Predictors of emergency cesarean delivery among international migrant women in Canada

Do the Antenatal Care and Perinatal Outcomes of Women with a Vietnamese Migration Background Differ from Those of Other Women?: A Retrospective Analysis

Introduction

In Germany, 0.25% of the total population are persons with a Vietnamese migration background. There are almost no studies on this particular group of immigrants. We compared the perinatal data of women with a Vietnamese migration background with the pregnancy outcomes of non-Vietnamese women also living in Germany.

Methods

After using name analysis to allocate women into different groups, the perinatal data of women with a Vietnamese migration background who gave birth between 1.1.2016 and 31.12.2019 in Campus Charité Mitte in Berlin were retrospectively evaluated. These data were compared in a 3:1 ratio with the data of women of non-Vietnamese origin and the same age and parity. Multivariate regression analysis was used to determine factors which influenced caesarean section rates, the transfer rates of neonates to the neonatal department, and the rates of higher degree perineal tears.

Results

The perinatal data of 470 women with a Vietnamese migration background, 209 (44.5%) of whom were registered as living in a refugee shelter, were compared with those of 1410 controls. An "ideal pregnancy outcome," which included giving birth after 37 + 0 weeks of gestation, a 5-minute Apgar score ≥ 8, arterial cord blood pH ≥ 7.20, no transfer of the newborn to the neonatal department, and spontaneous birth or vacuum extraction without a higher degree perineal tear, was recorded for 44.5% of women with and 38.1% of women without a Vietnamese migration background (p = 0.1), despite the lower attendance rates at antenatal screening appointments of Vietnamese women. Accommodation in a shelter for refugees was a protective factor against caesarean section (OR 0.5, 95% CI: 0.36-0.73) and transfer of the newborn to the neonatal department (OR 0.45, 95% CI: 0.23-0.89). A Vietnamese migration background was a risk factor for a third-degree perineal tear (OR 5.4, 95% CI: 1.4-21.30).

Conclusion

Despite lower levels of antenatal care, women with a Vietnamese migration background did not have poorer pregnancy outcomes.

Are rates of clinical interventions during pregnancy and childbirth different for refugees and asylum seekers in high-income countries? A scoping review

BACKGROUND

Adequate maternity care and appropriate clinical interventions during labour and delivery can reduce adverse perinatal outcomes, but unnecessary interventions may cause harm. While studies have shown that refugees and asylum seekers face important barriers when accessing maternity care, there is a lack of high-quality quantitative data on perinatal health interventions, such as induction of labour or caesarean sections, among refugees and asylum seekers and the findings reported in the literature tend to be inconsistent. Our goal was to examine and synthesise the evidence regarding the rates of intrapartum clinical interventions in women who are refugees and asylum seekers in high-income countries compared to other population groups.

METHODS

We conducted a scoping review of peer-reviewed studies published in English since 2011 that report original quantitative findings regarding intrapartum clinical interventions among refugees and asylum seekers in high-income countries compared to those in non refugee, non asylum seeker populations. We examined reported rates of clinical pain relief, labour induction and augmentation, episiotomies, instrumental deliveries, and caesarean sections.

RESULTS

Twenty-five papers were included in the review. Findings indicate that refugees and asylum seekers were less likely to receive pain relief, with 16 out of 20 data points showing unadjusted ORs ranging from 0.20 (CI: 0.10-0.60) to 0.96 (CI: 0.70-1.32). Similarly, findings indicate lower odds of instrumental delivery among refugees and asylum seekers with 14 of 21 data points showing unadjusted ORs between 0.25 (CI: 0.15-0.39) and 0.78 (CI: 0.47-1.30); the remaining papers report no statistically significant difference between groups. There was no discernable trend in rates of labour induction and episiotomies across studies.

CONCLUSIONS

The studies included in this review suggest that asylum seekers and refugees are less likely to receive clinical pain relief and experience instrumental delivery than non-refugee groups in high-income countries. This review strengthens our understanding of the links between immigration status and maternity care, ultimately informing policy and practice to improve perinatal health and the provision of care for all.

Perinatal outcomes among Indian-born mothers in Australia

OBJECTIVE

To examine the incidence of adverse perinatal outcomes and the risk of adverse perinatal outcomes for Indian-born mothers compared to other mothers living and giving birth in Australia.

