Gestational diabetes mellitus screening and diagnosis criteria before and during the COVID-19 pandemic: a retrospective pre-post study

OBJECTIVE

To determine whether perinatal outcomes after excluding gestational diabetes mellitus (GDM) on the basis of fasting venous plasma glucose (FVPG) assessment during the coronavirus disease 2019 (COVID-19) pandemic in 2020 were similar to those during the preceding year after excluding GDM using the standard oral glucose tolerance test (OGTT) procedure.

DESIGN

Retrospective pre-post study.

SETTING, PARTICIPANTS

All women who gave birth in Queensland during 1 July - 31 December 2019 and 1 July - 31 December 2020.

MAIN OUTCOME MEASURES

Perinatal (maternal and neonatal) outcomes for pregnant women assessed for GDM, by assessment method (2019: OGTT/glycated haemoglobin [HbA1c ] assessment; 2020: GDM could be excluded by an FVPG value below 4.7 mmol/L).

RESULTS

3968 of 29 113 pregnant women in Queensland during 1 July - 31 December 2019 (13.6%) were diagnosed with GDM, and 4029 of 28 778 during 1 July - 31 December 2020 (14.0%). In 2020, FVPG assessments established GDM in 216 women (1.1%) and excluded it in 1660 (5.8%). The frequencies of most perinatal outcomes were similar for women without GDM in 2019 and those for whom it was excluded in 2020 on the basis of FVPG values; the exception was caesarean delivery, for which the estimated probability increase in 2020 was 3.9 percentage points (95% credibility interval, 2.2-5.6 percentage points), corresponding to an extra 6.5 caesarean deliveries per 1000 births. The probabilities of several outcomes - respiratory distress, neonatal intensive care or special nursery admission, large for gestational age babies - were about one percentage point higher for women without GDM in 2020 (excluding those diagnosed on the basis of FVPG assessment alone) than for women without GDM in 2019.

CONCLUSIONS

Identifying women at low absolute risk of gestational diabetes-related pregnancy complications on the basis of FVPG assessment as an initial step in GDM screening could reduce the burden for pregnant women and save the health system substantial costs.

"Cos You're Quite Normal, Aren't You?": Epistemic and Deontic Orientations in the Presentation of Model of Care Talk in Antenatal Consultations

Women's involvement in decision-making around antenatal care is an issue of ongoing debate and discussion. Most research on the topic has used interview and focus group methods to examine women's perspectives. The present study uses a different kind of evidence. By analyzing recordings of actual antenatal consultations, this paper presents a preliminary exploration of model-of-care talk in a hospital setting where a policy of woman-centered care underpinned practice. Conversation Analysis was used to examine how model-of-care pathways were introduced by midwives and discussed with women in consultations. Drawing on interactional work on deontic (i.e., the rights and responsibilities of speakers to determine courses of action) and epistemic (i.e., speakers' claims to knowledge) orientations, this paper offers an account of how woman-centered care is accomplished in a hospital setting. The findings demonstrate how midwives routinely relied on their epistemic knowledge regarding women's health to invoke a "normal" categorization that worked to position midwifery-led care as an appropriate pathway. Examination of model-of-care talk also demonstrated how authority to choose a pathway was typically managed so as to reside with the woman. Talk that topicalized epidural forms of pain management were also examined, as institutional policy around where birth could occur in the hospital system under study restricted women's options (a planned epidural precluded woman access to midwifery-led care during delivery). The findings demonstrate the various ways in which midwives created opportunities for woman-centered care in an institutional setting in which there were logistical restrictions on women's choices.

Maternal Diet Quality, Body Mass Index and Resource Use in the Perinatal Period: An Observational Study

The impact of pre-pregnancy obesity and maternal diet quality on the use of healthcare resources during the perinatal period is underexplored. We assessed the effects of body mass index (BMI) and diet quality on the use of healthcare resources, to identify whether maternal diet quality may be effectively targeted to reduce antenatal heath care resource use, independent of women’s BMI. Cross-sectional data and inpatient medical records were gathered from pregnant women attending publicly funded antenatal outpatient clinics in Newcastle, Australia. Dietary intake was self-reported, using the Australian Eating Survey (AES) food frequency questionnaire, and diet quality was quantified from the AES subscale, the Australian Recommended Food Score (ARFS). Mean pre-pregnancy BMI was 28.8 kg/m² (range: 14.7 kg/m²–64 kg/m²). Mean ARFS was 28.8 (SD = 13.1). Higher BMI was associated with increased odds of caesarean delivery; women in obese class II (35.0–39.9 kg/m²) had significantly higher odds of caesarean delivery compared to women of normal weight, (OR = 2.13, 95% CI 1.03 to 4.39; p = 0.04). Using Australian Refined Diagnosis Related Group categories for birth admission, the average cost of the birth admission was $1348 more for women in the obese class II, and $1952 more for women in the obese class III, compared to women in a normal BMI weight class. Higher ARFS was associated with a small statistically significant reduction in maternal length of stay (RR = 1.24, 95% CI 1.00, 1.54; p = 0.05). There was no evidence of an association between ARFS and mode of delivery or “midwifery-in-the-home-visits”.

