Experiences of antenatal care practices to reduce stillbirth: surveys of women and healthcare professionals pre-post implementation of the Safer Baby Bundle.

BACKGROUND: The Safer Baby Bundle (SBB) aimed to reduce stillbirth rates in Australia through improving pregnancy care across five elements; smoking cessation, fetal growth restriction (FGR), decreased fetal movements (DFM), side sleeping in late pregnancy and decision making around timing of birth. We assessed experiences of women and healthcare professionals (HCPs) with antenatal care practices around the five elements. METHODS: A pre-post study design using online surveys was employed to assess change in HCPs awareness, knowledge, and frequency of performing recommended practices (22 in total) and women's experiences of care received related to reducing their chance of stillbirth. Women who had received antenatal care and HCPs (midwives and doctors) at services participating in the SBB implementation program in two Australian states were invited to participate. Surveys were distributed over January to July 2020 (pre) and August to December 2022 (post). Comparison of pre-post responses was undertaken using Fisher's exact, Pearson's chi-squared or Wilcoxon rank-sum tests. RESULTS: 1,225 women (pre-1096/post-129) and 1,415 HCPs (pre-1148/post-267, ≥ 83% midwives) completed the surveys. The frequency of HCPs performing best practice 'all the time' significantly improved post-SBB implementation across all elements including providing advice to women on side sleeping (20.4-79.4%, p < 0.001) and benefits of smoking cessation (54.5-74.5%, p < 0.001), provision of DFM brochure (43.2-85.1%, p < 0.001), risk assessments for FGR (59.2-84.1%, p < 0.001) and stillbirth (44.5-73.2%, p < 0.001). Practices around smoking cessation in general showed less improvement e.g. using the 'Ask, Advise and Help' brief advice model at each visit (15.6-20.3%, p = 0.088). Post-implementation more women recalled conversations about stillbirth and risk reduction (32.2-50.4%, p < 0.001) and most HCPs reported including these conversations in their routine care (35.1-83.0%, p < 0.001). Most HCPs agreed that the SBB had become part of their routine practice (85.0%). CONCLUSIONS: Implementation of the SBB was associated with improvements in practice across all targeted elements of care in stillbirth prevention including conversations with women around stillbirth risk reduction. Further consideration is needed around strategies to increase uptake of practices that were more resistant to change such as smoking cessation support. TRIAL REGISTRATION: The Safer Baby Bundle Study was retrospectively registered on the Australian New Zealand Clinical Trials Registry database, ACTRN12619001777189, date assigned 16/12/2019.

Increasing the number of midwives is necessary but not sufficient: using global data to support the case for investment in both midwife availability and the enabling work environment in low- and middle-income countries.

BACKGROUND: Most countries are off-track to achieve global maternal and newborn health goals. Global stakeholders agree that investment in midwifery is an important element of the solution. During a global shortage of health workers, strategic decisions must be made about how to configure services to achieve the best possible outcomes with the available resources. This paper aims to assess the relationship between the strength of low- and middle-income countries' (LMICs') midwifery profession and key maternal and newborn health outcomes, and thus to prompt policy dialogue about service configuration. METHODS: Using the most recent available data from publicly available global databases for the period 2000-2020, we conducted an ecological study to examine the association between the number of midwives per 10,000 population and: (i) maternal mortality, (ii) neonatal mortality, and (iii) caesarean birth rate in LMICs. We developed a composite measure of the strength of the midwifery profession, and examined its relationship with maternal mortality. RESULTS: In LMICs (especially low-income countries), higher availability of midwives is associated with lower maternal and neonatal mortality. In upper-middle-income countries, higher availability of midwives is associated with caesarean birth rates close to 10-15%. However, some countries achieved good outcomes without increasing midwife availability, and some have increased midwife availability and not achieved good outcomes. Similarly, while stronger midwifery service structures are associated with greater reductions in maternal mortality, this is not true in every country. CONCLUSIONS: A complex web of health system factors and social determinants contribute to maternal and newborn health outcomes, but there is enough evidence from this and other studies to indicate that midwives can be a highly cost-effective element of national strategies to improve these outcomes.

Rising caesarean section rates and factors affecting women's decision-making about mode of birth in Indonesia: a longitudinal qualitative study.