DESIGN, SETTING AND PARTICIPANTS

This retrospective cohort study was designed to investigate all births in Australia in 2012 and those in the Monash Health Birthing Outcomes System (BOS) 2014 to Indian-born mothers in Australia. Data sets were analysed involving descriptive statistics using Statistical Package for Social Sciences (SPSS vs. 23).

RESULTS

Indian-born mothers in Australia are at increased risk of induced labour, emergency caesarean section, very preterm birth (20-27 weeks), babies with low to very low birth weight, and low Apgar score (0-2) at 5 min, gestational diabetes, hypothyroidism, iron deficiency anaemia and vitamin B12 deficiencies compared to other mothers giving birth in Australia. This is despite a range of protective factors (25-34 years, married, nonsmokers, and a BMI < 30) that would normally be expected to reduce the risk of adverse perinatal outcomes for mothers giving birth in a developed country.

CONCLUSION

In the absence of many of the recognized maternal risk factors, Indian-born mothers continue to face increased risk of adverse perinatal outcomes, despite access to high quality maternity care in Australia. Recommendations arising from this study include the need for an intervention study to identify maternal risk factors for Indian-born mothers in mid to late pregnancy that contribute to the risk for very preterm birth and low birth weight.

[Relevance of the transcultural approach to improve the care relationship in the perinatal period]

The international literature review highlights higher neonatal morbimortality in migrant patients and their babies. The explanatory hypotheses include late pregnancy follow-up with difficulty accessing care, language barriers, and different cultural representation in pregnancy support. On the one hand, we propose to explain the cultural factors that can impact the caring relationship during the perinatal period. On the other hand, we set out tools for anthropological and psychological understanding to enhance the sharing of cultural representations around pregnancy follow-up, the needs of a baby, and obstetrical or postnatal complications. The request for a specialised transcultural opinion needs to be more systematic; the transcultural posture is adaptable to each care professional. This requires the professional to address explicitly the impact of culture in care and consider their own cultural distance. Specialised advice is recommended in certain situations of cumulative vulnerability (complex trauma, perinatal depression with cultural coding of symptoms), blockage or refusal of care for cultural reasons and to avoid cultural misunderstandings. We detail two modalities: mediation and a discussion group around cultural issues set up in the maternity ward. The institutional work we propose within the multidisciplinary team in the maternity ward also allows the acquisition of transcultural competencies.

Health outcomes, health services utilization, and costs consequences of medicare uninsurance among migrants in Canada: a systematic review

BACKGROUND

Medically uninsured groups, many of them migrants, reportedly delay using healthcare services due to costs and often face preventable health consequences. This systematic review sought to assess quantitative evidence on health outcomes, health services use, and health care costs among uninsured migrant populations in Canada.

METHODS

OVID MEDLINE, Embase, Global Health, EconLit, and grey literature were searched to identify relevant literature published up until March 2021. The Cochrane Risk of Bias in Non-randomized Studies - of Interventions (ROBINS-I) tool was used to assess the quality of studies.

RESULTS

Ten studies were included. Data showed that there are differences among insured and uninsured groups in reported health outcomes and health services use. No quantitative studies on economic costs were captured.

CONCLUSIONS

Our findings indicate a need to review policies regarding accessible and affordable health care for migrants. Increasing funding to community health centers may improve service utilization and health outcomes among this population.

Prediction of odds for emergency cesarean section: A secondary analysis of the CHILD term birth cohort study

INTRODUCTION

Previously developed cesarean section (CS) and emergency CS prediction tools use antenatal and intrapartum risk factors. We aimed to develop a predictive model for the risk of emergency CS before the onset of labour utilizing antenatal obstetric and non-obstetric factors.

METHODS

We completed a secondary analysis of data collected from the CHILD Cohort Study. The analysis was limited to term (≥37 weeks), singleton pregnant women with cephalic presentation. The sample was divided into a training and validation dataset. The emergency CS prediction model was developed in the training dataset and the performance accuracy was assessed by the area under the receiver operating characteristic curve(AUC) of the receiver operating characteristic analysis (ROC). Our final model was subsequently evaluated in the validation dataset.