A review of the impact of financing mechanisms on maternal health care in Australia

BACKGROUND

The World Health Organization states there are three interrelated domains that are fundamental to achieving and maintaining universal access to care - raising sufficient funds for health care, reducing financial barriers to access by pooling funds in a way that prevents out-of-pocket costs, and allocating funds in a way that promotes quality, efficiency and equity. In Australia, a comprehensive account of the mechanisms for financing the health system have not been synthesised elsewhere. Therefore, to understand how the maternal health system is financed, this review aims to examine the mechanisms for funding, pooling and purchasing maternal health care and the influence these financing mechanisms have on the delivery of maternal health services in Australia.

METHODS

We conducted a scoping review and interpretative synthesis of the financing mechanisms and their impact on Australia's maternal health system. Due to the nature of the study question, the review had a major focus on grey literature. The search was undertaken in three stages including; searching (1) Google search engine (2) targeted websites and (3) academic databases. Executive summaries and table of contents were screened for grey literature documents and Titles and Abstracts were screened for journal articles. Screening of publications' full-text followed. Data relating to either funding, pooling, or purchasing of maternal health care were extracted for synthesis.

RESULTS

A total of 69 manuscripts were included in the synthesis, with 52 of those from the Google search engine and targeted website (grey literature) search. A total of 17 articles we included in the synthesis from the database search.

CONCLUSION

Our study provides a critical review of the mechanisms by which revenues are raised, funds are pooled and their impact on the way health care services are purchased for mothers and babies in Australia. Australia's maternal health system is financed via both public and private sources, which consequentially creates a two-tiered system. Mothers who can afford private health insurance - typically wealthier, urban and non-First Nations women - therefore receive additional benefits of private care, which further exacerbates inequity between these groups of mothers and babies. The increasing out of pocket costs associated with obstetric care may create a financial burden for women to access necessary care or it may cause them to skip care altogether if the costs are too great.

Evidence-based Birth Attendance in Spain: Private versus Public Centers

The type of hospital (public or private) has been associated with the type of clinical practice carried out. The purpose of this study was to determine the association between the type of hospital (public or private) and delivery attendance with practices based on the recommendations by the World Health Organization (WHO). A cross-sectional study with puerperal women (n = 2906) was conducted in Spain during 2017. The crude Odds Ratios (OR), adjusted (aOR) and their 95% confidence intervals (CI) were calculated through binary logistic regression. For multiparous women in private centers, a higher rate of induced labor was observed (aOR: 1.49; 95% CI: 1.11⁻2.00), fewer natural methods were used to relieve pain (aOR: 0.51; 95% CI: 0.35⁻0.73), and increased odds of cesarean section (aOR: 2.50; 95% CI: 1.81⁻3.46) were found as compared to public hospitals. For primiparous women in private centers, a greater use of the epidural was observed (aOR: 1.57; 95% CI: 1.03⁻1.40), as well as an increased likelihood of instrumental birth (aOR: 1.53; 95% CI: 1.09⁻2.15) and of cesarean section (aOR: 1.77; 95% CI: 1.33⁻2.37) than in public hospitals. No differences were found in hospitalization times among women giving birth in public and private centers (p > 0.05). The World Health Organization birth attendance recommendations are more strictly followed in public hospitals than in private settings.

Factors promoting or inhibiting normal birth

BACKGROUND

In response to rising rates of medical intervention in birth, there has been increased international interest in promoting normal birth (without induction of labour, epidural/spinal/general anaesthesia, episiotomy, forceps/vacuum, or caesarean section). However, there is limited evidence for how best to achieve increased rates of normal birth. In this study we examined the role of modifiable and non-modifiable factors in experiencing a normal birth using retrospective, self-reported data.

METHODS

Women who gave birth over a four-month period in Queensland, Australia, were invited to complete a questionnaire about their preferences for and experiences of pregnancy, labour, birth, and postnatal care. Responses (N = 5840) were analysed using multiple logistic regression models to identify associations with four aspects of normal birth: onset of labour, use of anaesthesia, mode of birth, and use of episiotomy. The probability of normal birth was then estimated by combining these models.

RESULTS

Overall, 28.7% of women experienced a normal birth. Probability of a normal birth was reduced for women who were primiparous, had a history of caesarean, had a multiple pregnancy, were older, had a more advanced gestational age, experienced pregnancy-related health conditions (gestational diabetes, low-lying placenta, high blood pressure), had continuous electronic fetal monitoring during labour, and knew only some of their care providers for labour and birth. Women had a higher probability of normal birth if they lived outside major metropolitan areas, did not receive private obstetric care, had freedom of movement throughout labour, received continuity of care in labour and birth, did not have an augmented labour, or gave birth in a non-supine position.

CONCLUSIONS

Our findings highlight several relevant modifiable factors including mobility, monitoring, and care provision during labour and birth, for increasing normal birth opportunity. An important step forward in promoting normal birth is increasing awareness of such relationships through patient involvement in informed decision-making and implementation of this evidence in care guidelines.

