The Birthplace in England national prospective cohort study: further analyses to enhance policy and service delivery decision-making for planned place of birth

Policies and Practices on Out-of-Hospital Birth: a Review of Qualitative Studies in the Time of Coronavirus

Purpose of Review

The purpose of this review is to summarize the current knowledge on out-of-hospital births (at home or in an independent birth center) in high-income countries in the time of coronavirus. Qualitative studies published between 2020 and 2022 providing findings on women's and health providers' perspectives and experiences, as well as policies and practices implemented, are synthetized.

Recent Findings

During the COVID-19 pandemic, the number of women choosing the home or a birth center to deliver has grown considerably. Main reasons for this choice include fear of contagion in facilities and restrictions during delivery and the post-partum period, especially women's separation from their companion of choice and their newborn. Findings suggest that homebirth within a public model has several advantages in the experience of birth for both women and professionals during the pandemic period, maintaining the benefits of biomedicine when needed.

Summary

During the COVID-19 pandemic, the interest in out-of-hospital birth increased in high-income countries, and the number of women choosing the home or a birth center to deliver has grown considerably. This review aims to give a more in-depth understanding of women's and health providers' perspectives on and experiences of out-of-hospital birth services during this period. Twenty-five studies in different countries, including the USA, Canada, Australia, Switzerland, the Netherlands, the UK, Spain, Croatia, and Norway, were reviewed. Findings stress that out-of-hospital birth has allowed women to deliver according to their wishes and needs. In addition, the pandemic experience represents an opportunity for policy to better support and integrate out-of-hospital services in the health care system in the future.

Outcomes for women admitted for labour care to alongside midwifery units in the UK following a postpartum haemorrhage in a previous pregnancy: A national population-based cohort and nested case-control study using the UK Midwifery Study System (UKMidSS)

BACKGROUND

Women who have experienced a postpartum haemorrhage (PPH) 'requiring treatment or transfusion' are typically advised to plan birth in obstetric-led settings in subsequent pregnancies. Many UK alongside midwifery units (AMU) admit women for labour care following a previous PPH. We aimed to describe outcomes in women admitted for labour care to AMUs following a previous PPH, compare outcomes with other multiparous women admitted to the same AMUs, and explore risk factors for recurrence.

METHODS

A national cohort and nested case-control study using the UK Midwifery Study System (UKMidSS), between August 2018 and April 2019. Multivariable Poisson regression and logistic regression were performed to compare outcomes and investigate risk factors for recurrence.

FINDINGS

Women who experienced a previous PPH were significantly more likely than comparison women to: have a PPH requiring transfer to obstetric care (4·2% vs. 2·4%, aRR=1·65, 95% CI 1·14-2·38), be transferred to obstetric care for any reason (17·8% vs 11·9%; aRR=1·41; 95% CI 1·09-1·83), and have any PPH≥ 500 ml (22·7% vs 11·1%, aRR=1·86, 95% CI 1·49-2·32). Among women with a previous PPH, previous blood loss > 1500 ml; uterotonics for previous PPH; Caesarean associated with previous PPH; gestation at admission and higher birthweight were independent risk factors for PPH.

CONCLUSION

Women considering birth in an AMU after a previous PPH should be advised that they are at increased risk of experiencing a subsequent PPH requiring transfer to obstetric care, compared with other multiparous women who have not had a PPH. The absolute risk of a subsequent PPH in this group is low and comparable to the overall risk of having a PPH among women having a spontaneous vaginal birth in England.

Exploring women's decisions of where to give birth in the Peruvian Amazon; why do women continue to give birth at home? A qualitative study

Background

Despite improvements in maternal mortality globally, hundreds of women continue to die daily. The World Health Organisation therefore advises all women in low-and-middle income countries to give birth in healthcare facilities. Barriers to seeking intrapartum care have been described in Thaddeus and Maine’s Three Delays Model, however these decisions are complex and often unique to different settings. Loreto, a rural province in Peru has one of the highest homebirth rates in the country at 31.8%. The aim of this study was to explore facilitators and barriers to facility births and explore women’s experiences of intrapartum care in Amazonian Peru.