RESULTS

The participant sample consisted of 2,836 pregnant women. Mean age of participants was 32 years, mean BMI of 25.4 kg/m2 and 39% were nulliparous. 14% had emergency CS delivery. Each year of increasing maternal age increased the odds of emergency CS by 6% (adjusted Odds Ratio (aOR 1.06,1.02-1.08). Likewise, there was a 4% increase odds of emergency CS for each unit increase in BMI (aOR 1.04,1.02-1.06). In contrast, increase in maternal height has a negative association with emergency CS. The final emergency CS delivery predictive model included six variables (hypertensive disorders of pregnancy, antenatal depression, previous vaginal delivery, age, height, BMI). The AUC for our final prediction model was 0.74 (0.72-0.77) in the training set with a similar AUC in the validation dataset (0.77; 0.71-0.82).

CONCLUSION

The developed and validated emergency CS delivery prediction model can be used in counselling prospective parents around their CS risk and healthcare resource planning. Further validation of the tool is suggested.

Cesarean Deliveries Among Immigrant and Canadian-Born Women in a Representative Community Population in Canada: A Retrospective Cohort Study

OBJECTIVE

To examine differences in the rate of cesarean delivery between Canadian-born women and immigrants to Canada and by duration of time in Canada and rate of cesarean delivery in their country-of-origin.

METHODS

We used linked data from hospitalization records and the Canadian Community Health Survey for all deliveries after 20 weeks gestation between 2002 and 2017 in Canada (excluding Québec). Odds of cesarean delivery in recent immigrants (<5 y in Canada) and non-recent immigrants (≥5 y in Canada) were compared with those of Canadian-born women using multivariable logistic regression. Immigrants were further categorized using the cesarean delivery rate in their country-of-origin as low (<10%), medium (≥10 to <35%), or high (≥35%).

RESULTS

Of the 53 505 women included, 89% were Canadian-born, 4% were recent immigrants and 7% were non-recent immigrants. Overall, 28.6% of women had a cesarean delivery. After adjusting for medical and socio-economic factors, the odds of cesarean delivery among recent immigrants (OR 1.12; 95% CI 0.95-1.34) and non-recent immigrants (OR 1.11; 95% CI 0.98-1.25) did not differ statistically from those of Canadian-born women. Recent immigrants from countries with lower caesarean delivery rates had higher odds of cesarean delivery (OR 1.34; 95% CI 1.05-1.70), whereas the odds of caesarean for recent immigrants from medium- and high-rate countries did not differ from those of Canadian-born women.

CONCLUSION

After accounting for demographic and medical factors, few differences remained in cesarean delivery rates between immigrants and Canadian-born women. Country-of-origin practices are unlikely to reflect preferences for cesarean delivery in immigrant women in Canada.

Caesarean delivery in a migration context: the role of prior delivery in the host country

Migrant women in industrialised countries experience high caesarean section (CS) rates but little is known about the effect of a previous delivery in the host country. This study set out to investigate this effect among migrant women in France, using data from the DSAFHIR study on healthcare access of migrant women living in emergency housing hotels, collected in the Paris Metropolitan area in 2017. Respondents reported life-long history of deliveries. We focused on deliveries occurring in France in 2000–2017: 370 deliveries reported by 242 respondents. We conducted chi-square tests and multivariate logistic regressions, adjusting for the clustering of deliveries among respondents by computing standard errors allowing for intragroup correlation. Mode of delivery was associated with duration of residence among multiparous women with no prior CS, with a higher CS rate with shorter duration of residence (16% vs. 7%, p = 0.04). In this group, a previous delivery in France was associated with a lower CS rate (5% vs. 16%, p = 0.008). In multivariate analysis, compared with women with previous birth in France, women giving birth in France for the first time had a higher risk of CS, regardless of duration of residence (aOR = 4.0, 95% CI = 1.3–12.1 for respondents with short duration of residence, aOR = 4.7, 95% CI = 1.2–18.0 for respondents with longer duration of residence). Efforts directed at decreasing the CS rate among migrant women should target women giving birth in the host country for the first time.