Comparison between public and private sectors of care and disparities in adverse neonatal outcomes following emergency intrapartum cesarean at term - A retrospective cohort study

BACKGROUND

Perinatal outcomes may be influenced by a variety of factors including maternal demographics and medical condition as well as socio-economic status. The evidence for disparities in health outcomes stratified by type of care (public or private) is lacking. The aim of this study was to investigate short term neonatal outcomes following category 1 and 2 emergency cesareans at term between publicly and privately funded women at a single major tertiary centre in Australia. Category 1-immediate threat to life (maternal or fetal); Category 2-maternal or fetal compromise that is not immediately life-threatening.

METHODS

This was a retrospective, cross sectional study of 61355 term singleton babies born at the Mater Mother's Hospital in Brisbane, Australia in 2007-2014. We collected data from the hospital's maternity database and compared maternal demographics, indications for cesarean and neonatal outcomes for publicly and privately funded women.

RESULTS

Over the study period there were 32477 public and 28878 private, term singleton births. Compared to the publicly funded cohort, privately insured women were older, had lower BMI, were of Caucasian ethnicity, Australian born, nulliparous, had shorter labors and had lower rates of hypertensive disorders and diabetes. The most common indications for category 1 and category 2 cesareans in combination were non-reassuring fetal status followed by failure to progress in labor and malpresentation. For both category 1 and 2 cesareans, neonatal outcomes (Apgar score <7 at 5 minutes, abnormal cord gases, Neonatal Critical Care Unit admission rates, rates of severe respiratory distress and jaundice) were significantly worse in the publicly funded compared to the privately insured cohort Multivariate analyses controlling for maternal age, ethnicity, country of birth, parity, hypertension, diabetes mellitus, gestational age at birth and length of labour confirmed that private insurance status was highly protective for the perinatal outcomes of Apgar score <7 at 5 minutes (aOR 0.26, 95% CI 0.13-0.55), admission to NCCU (OR 0.51, 95% CI 0.30-0.92) and respiratory distress (aOR 0.60, 95% CI 0.41-0.86).

CONCLUSION

Birth in the private health sector was inversely associated with adverse neonatal outcomes following category 1 and 2 cesareans.

Perinatal and social factors predicting caesarean birth in a 2004 Australian birth cohort

BACKGROUND

The proportion of babies born by caesarean section in Australia has almost doubled over the last 25 years. Factors known to contribute to caesarean such as higher maternal age, mothers being overweight or obese, or having had a previous caesarean do not completely account for the increased rate and it is clear that other influences exist.

AIM

To identify previously unsuspected risk factors associated with caesarean using nationally-representative data from the Longitudinal Study of Australian Children.

METHODS

Data were from the birth cohort, a long-term prospective study of approximately 5000 children that includes richly-detailed data regarding maternal health and exposures during pregnancy. Logistic regression was used to examine the contribution of a wide range of pregnancy, birth and social factors to caesarean.

FINDINGS

28% of 4862 mothers were delivered by caesarean. The final adjusted analyses revealed that use of diabetes medication (OR=3.1, 95% CI=1.7-5.5, p<0.001) and maternal mental health problems during pregnancy (OR=1.3, CI=1.1-1.6, p=0.003) were associated with increased odds of caesarean. Young maternal age (OR=0.6, CI=0.5-0.7, p<0.001), having two or more children (OR=0.7, CI=0.6-0.9, p<0.001), and fathers having an unskilled occupation (OR=0.7, CI=0.6-1.0, p=0.036) were associated with reduced odds of caesarean.

CONCLUSION

Our findings raise the prospect that the effect of additional screening and support for maternal mental health on caesarean rate should be subject of prospective study.

A critical analysis of the Australian Defence Force policy on maternal health care

OBJECTIVE

To critically analyse the Australian Defence Force (ADF) policy on maternal health care: Health Directive No 235 - Management of pregnant members in the Australian Defence Force.

METHOD

Bacchi's 'What's the problem represented to be' framework was used to analyse Health Directive No 235. This paper critically examines the representation of pregnancy and birth, the resulting effects and considers alternate representations.

RESULTS

The ADF's policy on maternal healthcare considers pregnancy as a health issue that requires specialist intervention and care, also known as the medicalisation of birth. Current research emphasises women-centred care; a model of care not contained in the ADF policy.

CONCLUSION

The problematisation of pregnancy in the ADF restricts women's choices regarding their maternal healthcare provider. This is contrary to the healthcare rights of Australians and likely contributes to health inequalities of ADF women. Implications for public health: A research gap regarding ADF women's knowledge and wishes regarding their maternal health care has been identified. Future research can inform any alterations to the ADF policy on maternal healthcare.

Public-private differences in short-term neonatal outcomes following birth by prelabour caesarean section at early and full term

BACKGROUND

Prelabour caesarean section (CS) at early term (37⁰ -38⁶  weeks) is associated with higher rates of adverse short-term neonatal outcomes and higher costs than those performed at full term (39⁰ -40⁶  weeks). Prelabour CS is more common in private than in public hospitals in Australia, particularly at early term.