Methods

Through purposive sampling, postnatal women were recruited for semi-structured interviews (n = 25). Interviews were transcribed verbatim and thematically analysed. A combination of deductive and inductive coding was used. Analytical triangulation was undertaken, and data saturation was used to determine when no further interviews were necessary.

Results

Five themes were generated from the data: 1) Financial barriers; 2) Accessing care; 3) Fear of healthcare facilities; 4) Importance of seeking care and 5) Comfort and traditions of home. Generally, participants realised the importance of seeking skilled care however barriers persisted, across all areas of the Three Delays Model. Barriers identified included fear of healthcare facilities and interventions, direct and indirect costs, continuation of daily activities, distance and availability of transport. Women who delivered in healthcare facilities had mixed experiences, many reporting good attention, however a selection experienced poor treatment including abusive behaviour.

Conclusion

Despite free care, women continue to face barriers seeking obstetric care in Amazonian Peru, including fear of hospitals, cost and availability of transport. However, women accessing care do not always receive positive care experiences highlighting implications for changes in accessibility and provision of care. Minimising these barriers is critical to improve maternal and neonatal outcomes in rural Peru.

Planned Home Birth in Low-Risk Pregnancies in Spain: A Descriptive Study

Previous studies have shown that planned home birth in low-risk pregnancies is a generally safe option. However nowadays, only 0.5 percent of deliveries have been at home in Spain. This study sought to understand the characteristics of planned home births with qualified healthcare professionals in low-risk pregnancies and their results on maternal and neonatal health in the Balearic Islands. The study followed a retrospective descriptive design to investigate planned home births from 1989 to 2019 (n = 820). Sociodemographic data of women, healthcare professional intervention rates, and maternal/fetal morbidity/mortality results were collected. Statistical analysis of the results was performed using the IBM SPSS Version 25 software package. The results indicated that women with low-risk pregnancies who planned home births with a qualified midwife had a higher probability of spontaneous vaginal birth delivery and positive maternal health results. Furthermore, the risk of hospital transfer was low (10.7%) and the rate of prolonged breastfeeding (>1 year) was extremely high (99%). Moreover, the study showed that planned home births can be generally associated with fetal well-being. The conclusions and implications of this study are that planned home births in low-risk pregnancies attended by qualified midwives in the Balearic Islands achieve positive results in both maternal and newborn health, as well as low rates of obstetric intervention.

Neonatal admission and mortality in babies born in UK alongside midwifery units: a national population-based case-control study using the UK Midwifery Study System (UKMidSS)

OBJECTIVES

To determine the incidence of and risk factors for neonatal unit admission, intrapartum stillbirth or neonatal death without admission, and describe outcomes, in babies born in an alongside midwifery unit (AMU).

DESIGN

National population-based case-control study.

METHOD

We used the UK Midwifery Study System to identify and collect data about 1041 women who gave birth in AMUs, March 2017 to February 2018, whose babies were admitted to a neonatal unit or died (cases) and 1984 controls from the same AMUs. We used multivariable logistic regression, generating adjusted OR (aOR) with 95% CIs, to investigate maternal and intrapartum factors associated with neonatal admission or mortality.