Association between Maternal Origin, Pre-Pregnancy Body Mass Index and Caesarean Section: A Nation-Wide Registry Study

Aims: To explore the association between maternal origin and birthplace, and caesarean section (CS) by pre-pregnancy body mass index (BMI) and length of residence. Methods: We linked records from 118,459 primiparous women in the Medical Birth Registry of Norway between 2013 and 2017 with data from the National Population Register. We categorized pre-pregnancy BMI (kg/m²) into underweight (<18.5), normal weight (18.5–24.9) and overweight/obese (≥25). Multinomial regression analysis estimated crude and adjusted relative risk ratios (RRR) with 95% confidence intervals (CI) for emergency and elective CS. Results: Compared to normal weight women from Norway, women from Sub-Saharan Africa and Southeast Asia/Pacific had a decreased risk of elective CS (aRRR = 0.57, 95% CI 0.37–0.87 and aRRR = 0.56, 0.41–0.77, respectively). Overweight/obese women from Europe/Central Asia had the highest risk of elective CS (aRRR = 1.42, 1.09–1.86). Both normal weight and overweight/obese Sub-Saharan African women had the highest risks of emergency CS (aRRR = 2.61, 2.28-2.99; 2.18, 1.81-2.63, respectively). Compared to women from high-income countries, the risk of elective CS was increasing with a longer length of residence among European/Central Asian women. Newly arrived migrants from Sub-Saharan Africa had the highest risk of emergency CS. Conclusion: Women from Sub-Saharan Africa had more than two times the risk of emergency CS compared to women originating from Norway, regardless of pre-pregnancy BMI.

Cross Cultural Workers for women and families from migrant and refugee backgrounds: a mixed-methods study of service providers perceptions

Background

Women from migrant and refugee backgrounds who live in high-income countries are at increased risk of adverse perinatal outcomes, including mental health issues, preterm birth and maternal and infant mortality. There is a need to implement and evaluate models of care to meet their specific needs in order to improve health outcomes, their experiences of care, and overcome barriers to access. In Sydney, Australia, a unique model of care was implemented to support women and families from migrant and refugee backgrounds to access health and community-based services through the continuum of pregnancy to the early parenting period. This model of care is known as the Cross Cultural Workers (CCWs) in Maternity and Child and Family Health Service (the CCW Service). The aim of this study was to explore the perceptions of service providers regarding the CCW Service and identify recommendations for improvement.

Methods

A mixed-methods study was conducted consisting of surveys and face to face semi-structured interviews. Service providers were recruited from hospital-based maternity and community-based services. Survey data were analysed descriptively. Interviews were analysed using qualitative content analysis.

Results

Sixty-nine service providers completed surveys and 19 were interviewed. The CCW Service was highly regarded by service providers who perceived it to be critical in improving care for women from migrant and refugee backgrounds. The overarching theme from the interviews was the ability of the CCW Service to act as a ‘bridge to health’ through the provision of culturally responsive care. There were three main categories; supporting access to health and community-based services, improving the healthcare experience, and organisational factors, including part-time hours, capacity, heavy workloads and confusion/lack of clarity regarding the CCW role, which affected CCWs’ capacity to optimally support service providers in providing culturally responsive care. These limitations meant CCWs were not able to meet demand, and fully operationalise the model.

Conclusion

Service providers perceived the CCW model to be a culturally responsive model of care tailored to the needs of women and families from migrant and refugee backgrounds, that reduces barriers to access, and has the potential to improve perinatal outcomes, and women's experience and satisfaction with care.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12905-021-01368-4.

Responding to the health needs of women from migrant and refugee backgrounds-Models of maternity and postpartum care in high-income countries: A systematic scoping review

Pregnant women from migrant and refugee backgrounds living in high-income countries (HIC) are at increased risk of adverse perinatal outcomes compared with women born in the host country. Women from migrant and refugee background have perinatal healthcare needs that are recognised internationally as a public health priority. The aim of this study was to identify, appraise and synthesise available evidence on the effectiveness of models of care in pregnancy or first 12 months postpartum for women from migrant and refugee backgrounds living in HIC. Care models were mapped in terms of (a) effectiveness at improving service access, (b) effectiveness at improving maternal and infant health outcomes, (c) acceptability and appropriateness from the perspective of women and (d) acceptability and appropriateness from the perspective of service providers. Using systematic scoping review methodology, qualitative, quantitative, and mixed methods research published in English 2008-2019 were included. The databases MEDLINE, Embase, Emcare, PubMed, Scopus, CINAHL, PsycINFO, Web of Science, Google Scholar, Cochrane Database of Systematic Reviews and Joanna Briggs Institute were searched between 27 February 2019 and updated 27 December 2019. Qualitative and quantitative data were analysed narratively. Seventeen studies, involving 1,499 women and 203 service providers, were included. A diverse range of interventions were identified, including bilingual/bicultural workers, group antenatal care and specialised clinics. All identified interventions were acceptable to women, and improved access, however, few provided evidence of improved perinatal outcomes. Gaps identified for future research include the use of qualitative and quantitative approaches to ascertain the experiences of women, their families, service providers and impact on perinatal outcomes. Synthesis of the included studies indicates the key elements of acceptable and accessible models, which were as follows: culturally responsive care, continuity of care, effective communication, psychosocial and practical support, support to navigate systems, flexible and accessible services.