AIMS

To evaluate the impact of hospital sector (public or private) and timing of delivery on short-term neonatal outcomes following prelabour CS at term.

MATERIALS AND METHODS

A retrospective cohort study of 22 954 viable singleton prelabour CS births at term (37⁰ -40⁶  weeks) at a single centre encompassing co-located public and private hospitals during 1998-2013 was undertaken. Propensity score analysis was used to adjust for confounding differences between sectors. The primary outcome was Neonatal Critical Care Unit (NCCU) admission with serious morbidity. Secondary outcomes included respiratory distress, vigorous resuscitation and jaundice.

RESULTS

The private hospital performed prelabour CS at over double the rate of the public hospital (33.7% of all private births vs 14.7% public) and more private than public prelabour CSs occurred at early term (66.8% vs 47.9%). Public babies were more than twice as likely as private babies to require admission to NCCU with serious morbidity (adjusted odds ratio (AOR) 2.54, 95% CI 1.77-3.65) but were less likely to need vigorous resuscitation (AOR 0.53, 95% CI 0.45-0.62). Disparities in outcomes between public and private cohorts were accentuated at full term.

CONCLUSION

Despite early-term prelabour CSs occurring more often in the private hospital, public babies had more adverse outcomes and treatment escalations.

Cost effectiveness of universal umbilical cord blood gas and lactate analysis in a tertiary level maternity unit

OBJECTIVE

There is an increasing body of literature supporting universal umbilical cord blood gas analysis (UCBGA) into all maternity units. A significant impediment to UCBGA's introduction is the perceived expense of the introduction and associated ongoing costs. Consequently, this study set out to conduct the first cost-effectiveness analysis of introducing universal UCBGA.

METHODS

Analysis was based on 42,100 consecutive deliveries ≥23 weeks of gestation at a single tertiary obstetric unit. Within 4 years of UCBGA's introduction there was a 45% reduction in term special care nursery (SCN) admissions >2499 g. Incurred costs included initial and ongoing costs associated with universal UCBGA. Averted costs were based on local diagnosis-related grouping costs for reduction in term SCN admissions. Incremental cost-effectiveness ratio (ICER) and sensitivity analysis results were reported.

RESULTS

Under the base-case scenario, the adoption of universal UCBGA was less costly and more effective than selective UCBGA over 4 years and resulted in saving of AU$641,532 while adverting 376 SCN admissions. Sensitivity analysis showed that UCBGA was cost-effective in 51.8%, 83.3%, 99.6% and 100% of simulations in years 1, 2, 3 and 4. These conclusions were not sensitive to wide, clinically possible variations in parameter values for neonatal intensive care unit and SCN admissions, magnitude of averted SCN admissions, cumulative delivery numbers, and SCN admission costs.

CONCLUSIONS

Universal UCBGA is associated with significant initial and ongoing costs; however, potential averted costs (due to reduced SCN admissions) exceed incurred costs in most scenarios.

Back to normal: A retrospective, cross-sectional study of the multi-factorial determinants of normal birth in Queensland, Australia

BACKGROUND

currently, care providers and policy-makers internationally are working to promote normal birth. In Australia, such initiatives are being implemented without any evidence of the prevalence or determinants of normal birth as a multidimensional construct. This study aimed to better understand the determinants of normal birth (defined as without induction of labour, epidural/spinal/general anaesthesia, forceps/vacuum, caesarean birth, or episiotomy) using secondary analyses of data from a population survey of women in Queensland, Australia.

METHODS

women who birthed in Queensland during a two-week period in 2009 were mailed a survey approximately three months after birth. Women (n=772) provided retrospective data on their pregnancy, labour and birth preferences and experiences, socio-demographic characteristics, and reproductive history. A series of logistic regressions were conducted to determine factors associated with having labour, having a vaginal birth, and having a normal birth.

FINDINGS

overall, 81.9% of women had labour, 66.4% had a vaginal birth, and 29.6% had a normal birth. After adjusting for other significant factors, women had significantly higher odds of having labour if they birthed in a public hospital and had a pre-existing preference for a vaginal birth. Of women who had labour, 80.8% had a vaginal birth. Women who had labour had significantly higher odds of having a vaginal birth if they attended antenatal classes, did not have continuous fetal monitoring, felt able to 'take their time' in labour, and had a pre-existing preference for a vaginal birth. Of women who had a vaginal birth, 44.7% had a normal birth. Women who had a vaginal birth had significantly higher odds of having a normal birth if they birthed in a public hospital, birthed outside regular business hours, had mobility in labour, did not have continuous fetal monitoring, and were non-supine during birth.

CONCLUSIONS

these findings provide a strong foundation on which to base resources aimed at increasing informed decision-making for maternity care consumers, providers, and policy-makers alike. Research to evaluate the impact of modifying key clinical practices (e.g., supporting women׳s mobility during labour, facilitating non-supine positioning during birth) on the likelihood of a normal birth is an important next step.