RESULTS

The incidence of neonatal admission or mortality following birth in an AMU was 1.2%, comprising neonatal admission (1.2%) and mortality (0.01%). White 'other' ethnicity (aOR=1.28; 95% CI=1.01 to 1.63); nulliparity (aOR=2.09; 95% CI=1.78 to 2.45); ≥2 previous pregnancies ≥24 weeks' gestation (aOR=1.38; 95% CI=1.10 to 1.74); male sex (aOR=1.46; 95% CI=1.23 to 1.75); maternal pregnancy problem (aOR=1.40; 95% CI=1.03 to 1.90); prolonged (aOR=1.42; 95% CI=1.01 to 2.01) or unrecorded (aOR=1.38; 95% CI=1.05 to 1.81) second stage duration; opiate use (aOR=1.31; 95% CI=1.02 to 1.68); shoulder dystocia (aOR=5.06; 95% CI=3.00 to 8.52); birth weight <2500 g (aOR=4.12; 95% CI=1.97 to 8.60), 4000-4999 g (aOR=1.64; 95% CI=1.25 to 2.14) and ≥4500 g (aOR=2.10; 95% CI=1.17 to 3.76), were independently associated with neonatal admission or mortality. Among babies admitted (n=1038), 18% received intensive care. Nine babies died, six following neonatal admission. Sepsis (52%) and respiratory distress (42%) were the most common discharge diagnoses.

CONCLUSIONS

The results of this study are in line with other evidence on risk factors for neonatal admission, and reassuring in terms of the quality and safety of care in AMUs.

Understanding the conditions that influence the roles of midwives in Ontario, Canada's health system: an embedded single-case study

BACKGROUND

Despite the significant variability in the role and integration of midwifery across provincial and territorial health systems, there has been limited scholarly inquiry into whether, how and under what conditions midwifery has been assigned roles and integrated into Canada's health systems.

METHODS

We use Yin's (2014) embedded single-case study design, which allows for an in-depth exploration to qualitatively assess how, since the regulation of midwives in 1994, the Ontario health system has assigned roles to and integrated midwives as a service delivery option. Kingdon's agenda setting and 3i + E theoretical frameworks are used to analyze two recent key policy directions (decision to fund freestanding midwifery-led birth centres and the Patients First primary care reform) that presented opportunities for the integration of midwives into the health system. Data were collected from key informant interviews and documents.

RESULTS

Nineteen key informant interviews were conducted, and 50 documents were reviewed in addition to field notes taken during the interviews. Our findings suggest that while midwifery was created as a self-regulated profession in 1994, health-system transformation initiatives have restricted the profession's integration into Ontario's health system. The policy legacies of how past decisions influence the decisions possible today have the most explanatory power to understand why midwives have had limited integration into interprofessional maternity care. The most important policy legacies to emerge from the analyses were related to payment mechanisms. In the medical model, payment mechanisms privilege physician-provided and hospital-based services, while payment mechanisms in the midwifery model have imposed unintended restrictions on the profession's ability to practice in interprofessional environments.

CONCLUSIONS

This is the first study to explain why midwives have not been fully integrated into the Ontario health system, as well as the limitations placed on their roles and scope of practice. The study also builds a theoretical understanding of the integration process of healthcare professions within health systems and how policy legacies shape service delivery options.

Social Media and the Mediation of Childbirth: So, What for Mothers, Maternity, and Midwifery Practice?

Social media is fast becoming a global phenomenon with recent research providing insight into the complex inter-weaving relationship between the media and women and families over the childbirth continuum. Additionally, a growing body of evidence demonstrates a major cultural shift in the agency and information-seeking practices of women through social media. This perhaps suggests that services fall short of providing real and lived value to the women navigating through maternity systems in the United Kingdom, due to changes in culture and society. A deeper understanding of this phenomenon may help providers and practitioners offer care which better supports women's needs and enable them to develop innovative new approaches for future service provision. The aim of this article is to examine the literature and develop a deeper understanding of how social media may impact upon women, childbearing and midwifery practice via six domains. In conclusion, informational, experimental, and relational needs of women could be enhanced with funding and investment into the role of new expert tech-midwives using social media initiatives within maternity systems. Thus, supporting the demands of modern technology use by woman to elevate midwifery care provision and satisfaction and protect against the technocratic and patriarchal influence of childbirth. This synthesis of the literature through a western cultural lens may also be relevant to an international audience.