INTRODUCTION: Caesarean section (CS) rates in Indonesia are increasing rapidly. Understanding women's preferences about mode of birth is important to help contextualise these rising rates and can help develop interventions to optimise CS. This study aimed to explore Indonesian women's preferences and decision-making about mode of birth, and how their preferences may change throughout pregnancy and birth. METHODS: We conducted a longitudinal qualitative study using in-depth interviews with 28 women accessing private and public health facilities in Jakarta, the region with the highest CS rates. Interviews were conducted two times: during the woman's third trimester of pregnancy and in the postpartum period, between October 2022 and March 2023. We used a reflexive thematic approach for analysis. RESULTS: We generated three themes: (1) preferences about the mode of birth, (2) decision-making about the mode of birth and (3) regrets about the actual mode of birth. Most women preferred vaginal birth. However, they were influenced by advertisements promoting enhanced recovery after CS (ERACS) as an 'advanced technique' of CS, promising a comfortable, painless and faster recovery birth. This messaging influenced women to perceive CS as equivalent or even superior to vaginal birth. Where women's preferences for mode of birth shifted around the time of birth, this was primarily due to the obstetricians' discretion. Women felt they did not receive adequate information from obstetricians on the benefits and risks of CS and vaginal birth and felt disappointed when their actual mode of birth was not aligned with their preferences. CONCLUSION: Our study shows that despite rising CS rates, Indonesian women prefer vaginal birth. This highlights the need for better communication strategies and evidence-based information from healthcare providers. Given the rising popularity of ERACS, more work is urgently needed to standardise and regulate its use.

"If I am alive, I am happy": Defining quality of care from the perspectives of key maternal and newborn health stakeholders in Papua New Guinea.

Quality maternal and newborn healthcare is essential to improve experiences and health outcomes for mothers and babies. In many low to middle income countries, such as Papua New Guinea, there are initiatives to increase antenatal care attendance and facility births. To develop and implement initiatives that are appropriate, relevant, and contextualised to a community, it is important to understand how quality of care is perceived and defined by different maternal and newborn healthcare stakeholders. The aim of this study was to understand how women, their partners, healthcare professionals, healthcare managers, and provincial health administrators in East New Britain, Papua New Guinea define quality of pregnancy, childbirth, and immediate postnatal care. An exploratory qualitative study underpinned by a partnership-defined quality approach was undertaken. In total, 42 participants from five different healthcare facilities in East New Britain, Papua New Guinea, were interviewed. These included women, partners, healthcare professionals, healthcare managers, and provincial health administrators. Interviews were analysed using thematic analysis, assisted by NVivo computer software. Four themes were identified aligning with the journey a woman takes throughout the health system. These included (I) Ensuring Access: Arriving at the health centre, (II) Experiencing Positive Care: What the staff do, (III) Having the Bare Minimum: Resources available to the service, and (IV) Meeting Expectations: Outcomes of care. Stakeholder groups had significant overlap in how quality of care was defined, however women and partners focussed more on elements relating to experience of care, while clinical stakeholders focussed on elements relating to provision of care. There is a gap in how stakeholders define quality maternal and newborn healthcare, and the quality of the care which is administered and received.

Strategies for optimising early detection and obstetric first response management of postpartum haemorrhage at caesarean birth: a modified Delphi-based international expert consensus.