Pregnancy outcome at term in low-risk population: study at a tertiary obstetric hospital

AIM

The aim of this study was to evaluate the risk of perinatal death and peripartum morbidity at term amongst the models of care at a single tertiary hospital.

MATERIAL AND METHODS

This is a 10-year population study of singleton births at term at the Mercy Hospital for Women comparing the mixed-risk models of care (private obstetrician and a conventional collaborative model of obstetricians and midwives) with the low-risk models (team midwifery and family birth center). Outcome measures included rates of perinatal death, low Apgar scores and obstetric procedures.

RESULTS

Data on 44 557 normal term singletons were available for study. Overall, the hospital has a substantially lower term singleton perinatal mortality (1.3/1000) than the reported rate from the state of Victoria over an overlapping period (2.4/1000). The perinatal mortality amongst women selected for low obstetric risk (2.3/1000) was significantly higher than the perinatal mortality in other patients (1.2/1000; P = 0.03). Low Apgar scores at 5 min were also significantly more likely in women selected for low obstetric risk (9.0 vs 6.7/1000; P = 0.03). The differences could not be attributed to socioeconomic status, as this was higher in the low obstetric risk group. Obstetric procedures (induction of labor, cesarean section and instrumental birth) were substantially less common in the low-risk-care patients, as is expected for a low-risk population.

CONCLUSION

Women selected for low-risk under midwife-led models of care do not appear to have better outcomes than women with all levels of perinatal risk cared for under traditional obstetrician-led models of care.

Beyond the hospital door: a retrospective, cohort study of associations between birthing in the public or private sector and women's postpartum care

Background

In Australia, maternity care is available through universal coverage and a parallel, competitive private health insurance system. Differences between sectors in antenatal and intrapartum care and associated outcomes are well documented but few studies have investigated differences in postpartum care following hospital discharge and their impact on maternal satisfaction and confidence.

Methods

Women who birthed in Queensland, Australia from February to May 2010 were mailed a self-report survey 4 months postpartum. Regression analysis was used to determine associations between sector of birth and postpartum care, and whether postpartum care experiences explained sector differences in postpartum well-being (satisfaction, parenting confidence and feeling depressed).

Results

Women who birthed in the public sector had higher odds of health professional contact in the first 10 days post-discharge and satisfaction with the amount of postpartum care. After adjusting for demographic and postpartum contact variables, sector of birth no longer had an impact on satisfaction (AOR 0.95, 99% CI 0.78-1.31), but any form of health professional contact did. Women who had a care provider’s 24 hour contact details had higher odds of being satisfied (AOR 3.64, 95% CI 3.00-4.42) and confident (AOR 1.34, 95% CI 1.08- 1.65).

Conclusion

Women who birthed in the public sector appeared more satisfied because they had higher odds of receiving contact from a health professional within 10 days post-discharge. All women should have an opportunity to speak to and/or see a doctor, midwife or nurse in the first 10 days at home, and the details of a person they can contact 24 hours a day.

Rates of obstetric intervention and associated perinatal mortality and morbidity among low-risk women giving birth in private and public hospitals in NSW (2000-2008): a linked data population-based cohort study

OBJECTIVES

To examine the rates of obstetric intervention and associated perinatal mortality and morbidity in the first 28 days among low-risk women giving birth in private and public hospitals in NSW (2000-2008).

DESIGN

Linked data population-based retrospective cohort study involving five data sets.

SETTING

New South Wales, Australia.

PARTICIPANTS

691 738 women giving birth to a singleton baby during the period 2000-2008.

MAIN OUTCOME MEASURES

Rates of neonatal resuscitation, perinatal mortality, neonatal admission following birth and readmission to hospital in the first 28 days of life in public and private obstetric units.

RESULTS

Rates of obstetric intervention among low-risk women were higher in private hospitals, with primiparous women 20% less likely to have a normal vaginal birth compared to the public sector. Neonates born in private hospitals were more likely to be less than 40 weeks; more likely to have some form of resuscitation; less likely to have an Apgar <7 at 5 min. Neonates born in private hospitals to low-risk mothers were more likely to have a morbidity attached to the birth admission and to be readmitted to hospital in the first 28 days for birth trauma (5% vs 3.6%); hypoxia (1.7% vs 1.2%); jaundice (4.8% vs 3%); feeding difficulties (4% vs 2.4%) ; sleep/behavioural issues (0.2% vs 0.1%); respiratory conditions (1.2% vs 0.8%) and circumcision (5.6 vs 0.3%) but they were less likely to be admitted for prophylactic antibiotics (0.2% vs 0.6%) and for socioeconomic circumstances (0.1% vs 0.7%). Rates of perinatal mortality were not statistically different between the two groups.

CONCLUSIONS

For low-risk women, care in a private hospital, which includes higher rates of intervention, appears to be associated with higher rates of morbidity seen in the neonate and no evidence of a reduction in perinatal mortality.

Trends in obstetric anal sphincter injuries and associated risk factors for vaginal singleton term births in New South Wales 2001-2009

BACKGROUND

Changes in clinical practice and in the characteristics of childbearing women have the potential to influence the rate of obstetric anal sphincter injuries (OASIS). To date, little investigation has been undertaken to assess the effect of risk factor trends for the Australian population on OASIS rates.