Computer-based intrapartum fetal monitoring and beyond: A review of the 2nd Workshop on Signal Processing and Monitoring in Labor (October 2017, Oxford, UK)

The second Signal Processing and Monitoring in Labor workshop gathered researchers who utilize promising new research strategies and initiatives to tackle the challenges of intrapartum fetal monitoring. The workshop included a series of lectures and discussions focusing on: new algorithms and techniques for cardiotocogoraphy (CTG) and electrocardiogram acquisition and analyses; the results of a CTG evaluation challenge comparing state-of-the-art computerized methods and visual interpretation for the detection of arterial cord pH <7.05 at birth; the lack of consensus about the role of intrapartum acidemia in the etiology of fetal brain injury; the differences between methods for CTG analysis "mimicking" expert clinicians and those derived from "data-driven" analyses; a critical review of the results from two randomized controlled trials testing the former in clinical practice; and relevant insights from modern physiology-based studies. We concluded that the automated algorithms performed comparably to each other and to clinical assessment of the CTG. However, the sensitivity and specificity urgently need to be improved (both computerized and visual assessment). Data-driven CTG evaluation requires further work with large multicenter datasets based on well-defined labor outcomes. And before first tests in the clinic, there are important lessons to be learnt from clinical trials that tested automated algorithms mimicking expert CTG interpretation. In addition, transabdominal fetal electrocardiogram monitoring provides reliable CTG traces and variability estimates; and fetal electrocardiogram waveform analysis is subject to promising new research. There is a clear need for close collaboration between computing and clinical experts. We believe that progress will be possible with multidisciplinary collaborative research.

Births and their outcomes by time, day and year: a retrospective birth cohort data linkage study

Background

Studies of daily variations in the numbers of births in England and Wales since the 1970s have found a pronounced weekly cycle, with numbers of daily births being highest from Tuesdays to Fridays and lowest at weekends and on public holidays. Mortality appeared to be higher at weekends. As time of birth was not included in national data systems until 2005, there have been no previous analyses by time of day.

Objectives

To link data from birth registration and birth notification to data about care during birth and any subsequent hospital admissions and to quality assure the linkage. To use the linked data to analyse births and their outcomes by time of day, day of the week and year of birth.

Design

A retrospective birth cohort analysis of linked routine data.

Setting

England and Wales.

Outcome measures

Mortality of babies and mothers, and morbidity recorded at birth and any subsequent hospital admission.

Population and data sources

Birth registration and notification records of 7,013,804 births in 2005–14, already linked to subsequent death registration records for babies, children and women who died within 1 year of giving birth, were provided by the Office for National Statistics. Stillbirths and neonatal deaths data from confidential enquiries for 2005–9 were linked to the registration records. Data for England were linked to Hospital Episode Statistics (HES) and data for Wales were linked to the Patient Episode Database for Wales and the National Community Child Health Database.

Results

Cross-sectional analysis of all births in England and Wales showed a regular weekly cycle. Numbers of births each day increased from Mondays to Fridays. Numbers were lowest at weekends and on public holidays. Overall, numbers of births peaked between 09.00 and 12.00, followed by a much smaller peak in the early afternoon and a decrease after 17.00. Numbers then increased from 20.00, peaking at around 03.00–05.00, before falling again after 06.00. Singleton births after spontaneous onset and birth, including births in freestanding midwifery units and at home, were most likely to occur between midnight and 06.00, peaking at 04.00–06.00. Elective caesarean births were concentrated in weekday mornings. Births after induced labours were more likely to occur at hours around midnight on Tuesdays to Saturdays, irrespective of the mode of birth.

Limitations

The project was delayed by data access and information technology infrastructure problems. Data from confidential enquiries were available only for 2005–9 and some HES variables were incomplete. There was insufficient time to analyse the mortality and morbidity outcomes.