OBJECTIVE: There are no globally agreed on strategies on early detection and first response management of postpartum haemorrhage (PPH) during and after caesarean birth. Our study aimed to develop an international expert's consensus on evidence-based approaches for early detection and obstetric first response management of PPH intraoperatively and postoperatively in caesarean birth. DESIGN: Systematic review and three-stage modified Delphi expert consensus. SETTING: International. POPULATION: Panel of 22 global experts in PPH with diverse backgrounds, and gender, professional and geographic balance. OUTCOME MEASURES: Agreement or disagreement on strategies for early detection and first response management of PPH at caesarean birth. RESULTS: Experts agreed that the same PPH definition should apply to both vaginal and caesarean birth. For the intraoperative phase, the experts agreed that early detection should be accomplished via quantitative blood loss measurement, complemented by monitoring the woman's haemodynamic status; and that first response should be triggered once the woman loses at least 500 mL of blood with continued bleeding or when she exhibits clinical signs of haemodynamic instability, whichever occurs first. For the first response, experts agreed on immediate administration of uterotonics and tranexamic acid, examination to determine aetiology and rapid initiation of cause-specific responses. In the postoperative phase, the experts agreed that caesarean birth-related PPH should be detected primarily via frequently monitoring the woman's haemodynamic status and clinical signs and symptoms of internal bleeding, supplemented by cumulative blood loss assessment performed quantitatively or by visual estimation. Postoperative first response was determined to require an individualised approach. CONCLUSION: These agreed on proposed approaches could help improve the detection of PPH in the intraoperative and postoperative phases of caesarean birth and the first response management of intraoperative PPH. Determining how best to implement these strategies is a critical next step.

"It would be nice to have more than basic support": A learning needs assessment survey of midwifery faculty in low- and middle-income countries of the Asia Pacific region.

BACKGROUND: The provision of high-quality midwifery education relies on well-prepared educators. Faculty members need professional development and support to deliver quality midwifery education. AIM: To identify development needs of midwifery faculty in low- and middle-income countries of the Asia Pacific region, to inform program content and the development of guidelines for faculty development programs. METHODS: An online learning needs assessment survey was conducted with midwifery faculty from low- and middle-income countries in the Asia Pacific Region. Quantitative survey data were analysed using descriptive statistics. Textual data were condensed using a general inductive approach to summarise responses and establish links between research aim and findings. FINDINGS: One hundred and thirty-one faculty completed the survey and a high need for development in all aspects of faculty practice was identified. Development in research and publication was the top priority for faculty. Followed closely by leadership and management development, and then more traditional activities of teaching and curriculum development. Preferred mode of program delivery was a blended learning approach. DISCUSSION: Historically, programs of faculty development have primarily focussed on learning and teaching methods and educational development. Yet contemporary faculty members are expected to function in roles including scholarly activities of research and publication, institutional leadership and management, and program design and implementation. Unfortunately, programs of development are rarely based on identified need and fail to consider the expanded role expectation of contemporary faculty practice. CONCLUSION: Future midwifery faculty development programs should address the identified need for development in all expected faculty roles.

Pregnant and postpartum women's experiences of the indirect impacts of the COVID-19 pandemic in high-income countries: a qualitative evidence synthesis.

BACKGROUND: Pregnant and postpartum women's experiences of the COVID-19 pandemic, as well as the emotional and psychosocial impact of COVID-19 on perinatal health, has been well-documented across high-income countries. Increased anxiety and fear, isolation, as well as a disrupted pregnancy and postnatal period are widely described in many studies. The aim of this study was to explore, describe and synthesise studies that addressed the experiences of pregnant and postpartum women in high-income countries during the first two years of the pandemic. METHODS: A qualitative evidence synthesis of studies relating to women's experiences in high-income countries during the pandemic were included. Two reviewers extracted the data using a thematic synthesis approach and NVivo 20 software. The GRADE-CERQual (Confidence in the Evidence from Reviews of Qualitative research) was used to assess confidence in review findings. RESULTS: Sixty-eight studies were eligible and subjected to a sampling framework to ensure data richness. In total, 36 sampled studies contributed to the development of themes, sub-themes and review findings. There were six over-arching themes: (1) dealing with public health restrictions; (2) navigating changing health policies; (3) adapting to alternative ways of receiving social support; (4) dealing with impacts on their own mental health; (5) managing the new and changing information; and (6) being resilient and optimistic. Seventeen review findings were developed under these themes with high to moderate confidence according to the GRADE-CERQual assessment. CONCLUSIONS: The findings from this synthesis offer different strategies for practice and policy makers to better support women, babies and their families in future emergency responses. These strategies include optimising care delivery, enhancing communication, and supporting social and mental wellbeing.

Perceptions of quality of care in Midwife-led Birth Centres (MLBCs) in Uganda: Why do women choose MLBCs over other options?