AIMS

To ascertain the OASIS rates amongst singleton vaginal births ≥37 weeks gestation in NSW, 2001 - 2009; to determine risk factor effect sizes and trends; and to compare predicted with observed OASIS rates.

METHODS

Using two linked population-based data sets, risk factors for OASIS were determined by logistic regression. Contingency tables and predictive modelling were used to determine trends and predicted rates of OASIS, respectively.

RESULTS

The OASIS rate increased from 2.2% in 2001 to 2.9% in 2009. Highest risks were for forceps deliveries without episiotomy (primiparas aOR 6.10, multiparas aOR 6.15), followed by multiparas with no previous vaginal birth (aOR 5.61). High birthweight, vacuum delivery and Asian country of birth posed risks for all women. The greatest risk factor trends were increases in Asian country of birth and vacuum delivery, while the greatest trend amongst protective factors was an increase in maternal age ≥35 years for primiparas. Predicted OASIS rates were lower than observed rates.

CONCLUSION

In an environment of changing demographic and clinical risk factors, the OASIS rate has increased. This increase is only minimally explained by the identified risk factors and may be related to other unmeasured risk factors or a possible increase in clinical ascertainment and/or documentation of OASIS.

Dialysis in public and private hospitals in Queensland

BACKGROUND

Clinical outcomes for patients treated in public and private hospitals may be different.

AIM

The aim of the study was to compare the characteristics and outcomes of patients receiving dialysis at public and private hospitals in Queensland.

METHODS

Incident adult dialysis patients in Queensland registered with the Australia and New Zealand Dialysis and Transplant Registry between 1999 and 2009 were classified by dialysis modality at either a public or private hospital. Outcomes were dialysis patient characteristics and survival.

RESULTS

Three thousand, three hundred and ten patients commenced dialysis in public hospitals, 1939 haemodialysis (HD) and 1371 peritoneal dialysis (PD). Seven hundred and ninety-three patients commenced dialysis in private hospitals, 757 HD and 36 PD. Compared with public HD, private HD patients were older, had more coronary artery disease and less diabetes, and were more likely to live in an urban area. Public HD patients were more likely to be obese and referred late to a nephrologist. Nearly all indigenous patients were managed in public hospitals. Private patients were more likely to have an arteriovenous fistula or graft at first HD (P < 0.001) but not after excluding late referrals (P = 0.09). Public hospitals provided longer HD sessions and more HD hours per week for all age groups except 75+ years. Compared with public hospital HD, patient survival adjusted for multiple variables was comparable for private hospital HD (hazard ratio 1.20 (95% confidence interval 0.98-1.46, P = 0.07)) but worse for public PD (hazard ratio 1.14 (95% confidence interval 1.05-1.24, P = 0.002)).

CONCLUSION

Private HD patients are older and less likely to be diabetic than public patients. Patient survival is worse for public PD than public HD.

Rates of obstetric intervention during birth and selected maternal and perinatal outcomes for low risk women born in Australia compared to those born overseas

BACKGROUND

There are mixed reports in the literature about obstetric intervention and maternal and neonatal outcomes for migrant women born in resource rich countries. The aim of this study was to compare the risk profile, rates of obstetric intervention and selected maternal and perinatal outcomes for low risk women born in Australia compared to those born overseas.

METHOD

A population-based descriptive study was undertaken in NSW of all singleton births recorded in the NSW Midwives Data Collection between 2000-2008 (n=691,738). Risk profile, obstetric intervention rates and selected maternal and perinatal outcomes were examined.

RESULTS

Women born in Australia were slightly younger (30 vs 31 years), less likely to be primiparous (41% vs 43%), three times more likely to smoke (18% vs 6%) and more likely to give birth in a private hospital (26% vs 18%) compared to women not born in Australia. Among the seven most common migrant groups to Australia, women born in Lebanon were the youngest, least likely to be primiparous and least likely to give birth in a private hospital. Hypertension was lowest amongst Vietnamese women (3%) and gestational diabetes highest amongst women born in China (14%). The highest caesarean section (31%), instrumental birth rates (16%) and episiotomy rates (32%) were seen in Indian women, along with the highest rates of babies <10th centile (22%) and <3rd centile (8%). Lebanese women had the highest rates of stillbirth (7.2/1000). Similar trends were found in the different migrant groups when only low risk women were included.

CONCLUSION

The results suggest there are significant differences in risk profiles, obstetric intervention rates and maternal and neonatal outcomes between Australian-born and women born overseas and these differences are seen overall and in low risk populations. The finding that Indian women (the leading migrant group to Australia) have the lowest normal birth rate and high rates of low birth weight babies is concerning, and attention needs to be focused on why there are disparities in outcomes and on effective models of care that might improve outcomes for this population.