Conclusions

The timing of birth varies by place of birth, onset of labour and mode of birth. These patterns have implications for midwifery and medical staffing.

Future work

An application has now been submitted for funding to analyse the mortality outcomes and further funding will be sought to undertake the other outstanding analyses.

Funding

This project was funded by the National Institute for Health Research (NIHR) Health Services and Delivery Research programme and will be published in full inHealth Services and Delivery Research; Vol. 7, No. 18. See the NIHR Journals Library website for further project information.

Barriers and facilitators to knowledge transfer and exchange in palliative care research

In order to ensure the effective transfer of research knowledge to those who can effect positive changes in practice, models of knowledge transfer and exchange (KTE) are required. Limited evidence exists as to how palliative care researchers use existing models to support their practice and to what extent they are perceived as effective. We set out to identify factors that influence KTE planning and implementation through semistructured interviews with experienced palliative care researchers in Ireland. Issues around KTE were drawn out through thematic analysis. Nine interviews were held with investigators on eight research projects. Ten themes were identified and categorised as either barriers or facilitators to KTE. Perceived barriers included inadequate time and funding, limited institutional capacity, competing priorities, weak communication channels and negative perceptions of palliative care. Perceived facilitators included dedicated time and resources, aligned priorities, strong professional networks, multipronged approach and KTE experience. In order to improve the quality, acceptability and reach of palliative research, it is vital that researchers improve their understanding of KTE within the context of palliative care, moving beyond academic dissemination to achieve research-informed practice by overcoming barriers to KTE through facilitated action. This study provides an overview of factors that influence KTE planning and implementation among palliative care researchers.

Reviewing progress in public involvement in NIHR research: developing and implementing a new vision for the future

OBJECTIVES

To review the progress of public involvement (PPI) in NIHR (National Institute for Health Research) research, identify barriers and enablers, reflect on the influence of PPI on the wider health research system in the UK and internationally and develop a vision for public involvement in research for 2025. The developing evidence base, growing institutional commitment and public involvement activity highlight its growth as a significant international social movement.

DESIGN

The 'Breaking Boundaries Review' was commissioned by the Department of Health. An expert advisory panel was convened. Data sources included: an online survey, international evidence sessions, workshop events, open submission of documents and supporting materials and existing systematic reviews. Thematic analysis identified key themes. NVivo was used for data management. The themes informed the report's vision, mission and recommendations, published as 'Going the Extra Mile-Improving the health and the wealth of the nation through public involvement in research'. The Review is now being implemented across the NIHR.

RESULTS

This paper reports the Review findings, the first of its type internationally. A range of barriers and enablers to progress were identified, including attitudes, resources, infrastructure, training and support and leadership. The importance of evidence to underpin practice and continuous improvement emerged. Co-production was identified as a concept central to strengthening public involvement in the future. The Vision and Mission are supported by four suggested measures of success, reach, refinement, relevance and relationships.

CONCLUSIONS

The NIHR is the first funder of its size and importance globally to review its approach to public involvement. While significant progress has been made, there is a need to consolidate progress and accelerate the spread of effective practice, drawing on evidence. The outcomes of the Review are being implemented across the NIHR. The findings and recommendations have transferability for other organisations, countries and individuals.

What are the risk factors associated with hospital birth among women planning to give birth in a birth center in Washington State?

BACKGROUND

Few studies have evaluated risk factors associated with hospital birth among women planning to give birth in a birth center in the United States. This study describes the obstetrical risk factors for hospital birth among women intending to deliver in a birth center in Washington State.

METHODS

We performed a retrospective cohort study of Washington State birth certificate data for women with singleton, term pregnancies planning to give birth at a birth center from 2004 to 2011. We assessed risk factors for hospital birth including demographic, obstetrical, and medical characteristics. We used multivariable logistic regression to estimate the odds ratio (OR) and 95% confidence interval (CI) of the association between risk factors and hospital birth.