BACKGROUND: Midwife-led birth centres (MLBCs) are associated with reduced childbirth interventions, higher satisfaction rates, and improved birth outcomes. The evidence on quality of care in MLBCs from low and middle-income countries (LMIC) is limited. AIM: This study aimed to explore the perceptions of women and midwives regarding the quality of care in four MLBCs in Uganda. METHODS: A qualitative study was conducted in four MLBCs in Uganda. We conducted interviews with women and midwives in the MLBCs to explore their perceptions and experiences related to care in the MLBCs. The study obtained ethical approval. Deductive thematic analysis was used for data analysis. RESULTS: Three key themes were identified regarding the perceptions of women and midwives about the quality of care in the MLBCs: providing respectful, and dignified care; a focus on woman-centred care; and reasons for choosing care in the MLBC. Women valued the respectful and humane care characterised by dignified and non-discriminatory care, non-abandonment, privacy, and consented care. The woman-centred care in the MLBC involved individualised holistic care, providing autonomy and empowerment, continuity of care, promoting positive birth experience, confidence in the woman's own abilities, and responsive providers. Women chose MLBCs because the services were perceived to be available, accessible, affordable, with comprehensive and effective referral mechanisms. CONCLUSION: Women perceived care to be respectful, woman-centred, and of good quality. Global attention should be directed to scaling up the establishment of MLBCs, especially in LMIC, to improve the positive childbirth experience and increase access to care.

Midwife-led birthing centres in Bangladesh, Pakistan and Uganda: an economic evaluation of case study sites.

INTRODUCTION: Achieving the Sustainable Development Goals to reduce maternal and neonatal mortality rates will require the expansion and strengthening of quality maternal health services. Midwife-led birth centres (MLBCs) are an alternative to hospital-based care for low-risk pregnancies where the lead professional at the time of birth is a trained midwife. These have been used in many countries to improve birth outcomes. METHODS: The cost analysis used primary data collection from four MLBCs in Bangladesh, Pakistan and Uganda (n=12 MLBC sites). Modelled cost-effectiveness analysis was conducted to compare the incremental cost-effectiveness ratio (ICER), measured as incremental cost per disability-adjusted life-year (DALY) averted, of MLBCs to standard care in each country. Results were presented in 2022 US dollars. RESULTS: Cost per birth in MLBCs varied greatly within and between countries, from US$21 per birth at site 3, Bangladesh to US$2374 at site 2, Uganda. Midwife salary and facility operation costs were the primary drivers of costs in most MLBCs. Six of the 12 MLBCs produced better health outcomes at a lower cost (dominated) compared with standard care; and three produced better health outcomes at a higher cost compared with standard care, with ICERs ranging from US$571/DALY averted to US$55 942/DALY averted. CONCLUSION: MLBCs appear to be able to produce better health outcomes at lower cost or be highly cost-effective compared with standard care. Costs do vary across sites and settings, and so further exploration of costs and cost-effectiveness as a part of implementation and establishment activities should be a priority.

Point-of-care testing and treatment of sexually transmitted and genital infections to improve birth outcomes in high-burden, low-resource settings (WANTAIM): a pragmatic cluster randomised crossover trial in Papua New Guinea.