Antenatal and perinatal outcomes of refugees in high income countries

OBJECTIVES

The World Health Organisation (WHO) has highlighted a marked trend for worse pregnancy-related indicators in migrants, such as maternal and neonatal morbidity and mortality, poor mental health and suboptimal care. The aim of this study was to determine whether such adverse outcomes occurred in refugees who moved to high income countries by comparing their antenatal and perinatal outcomes to those of non-immigrant women.

METHODS

A literature search was undertaken. Embase and Medline databases were searched using Ovid. Search terms included "refugee", "pregnan*" or "neonat*", and "outcome".

RESULTS

The search yielded 194 papers, 23 were included in the final analysis. All the papers included were either retrospective cohort or cross-sectional studies. The refugees studied originated from a wide variety of source countries, including Eritrea, Somalia, Afghanistan, Iraq, and Syria. Refugee women were more likely to be socially disadvantaged, but less likely to smoke or take illegal drugs during pregnancy. Refugee women were more likely to have poor, late, or no attendance at antenatal care. Miscarriages and stillbirth were more common amongst refugee women than non-refugees. Perinatal mortality was higher among refugees.

CONCLUSIONS

Despite better health care services in high income countries, refugee mothers still had worse outcomes. This may be explained by their late or lack of attendance to antenatal care.

Socioeconomic and migration status as predictors of emergency caesarean section: a birth cohort study

BACKGROUND

Women with a migration background are reportedly at a higher risk of emergency caesarean section. There is evidence that this is due in part to suboptimal antenatal care use and quality of care. Despite the fact that migrant women and descendants of migrants are often at risk of socioeconomic disadvantage, there is, in comparison, scarce and incomplete evidence on the role of socioeconomic position as an independent risk factor for emergency caesarean delivery. We therefore investigate whether and how migration background and two markers of socioeconomic position affect the risk of an emergency caesarean section and whether they interact with each other.

METHODS

In 2013-2016, we recruited women during the perinatal period in Bielefeld, Germany, collecting data on health and socioeconomic and migration background, as well as routine perinatal data. We studied associations between migration background (1st generation migrant, 2nd/3rd generation woman, no migration background), socioeconomic status (educational attainment and net monthly household income), and the outcome emergency caesarean section.

RESULTS

Of the 881 participants, 21% (n = 185) had an emergency caesarean section. Analyses showed no association between having an emergency caesarean section and migration status or education. Women in the lowest (< 800€/month) and second lowest (between 800 and 1750€/month) income categories were more likely (aOR: 1.96, CI: 1.01-3.81; and aOR: 2.36, CI: 1.27-4.40, respectively) to undergo an emergency caesarean section than women in the higher income groups.

CONCLUSIONS

Migration status and education did not explain heterogeneity in mode of birth. Having a low household income, however, increased the chances of emergency caesarean section and thereby contributed towards producing health disadvantages. Awareness of these findings and measures to correct these inequalities could help to improve the quality of obstetric care.

Differential rates of cesarean delivery by maternal geographical origin: a cohort study in France

BACKGROUND

In many Western countries, higher rates of cesarean have been described among migrant women compared to natives of receiving countries. We aimed to estimate this difference comparing women originating from France and Sub-Saharan Africa (SSA), identify the clinical situations explaining most of this difference and assess whether maternal origin was independently associated with cesarean risk.