RESULTS

Among the 7118 women planning to give birth at a birth center during the study period, 7% (N = 501) had a hospital birth, and 93% delivered at a birth center (N = 6617). The strongest risk factors for hospital transfer included nulliparity (OR 7.2 [95% CI 5.3-9.8]), maternal age >40 years (OR 3.7 [95% CI 2.1-6.7]), inadequate prenatal care (OR 3.7 [95% CI 2.7-5.0]), body mass index ≥30 (OR 2.1 [95% CI 1.6-3.0]), government health insurance (OR 9.3 [95% CI 5.0-17.1]), and hypertension (10.1 [95% CI 5.7-18.1]). Among nulliparous women, all of these demographic and obstetrical factors remained strongly associated with hospital birth.

CONCLUSIONS

This information may be useful for counseling women who plan a birth center birth about the risk of hospital birth.

Assessing Evidence-Informed Practices to Reduce Routine Interventions in Labor and Childbirth: Validating the Content of the Keeping Birth Normal Tool

Background:

The overuse of interventions in labor and childbirth increase the risk of mortality and morbidity in women. There are wide variations in the use of routine interventions locally, regionally, and globally. The reasons for this are complex and multifactorial. This study focuses its investigations at the microcosm of practice. It outlines the validation of the content of a new Tool to assess and support the implementation of evidence-informed practices by health-care professionals.

Methods:

Seven experts and eight women user representatives used a 4-point ordinal scale of relevance to rate 50 items in the Keeping Birth Normal (KBN) Tool. Item-level content validity index (I-CVI), an average scale-level content validity index (S-CVI/Ave), and qualitative comments were used to delete and improve items.

Results:

Eleven experts analyzed all 50 items. Four experts rated 35–49 items. The initial scale received an S-CVI/Ave of 0.88. Two items were deleted, improvements were made to 45 items, some were merged, and 7 new items were added. The final scale with 36 items received an S-CVI/Ave of 1.0 post item deletion and improvement.

Discussion:

The items in the KBN Tool are construct relevant and will undergo plausibility testing in a future study. Other forms of validity evidence on response processes and internal structure, which may be gathered, will depend on its further application in practice and research.

Positions during the first stage and the passive second stage of labor: A survey of French midwives

OBJECTIVE

the objective of our study was to describe the practices reported by French midwives during labor (first stage and passive phase of the second stage).

DESIGN

this cross-sectional internet questionnaire surveyed French midwives who attended at least one delivery in 2013.

SETTING

this open survey was posted on a website from June 15 through December 1, 2014.

PARTICIPANTS

1496 midwives from 377 maternity units participated in the study. Nearly 93% of the midwives worked in an obstetric unit, 5.9% had a mixed practice, and 1.3% worked in private practice.

MEASUREMENTS AND FINDINGS

during the first stage of labor, midwives reported suggesting that women without epidural analgesia use a birthing ball (98.1%) and that they walk around (97.4%). For women with epidural analgesia, most suggested motion in horizontal positions. Epidural analgesia was proposed more often by midwives from level II (75.7%) and level III (73.5%) maternity wards than by those at level 1 units (57.7%) (p<0.0001). The midwives preferred a lateral position during the first stage for women with epidural analgesia and during the second stage for women both with and without it. Midwives in practice for 5 years or less suggested a kneeling position for women with epidural analgesia more often than more experienced midwives.

KEY CONCLUSION

the practices of French midwives vary with their place of practice and their experience.

IMPLICATIONS FOR PRACTICE

to promote normal labor, French midwives must reappropriate vertical positions and analgesic alternatives to epidurals.

A comparison of intrapartum interventions and adverse outcomes by parity in planned freestanding midwifery unit and alongside midwifery unit births: secondary analysis of 'low risk' births in the birthplace in England cohort

BACKGROUND

For low risk women, there is good evidence that planned birth in a midwifery unit is associated with a reduced risk of maternal interventions compared with planned birth in an obstetric unit. Findings from the Birthplace cohort study have been interpreted by some as suggesting a reduced risk of interventions in planned births in freestanding midwifery units (FMUs) compared with planned births in alongside midwifery units (AMUs). However, possible differences have not been robustly investigated using individual-level Birthplace data.