BACKGROUND: Chlamydia trachomatis, Neisseria gonorrhoeae, Trichomonas vaginalis, and bacterial vaginosis have been associated with adverse maternal and perinatal outcomes, but there is conflicting evidence on the benefits of antenatal screening and treatment for these conditions. We aimed to determine the effect of antenatal point-of-care testing and immediate treatment of C trachomatis, N gonorrhoeae, T vaginalis, and bacterial vaginosis on preterm birth, low birthweight, and other adverse maternal and perinatal outcomes compared with current standard of care, which included symptom-based treatment without laboratory confirmation. METHODS: In this pragmatic cluster randomised crossover trial, we enrolled women (aged ≥16 years) attending an antenatal clinic at 26 weeks' gestation or earlier (confirmed by obstetric ultrasound), living within approximately 1 h drive of a study clinic, and able to provide reliable contact details at ten primary health facilities and their catchment communities (clusters) in Papua New Guinea. Clusters were randomly allocated 1:1 to receive either the intervention or control (standard care) in the first phase of the trial. Following an interval (washout period) of 2-3 months at the end of the first phase, each cluster crossed over to the other group. Randomisation was stratified by province. Individual participants were informed about trial group allocation only after completing informed consent procedures. The primary outcome was a composite of preterm birth (livebirth before 37 weeks' gestation), low birthweight (<2500 g), or both, analysed according to the intention-to-treat population. This study is registered with ISRCTN Registry, ISRCTN37134032, and is completed. FINDINGS: Between July 26, 2017, and Aug 30, 2021, 4526 women were enrolled (2210 [63·3%] of 3492 women in the intervention group and 2316 [62·8%] of 3687 in the control group). Primary outcome data were available for 4297 (94·9%) newborn babies of 4526 women. The proportion of preterm birth, low birthweight, or both, in the intervention group, expressed as the mean of crude proportions across clusters, was 18·8% (SD 4·7%) compared with 17·8% in the control group (risk ratio [RR] 1·06, 95% CI 0·78-1·42; p=0·67). There were 1052 serious adverse events reported (566 in the intervention group and 486 in the control group) among 929 trial participants, and no differences by trial group. INTERPRETATION: Point-of-care testing and treatment of C trachomatis, N gonorrhoeae, T vaginalis, and bacterial vaginosis did not reduce preterm birth or low birthweight compared with standard care. Within the subgroup of women with N gonorrhoeae, there was a substantial reduction in the primary outcome. FUNDING: UK Department of Health and Social Care; UK Foreign, Commonwealth and Development Office; UK Medical Research Council; the Wellcome Trust; the Australian National Health and Medical Research Council; and Swiss National Science Foundation.

An exploration of the contraceptive counselling practices of midwives who provide postpartum care in Australia.

OBJECTIVE: We sought to explore and describe midwives' attitudes and practices relating to their provision of postpartum contraception counselling. DESIGN: We used an exploratory cross-sectional design. Recruitment used an anonymous online survey using electronic communication platforms of professional, and special-interest organisations, over six months . Descriptive and quantitative analysis was used. SETTING AND PARTICIPANTS: Australian Midwives who provide postpartum care. MEANING AND FINDINGS: A total of 289 complete responses were included. Findings from this national survey of midwives showed that almost 75% of Australian midwives reported providing some contraceptive advice to women. Those working in continuity of care models were significantly more likely to fulfil this responsibility. More than half (67%) indicated they had not received any formal contraception education or training. Those working in private obstetric-led settings were significantly less likely to have received education compared to midwives in community settings. Systems barriers preventing the provision of contraceptive counselling included: clinical workload; lack of management support; lack of education; and models of care. KEY CONCLUSIONS: Most midwives (82%) wanted to provide postpartum contraception counselling as part of their role. They cited barriers from within the health system, ambiguity about roles and responsibilities and offered solutions to improve the provision of postnatal contraception counselling. IMPLICATIONS FOR PRACTICE: Recommendations include the development of education programs for midwives. Continuity of care models provided the time, autonomy and opportunity for midwives to undertake contraceptive counselling and fulfil this part of their professional scope. Consideration should be given to expanding access and provision of continuity of midwifery care. An urgent investment in the education and skills of midwives is recommended to ensure all women across acute and community services benefit from improved outcomes associated with pregnancy spacing.

Abortion care at 20 weeks and over in Victoria: a thematic analysis of healthcare providers' experiences.

BACKGROUND: In many countries, abortions at 20 weeks and over for indications other than fetal or maternal medicine are difficult to access due to legal restrictions and limited availability of services. The Abortion and Contraception Service at the Royal Women's Hospital in Victoria, Australia is the only service in the state that provides this service. The views and experiences of these abortion providers can give insight into the experiences of staff and women and the abortion system accessibility. The aim of this study was to examine health providers' perceptions and experiences of providing abortion care at 20 weeks and over for indications other than fetal or maternal medicine, as well as enablers and barriers to this care and how quality of care could be improved in one hospital in Victoria, Australia. METHODS: A qualitative study was conducted at the Abortion and Contraception Service at the Royal Women's Hospital. Participants were recruited by convenience and purposive sampling. Semi-structured interviews were conducted one-on-one with participants either online or in-person. A reflexive thematic analysis was performed. RESULTS: In total, 17 healthcare providers from medicine, nursing, midwifery, social work and Aboriginal clinical health backgrounds participated in the study. Ultimately, three themes were identified: 'Being committed to quality care: taking a holistic approach', 'Surmounting challenges: being an abortion provider is difficult', and 'Meeting external roadblocks: deficiencies in the wider healthcare system'. Participants felt well-supported by their team to provide person-centred and holistic care, while facing the emotional and ethical challenges of their role. The limited abortion workforce capacity in the wider healthcare system was perceived to compromise equitable access to care. CONCLUSIONS: Providers of abortion at 20 weeks and over for non-medicalised indications encounter systemic enablers and barriers to delivering care at personal, service delivery and healthcare levels. There is an urgent need for supportive policies and frameworks to strengthen and support the abortion provider workforce and expand provision of affordable, acceptable and accessible abortions at 20 weeks and over in Victoria and in Australia more broadly.