METHODS

The PreCARE prospective multicenter cohort study was conducted in 2010-2012 in the north Paris area. Our sample was restricted to 1500 women originating from Sub-Saharan Africa and 2206 from France. Profiles of cesarean section by maternal origin were described by the Robson classification. Independent associations between maternal origin and 1) cesarean before labor versus trial of labor, then 2) intrapartum cesarean versus vaginal delivery were assessed by logistic regression models to adjust for other maternal and pregnancy characteristics.

RESULTS

Rates of cesarean for women originating from France and SSA were 17 and 31%. The Robson 5A category "unique uterine scar, single cephalic ≥37 weeks" was the main contributor to this difference. Within this category, SSA origin was associated with cesarean before labor after adjustment for medical risk factors (adjusted odds ratio [aOR] = 2.30 [1.12-4.71]) but no more significant when adjusting on social deprivation (aOR = 1.45 [0.63-3.31]). SSA origin was associated with cesarean during labor after adjustment for both medical and social factors (aOR = 2.95 [1.35-6.44]).

CONCLUSIONS

The wide difference in cesarean rates between SSA and French native women is mainly explained by the Robson 5A category. Within this group, medical factors alone do not explain the increased risk of cesarean in SSA women.

Neighborhood Income and Cesarean Section Rates at a Tertiary Care Center in Canada

Background: With rising rates of cesarean sections (CSs) in Canada and worldwide, nonclinical factors for CS warrant consideration. Objective: To determine the association between a primigravid woman's neighborhood income and rates of CSs. Materials and Methods: A retrospective cohort study was conducted at an Ontario tertiary care center from January 2003 to December 2013. Rates of CSs were determined using data collected from the Discharge Abstract Database. Women with singleton live births were included. The main exposure variable was the neighborhood income quintile. A multivariable model was used to adjust for covariates and provide an estimate of the independent effect of neighborhood income on the CS rate. Results: The study cohort comprised 32,714 women. Compared with the lowest quintile, women in the highest quintile had increased rates of CSs (relative risk, RR 1.06, 95% confidence interval, CI [1.02-1.11]). Following adjustment for important confounders, there was no longer an association between the neighborhood income and CS rate (adjusted RR 1.00, 95% CI [0.99-1.01]). Women in the highest quintile were more likely to have greater maternal age (p < 0.01). Conclusions: Although differences in CS rates are seen by the neighborhood income quintile, they appear to be mediated through a combination of maternal age and other clinical factors. Neighborhood income does not appear to be an independent predictor of CS.

Perinatal health outcomes and care among asylum seekers and refugees: a systematic review of systematic reviews

BACKGROUND

Global migration is at an all-time high with implications for perinatal health. Migrant women, especially asylum seekers and refugees, represent a particularly vulnerable group. Understanding the impact on the perinatal health of women and offspring is an important prerequisite to improving care and outcomes. The aim of this systematic review was to summarise the current evidence base on perinatal health outcomes and care among women with asylum seeker or refugee status.

METHODS

Twelve electronic database, reference list and citation searches (1 January 2007-July 2017) were carried out between June and July 2017. Quantitative and qualitative systematic reviews, published in the English language, were included if they reported perinatal health outcomes or care and clearly stated that they included asylum seekers or refugees. Screening for eligibility, data extraction, quality appraisal and evidence synthesis were carried out in duplicate. The results were summarised narratively.

RESULTS

Among 3415 records screened, 29 systematic reviews met the inclusion criteria. Only one exclusively focussed on asylum seekers; the remaining reviews grouped asylum seekers and refugees with wider migrant populations. Perinatal outcomes were predominantly worse among migrant women, particularly mental health, maternal mortality, preterm birth and congenital anomalies. Access and use of care was obstructed by structural, organisational, social, personal and cultural barriers. Migrant women's experiences of care included negative communication, discrimination, poor relationships with health professionals, cultural clashes and negative experiences of clinical intervention. Additional data for asylum seekers and refugees demonstrated complex obstetric issues, sexual assault, offspring mortality, unwanted pregnancy, poverty, social isolation and experiences of racism, prejudice and stereotyping within perinatal healthcare.

CONCLUSIONS

This review identified adverse pregnancy outcomes among asylum seeker and refugee women, representing a double burden of inequality for one of the most globally vulnerable groups of women. Improvements in the provision of perinatal healthcare could reduce inequalities in adverse outcomes and improve women's experiences of care. Strategies to overcome barriers to accessing care require immediate attention. The systematic review evidence base is limited by combining heterogeneous migrant, asylum seeker and refugee populations, inconsistent use of definitions and limited data on some perinatal outcomes and risk factors. Future research needs to overcome these limitations to improve data quality and address inequalities.