METHODS

This was a secondary analysis of data on 'low risk' women with singleton, term, 'booked' pregnancies collected in the Birthplace national prospective cohort study. We used logistic regression to compare interventions and outcomes by parity in 11,265 planned FMU births and 16,673 planned AMU births, adjusted for potential confounders, using planned AMU birth as the reference group. Outcomes considered included adverse perinatal outcomes (Birthplace primary outcome measure), instrumental delivery, intrapartum caesarean section, 'straightforward vaginal birth', third or fourth degree perineal trauma, blood transfusion and maternal admission for higher-level care. We used a significance level of 1% for all secondary outcomes.

RESULTS

There was no significant difference in adverse perinatal outcomes between planned AMU and FMU births. The odds of instrumental delivery were reduced in planned FMU births (nulliparous: aOR 0.63, 99% CI 0.46-0.86; multiparous: aOR 0.41, 99% CI 0.25-0.68) and the odds of having a 'straightforward vaginal birth' were increased in planned FMU births compared with planned AMU births (nulliparous: aOR 1.47, 99% CI 1.17-1.85; multiparous: 1.86, 99% CI 1.35-2.57). The odds of intrapartum caesarean section did not differ significantly between the two settings (nulliparous: p = 0.147; multiparous: p = 0.224). The overall pattern of findings suggested a trend towards lower intervention rates and fewer adverse maternal outcomes in planned FMU births compared with planned AMU births.

CONCLUSIONS

The findings support the recommendation that 'low risk' women can be informed that planned birth in an FMU is associated with a lower rate of instrumental delivery and a higher rate of 'straightforward vaginal birth' compared with planned birth in an AMU; and that outcomes for babies do not appear to differ between FMUs and AMUs.

Maternal and perinatal outcomes in women planning vaginal birth after caesarean (VBAC) at home in England: secondary analysis of the Birthplace national prospective cohort study

OBJECTIVE

To compare vaginal birth rates in women planning vaginal birth after caesarean (VBAC) at home versus in an obstetric unit (OU) and explore transfer rates in women planning home VBAC.

DESIGN

Prospective cohort study.

SETTING

OUs and planned home births in England.

POPULATION

1436 women planning VBAC in the Birthplace cohort, including 209 planning home VBAC.

METHODS

We used Poisson regression to calculate relative risks adjusted for maternal characteristics.

MAIN OUTCOME MEASURES

MAIN OUTCOMES

(i) vaginal birth and (ii) transfer from planned home birth to OU during labour or immediately after birth.

SECONDARY OUTCOMES

(i) composite of maternal blood transfusion or admission to higher level care, (ii) stillbirth or Apgar score <7 at 5 minutes, (iii) neonatal unit admission.

RESULTS

Planned VBAC at home was associated with a statistically significant increase in the chances of having a vaginal birth compared with planned VBAC in an OU (adjusted relative risk 1.15, 95% confidence interval 1.06-1.24). The risk of an adverse maternal outcome was around 2-3% in both settings, with a similar risk of an adverse neonatal outcome. Transfer rates were high (37%) and varied markedly by parity (para 1, 56.7% versus para 2+, 24.6%).

CONCLUSION

Women in the cohort who planned VBAC at home had an increased chance of a vaginal birth compared with those planning VBAC in an OU, but transfer rates were high, particularly for women with only one previous birth, and the risk of an adverse maternal or perinatal outcome was around 2-3%. No change in guidance can be recommended.

TWEETABLE ABSTRACT

Higher vaginal birth rates in planned VBAC at home versus in OU but 2-3% adverse outcomes and high transfer rate.