How do postnatal care guidelines in Australia compare to international standards? A scoping review and comparative analysis.

BACKGROUND: There is no single national guideline in Australia on the provision of postnatal care, which means there is potential for significant variation in the standard and quality of care. This review aimed to systematically identify, synthesise, and assess the quality of postnatal care guidelines produced for use in Australia. A second aim was to compare postnatal care recommendations in Australian guidelines to the National Institute for Health and Care Excellence's (NICE) and the World Health Organization's (WHO) postnatal care recommendations, to identify gaps and areas of disagreement. We focussed on recommendations regarding postnatal assessment of the woman or newborn, infant feeding, discharge planning, or community-based care. METHODS: A scoping review was undertaken informed by the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for scoping reviews. A database search and a manual search of state and national government health departments, professional associations and research institute websites was performed to identify relevant guidelines and recommendations. Guideline quality was assessed using the AGREE II tool. Guideline recommendations from Australia were mapped to 67 NICE/WHO recommendations. Recommendations that partially agreed, were modified, or in disagreement underwent further analysis. RESULTS: A total of 31 Australian postnatal guidelines were identified and overall, these were of moderate- to high-quality. Of the 67 NICE/WHO recommendations, most agreed with the recommendations contained in Australian guidelines. There were five NICE/WHO recommendations with which corresponding Australian recommendations disagreed. There were 12 NICE/WHO recommendations that were commonly modified within Australia's guidelines. There were three NICE/WHO recommendations that did not appear in any Australian guideline. CONCLUSIONS: Recommendations from postnatal guidelines in Australia have a high level of agreement with corresponding NICE/WHO recommendations. The few disagreements and modifications found in guideline recommendations - both across Australia's guidelines and between Australia's and the NICE/WHO guidelines - are worrying and warrant further examination, as they may result in different standards of care across Australia. Identified gaps in guidance should be prioritised for inclusion in new or updated guidelines where appropriate.

Effects of the WHO Labour Care Guide on cesarean section in India: a pragmatic, stepped-wedge, cluster-randomized pilot trial.

Cesarean section rates worldwide are rising, driven by medically unnecessary cesarean use. The new World Health Organization Labour Care Guide (LCG) aims to improve the quality of care for women during labor and childbirth. Using the LCG might reduce overuse of cesarean; however, its effects have not been evaluated in randomized trials. We conducted a stepped-wedge, cluster-randomized pilot trial in four hospitals in India to evaluate the implementation of an LCG strategy intervention, compared with routine care. We performed this trial to pilot the intervention and obtain preliminary effectiveness data, informing future research. Eligible clusters were four hospitals with >4,000 births annually and cesarean rates ≥30%. Eligible women were those giving birth at ≥20 weeks' gestation. One hospital transitioned to intervention every 2 months, according to a random sequence. The primary outcome was the cesarean rate among women in Robson Group 1 (that is, those who were nulliparous and gave birth to a singleton, term pregnancy in cephalic presentation and in spontaneous labor). A total of 26,331 participants gave birth. A 5.5% crude absolute reduction in the primary outcome was observed (45.2% versus 39.7%; relative risk 0.85, 95% confidence interval 0.54-1.33). Maternal process-of-care outcomes were not significantly different, though labor augmentation with oxytocin was 18.0% lower with the LCG strategy. No differences were observed for other health outcomes or women's birth experiences. These findings can guide future definitive effectiveness trials, particularly in settings where urgent reversal of rising cesarean section rates is needed. Clinical Trials Registry India number: CTRI/2021/01/030695 .

