Likert scales) included sense of safety (80.14%), an alert baby (75.00%), a positive birth experience (72.70%), water as soothing (72.03%) and freedom of movement (71.35%). Women were most concerned (by selecting ‘somewhat’ to ‘extremely concerned’ on 5-point Likert scales) about being told to get out of the water when they did not want to (n = 120/736, 16.30%), their contractions going away (n = 76/736, 10.33%) and unsupportive staff (n = 65/736, 8.83%). More than 90% (n = 682/740) of women mostly to entirely agreed that they would recommend water immersion to others. Women rated water immersion as more comfortable, more satisfying and more relaxing when compared to previous births that they had that did not involve water. Key conclusions Women value water immersion for labor and birth. They have very little to no concern for the most common adverse events as documented in the literature. Implications for practice The results add to the growing evidence base surrounding water immersion for labor and birth. Whilst there remains ongoing debate about the safety of water immersion, women's experiences should be considered alongside outcome data. The results of this study may assist policy makers and clinicians in their advocacy and support of women who choose water immersion. Ethical considerations The Human Research Ethics Committee of the University of South Australia approved the research.