Risk of recurrence, subsequent mode of birth and morbidity for women who experienced severe perineal trauma in a first birth in New South Wales between 2000-2008: a population based data linkage study

BACKGROUND

Severe perineal trauma occurs in 0.5-10% of vaginal births and can result in significant morbidity including pain, dyspareunia and faecal incontinence. The aim of this study is to determine the risk of recurrence, subsequent mode of birth and morbidity for women who experienced severe perineal trauma during their first birth in New South Wales (NSW) between 2000 - 2008.

METHOD

All singleton births recorded in the NSW Midwives Data Collection between 2000-2008 (n=510,006) linked to Admitted Patient Data were analysed. Determination of morbidity was based upon readmission to hospital within a 12 month time period following birth for a surgical procedure falling within four categories: 1. Vaginal repair, 2. Fistula repair, 3. Faecal and urinary incontinence repair, and 4. Rectal/anal repair. Women who experienced severe perineal trauma during their first birth were compared to women who did not.

RESULTS

2,784 (1.6%) primiparous women experienced severe perineal trauma during this period. Primiparous women experiencing severe perineal trauma were less likely to have a subsequent birth (56% vs 53%) compared to those not who did not (OR 0.9; CI 0.81-0.99), however there was no difference in the subsequent rate of elective caesarean section (OR 1.2; 0.95-1.54), vaginal birth (including instrumental birth) (OR 1.0; CI 0.81-1.17) or normal vaginal birth (excluding instrumental birth) (OR 1.0; CI 0.85-1.17). Women were no more likely to have a severe perineal tear in the second birth if they experienced this in the first (OR 0.9; CI 0.67-1.34). Women who had a severe perineal tear in their first birth were significantly more likely to have an 'associated surgical procedure' within the ≤12 months following birth (vaginal repair following primary repair, rectal/anal repair following primary repair, fistula repair and urinary/faecal incontinence repair) (OR 7.6; CI 6.21-9.22). Women who gave birth in a private hospital compared to a public hospital were more likely to have an 'associated surgical procedure' in the 12 months following the birth (OR 1.8; CI 1.54-1.97), regardless of parity, birth type and perineal status.

CONCLUSION

Primiparous women who experience severe perineal trauma are less likely to have a subsequent baby, more likely to have a related surgical procedure in the 12 months following the birth and no more likely to have an operative birth or another severe perineal tear in a subsequent birth. Women giving birth in a private hospital are more likely to have an associated surgical procedure in the 12 months following birth.

Neonatal outcomes after preterm birth by mothers' health insurance status at birth: a retrospective cohort study

Background

Publicly insured women usually have a different demographic background to privately insured women, which is related to poor neonatal outcomes after birth. Given the difference in nature and risk of preterm versus term births, it would be important to compare adverse neonatal outcomes after preterm birth between these groups of women after eliminating the demographic differences between the groups.

Methods

The study population included 3085 publicly insured and 3380 privately insured, singleton, preterm deliveries (32–36 weeks gestation) from Western Australia during 1998–2008. From the study population, 1016 publicly insured women were matched with 1016 privately insured women according to the propensity score of maternal demographic characteristics and pre-existing medical conditions. Neonatal outcomes were compared in the propensity score matched cohorts using conditional log-binomial regression, adjusted for antenatal risk factors. Outcomes included Apgar scores less than 7 at five minutes after birth, time until establishment of unassisted breathing (>1 minute), neonatal resuscitation (endotracheal intubation or external cardiac massage) and admission to a neonatal special care unit.

Results

Compared with infants of privately insured women, infants of publicly insured women were more likely to receive a low Apgar score (ARR = 2.63, 95% CI = 1.06-6.52) and take longer to establish unassisted breathing (ARR = 1.61, 95% CI = 1.25-2.07), yet, they were less likely to be admitted to a special care unit (ARR = 0.84, 95% CI = 0.80-0.87). No significant differences were evident in neonatal resuscitation between the groups (ARR = 1.20, 95% CI = 0.54-2.67).

Conclusions

The underlying reasons for the lower rate of special care admissions in infants of publicly insured women compared with privately insured women despite the higher rate of low Apgar scores is yet to be determined. Future research is warranted in order to clarify the meaning of our findings for future obstetric care and whether more equitable use of paediatric services should be recommended.

Environments For Healthy Living (EFHL) Griffith birth cohort study: characteristics of sample and profile of antenatal exposures

BACKGROUND

The Environments for Healthy Living (EFHL) study is a repeated sample, longitudinal birth cohort in South East Queensland, Australia. We describe the sample characteristics and profile of maternal, household, and antenatal exposures. Variation and data stability over recruitment years were examined.

METHODS

Four months each year from 2006, pregnant women were recruited to EFHL at routine antenatal visits on or after 24 weeks gestation, from three public maternity hospitals. Participating mothers completed a baseline questionnaire on individual, familial, social and community exposure factors. Perinatal data were extracted from hospital birth records. Descriptive statistics and measures of association were calculated comparing the EFHL birth sample with regional and national reference populations. Data stability of antenatal exposure factors was assessed across five recruitment years (2006-2010 inclusive) using the Gamma statistic for ordinal data and chi-squared for nominal data.