Likelihood of primary cesarean section following induction of labor in singleton cephalic pregnancies at term, compared with expectant management: An Australian population-based, historical cohort study.

INTRODUCTION: There has been increased use of both induction of labor (IOL) and cesarean section for women with term pregnancies in many high-income countries, and a trend toward birth at earlier gestational ages. Existing evidence regarding the association between IOL and cesarean section for term pregnancies is mixed and conflicting, and little evidence is available on the differential effect at each week of gestation, stratified by parity. MATERIAL AND METHODS: To explore the association between IOL and primary cesarean section for singleton cephalic pregnancies at term, compared with two definitions of expectant management (first: at or beyond the week of gestation at birth following IOL; and secondary: only beyond the week of gestation at birth following IOL), we performed analyses of population-based historical cohort data on women who gave birth in one Australian state (Queensland), between July 1, 2012 and June 30, 2018. Women who gave birth before 37+0 or after 41+6 weeks of gestation, had stillbirths, no-labor, multiple births (twins or triplets), non-cephalic presentation at birth, a previous cesarean section, or missing data on included variables were excluded. Four sub-datasets were created for each week at birth (37-40). Unadjusted relative risk, adjusted relative risk using modified Poisson regression, and their 95% confidence intervals were calculated in each sub-dataset. Analyses were stratified by parity (nulliparas vs. parous women with a previous vaginal birth). Sensitivity analyses were conducted by limiting to women with low-risk pregnancies. RESULTS: A total of 239 094 women were included in the analysis, 36.7% of whom gave birth following IOL. The likelihood of primary cesarean section following IOL in a Queensland population-based cohort was significantly higher at 38 and 39 weeks, compared with expectant management up to 41+6 weeks, for both nulliparas and paras with singleton cephalic pregnancies, regardless of risk status of pregnancy and definition of expectant management. No significant difference was found for nulliparas at 37 and 40 weeks; and for paras at 40 weeks. CONCLUSIONS: Future studies are suggested to investigate further the association between IOL and other maternal and neonatal outcomes at each week of gestation in different maternal populations, before making any recommendation.

Priority populations' experiences of isolation, quarantine and distancing for COVID-19: protocol for a longitudinal cohort study (Optimise Study).

INTRODUCTION: Longitudinal studies can provide timely and accurate information to evaluate and inform COVID-19 control and mitigation strategies and future pandemic preparedness. The Optimise Study is a multidisciplinary research platform established in the Australian state of Victoria in September 2020 to collect epidemiological, social, psychological and behavioural data from priority populations. It aims to understand changing public attitudes, behaviours and experiences of COVID-19 and inform epidemic modelling and support responsive government policy. METHODS AND ANALYSIS: This protocol paper describes the data collection procedures for the Optimise Study, an ongoing longitudinal cohort of ~1000 Victorian adults and their social networks. Participants are recruited using snowball sampling with a set of seeds and two waves of snowball recruitment. Seeds are purposively selected from priority groups, including recent COVID-19 cases and close contacts and people at heightened risk of infection and/or adverse outcomes of COVID-19 infection and/or public health measures. Participants complete a schedule of monthly quantitative surveys and daily diaries for up to 24 months, plus additional surveys annually for up to 48 months. Cohort participants are recruited for qualitative interviews at key time points to enable in-depth exploration of people's lived experiences. Separately, community representatives are invited to participate in community engagement groups, which review and interpret research findings to inform policy and practice recommendations. ETHICS AND DISSEMINATION: The Optimise longitudinal cohort and qualitative interviews are approved by the Alfred Hospital Human Research Ethics Committee (# 333/20). The Optimise Study CEG is approved by the La Trobe University Human Ethics Committee (# HEC20532). All participants provide informed verbal consent to enter the cohort, with additional consent provided prior to any of the sub studies. Study findings will be disseminated through public website (https://optimisecovid.com.au/study-findings/) and through peer-reviewed publications. TRIAL REGISTRATION NUMBER: NCT05323799.