RESULTS

Across five recruitment years 2,879 pregnant women were recruited which resulted in 2904 live births with 29 sets of twins. EFHL has a lower representation of early gestational babies, fewer still births and a lower percentage of low birth weight babies, when compared to regional data. The majority of women (65%) took a multivitamin supplement during pregnancy, 47% consumed alcohol, and 26% reported having smoked cigarettes. There were no differences in rates of a range of antenatal exposures across five years of recruitment, with the exception of increasing maternal pre-pregnancy weight (p=0.0349), decreasing rates of high maternal distress (p=0.0191) and decreasing alcohol consumption (p<0.0001).

CONCLUSIONS

The study sample is broadly representative of births in the region and almost all factors showed data stability over time. This study, with repeated sampling of birth cohorts over multiple years, has the potential to make important contributions to population health through evaluating longitudinal follow-up and within cohort temporal effects.

Obstetric interventions for low-risk pregnant women in France: do maternity unit characteristics make a difference?

BACKGROUND

In many countries the closure of small maternity units has raised concerns about how the concentration of low-risk pregnancies in large specialized units might affect the management of childbirth. We aimed to assess the role of maternity unit characteristics on obstetric intervention rates among low-risk women in France.

METHODS

Data on low-risk deliveries came from the 2010 French National Perinatal Survey of a representative sample of births (n = 9,530). The maternity unit characteristics studied were size, level of care, and private or public status; the interventions included induction of labor; cesarean section; operative vaginal delivery (forceps, spatulas or vacuum); and episiotomy. Multilevel logistic regression analyses were adjusted for maternal confounding factors, gestational age, and infant birthweight.

RESULTS

The rates of induction, cesarean section, operative delivery, and episiotomy in this low-risk population were 23.9 percent, 10.1 percent, 15.2 percent, and 19.6 percent, respectively, and 52.0 percent of deliveries included at least one of them. Unit size was unrelated to any intervention except operative delivery (adjusted odds ratio [aOR] = 1.47 (95% CI, 1.10-1.96) for units with >3,000 deliveries per year vs units with <1,000). The rate of every intervention was higher in private units, and the aOR for any intervention was 1.82 (95% CI, 1.59-2.08). After adjustment for maternal characteristics and facility size and status, significant variations in the use of interventions remained between units, especially for episiotomies. Results for level of care were similar to those for unit size.

CONCLUSIONS

The concentration of births in large maternity units in France is not associated with higher rates of interventions for low-risk births. The situation in private units could be explained by differences in the organization of care. Additional research should explore the differences in practices between maternity units with similar characteristics.

Hidden costs associated with the universal application of risk management in maternity care

This paper presents a critical analysis of risk management in maternity care and the hidden costs associated with the practice in healthy women. Issues of quality and safety are driving an increased emphasis by health services on risk management in maternity care. Medical risk in pregnancy is known to benefit 15% or less of all pregnancies. Risk management applied to the remaining 85% of healthy women results in the management of risk in the absence of risk. The health cost to mothers and babies and the economic burden on the overall health system of serious morbidity has been omitted from calculations comparing costs of uncomplicated caesarean birth and uncomplicated vaginal birth. The understanding that elective caesarean birth is cost-neutral when compared to a normal vaginal birth has misled practitioners and contributed to over use of the practice. For the purpose of informing the direction of maternity service policy it is necessary to expose the effect the overuse of medical intervention has on the overall capacity of the healthcare system to absorb the increasing demand for operating theatre resources in the absence of clinical need.

Adverse outcomes of labour in public and private hospitals in Australia: a population-based descriptive study

OBJECTIVE

To compare the rate of serious adverse perinatal outcomes of term labour between private and public maternity hospitals in Australia.

DESIGN, SETTING AND PARTICIPANTS

A population-based study of 789 240 term singleton births in public and private hospitals in 2001-2004, using data from the National Perinatal Data Collection.

MAIN OUTCOME MEASURES

Third- and fourth-degree perineal injury, requirement for high level of neonatal resuscitation, Apgar score < 7 at 5 minutes, admission to neonatal intensive care unit or special care nursery, and perinatal death.

RESULTS

31.4% of the term singleton births occurred in private hospitals. After adjusting for maternal age, Indigenous status, parity, smoking status, diabetes, hypertension, remoteness of usual residence, and method of birth, the rates of all adverse outcomes studied were higher for public hospital births. For women, the adjusted odds ratio (AOR) for third- or fourth-degree perineal injury was 2.28 (95% CI, 2.16-2.40). For babies, the odds of a high level of resuscitation (AOR, 2.37; 95% CI, 2.17-2.59), low Apgar score (AOR, 1.75; 95% CI, 1.65-1.84), intensive care requirement (AOR, 1.48; 95% CI, 1.45-1.51) and perinatal death (AOR, 2.02; 95% CI, 1.78-2.29) were all higher in public hospitals.

CONCLUSION

For women delivering a single baby at term in Australia, the prevalence of adverse perinatal outcomes is higher in public hospitals than in private hospitals.

Private obstetric intervention: good, bad or whatever?

Challenging the assumption that higher rates of intervention provide no benefits for babies.