SYSTEMATIC REGISTRATION

Systematic review registration number: PROSPERO CRD42017073315 .

Pregnancy outcomes among Chinese women with and without systemic lupus erythematosus: a retrospective cohort study

OBJECTIVE

To completely and quantifiably determine the effect of systemic lupus erythematosus (SLE) on pregnancy outcomes in a Chinese cohort.

DESIGN

A retrospective cohort study.

SETTING

Data were collected at a tertiary medical centre located in Shanghai, China, from September 2011 to May 2017.

PARTICIPANTS

We assigned 338 pregnant women with SLE to the study cohort and 1014 randomly selected pregnant women without SLE (three for every woman with SLE) to a comparison cohort. The relevant medical records of all pregnant women were retrospectively reviewed. Cases of multiple pregnancy and cases in which an artificial abortion was performed for personal reasons were excluded.

PRIMARY AND SECONDARY OUTCOME MEASURES

Maternal and fetal outcomes were primary outcomes, and management of antenatal care was the secondary outcome.

RESULTS

The risks of pregnancy-induced hypertension (OR 2.68, 95% CI 1.75 to 4.09), pre-eclampsia (OR 3.13, 95% CI 1.95 to 5.03) and premature rupture of membranes (OR 2.53, 95% CI 1.46 to 4.40) were significantly different between women with and without SLE. Gestational diabetes was negatively associated with SLE in pregnant women (OR 0.49, 95% CI 0.28 to 0.85). Pregnant women with SLE displayed significantly higher rates of fetal loss (OR 10.23, 95% CI 5.08 to 20.59), including spontaneous abortion (OR 4.42, 95% CI 1.52 to 12.80), therapeutic abortion (OR 16.57, 95% CI 5.80 to 47.35) and stillbirth (OR 13.25, 95% CI 1.49 to 118.11), and a higher risk of preterm birth (OR 3.15, 95% CI 2.21 to 4.50), intrauterine growth restriction (OR 2.20, 95% CI 1.35 to 3.58), a child who was small for the gestational age (OR 1.86, 95% CI 1.11 to 3.13), a caesarean section (OR 4.73, 95% CI 3.30 to 6.80) or a neonatal intensive care unit admission (OR 3.48, 95% CI 2.21 to 5.48) than women in the non-SLE population after adjusting for confounding factors.

CONCLUSIONS

In this study, SLE significantly increased the risk of adverse pregnancy outcomes. Therefore, a preconception assessment and close antenatal monitoring by both rheumatologists and obstetricians should be performed in pregnant women with SLE.

Intrapartum intervention rates and perinatal outcomes following induction of labour compared to expectant management at term from an Australian perinatal centre

BACKGROUND

Induction of labor (IOL) is a common obstetric intervention, yet its impact on intervention rates and perinatal outcomes is conflicting.

AIMS

To evaluate the impact of IOL on intrapartum intervention rates and perinatal outcomes in women with singleton pregnancies at term.

MATERIAL AND METHODS

This was a retrospective, cross-sectional study of term singleton deliveries at the Mater Mother's Hospital in Brisbane, Australia in 2007-2013. The IOL cohort was compared to an expectantly managed group.

RESULTS

Of the final cohort (44 698 women), 64.4% had expectant management and 35.6% had IOL. Multivariate analyses showed that IOL was associated with lower odds of spontaneous vaginal delivery from ≥37 weeks gestation. The risk of emergency caesarean for non-reassuring fetal status was also higher in the IOL cohort at 40 and 41 weeks gestation. For women who were managed expectantly, the highest rate of spontaneous vaginal delivery and the lowest rate of emergency caesareans occurred at 39 weeks gestation. For women who underwent IOL, the nadir emergency caesarean rate and the highest spontaneous vaginal delivery rate was also at 39 weeks. Rates of neonatal intensive car unit admission were higher in the IOL group at 37 weeks (adjusted odds ratio (aOR) 3.11, 95% CI: 2.62-3.68) and 38 weeks (aOR 1.78, 95% CI: 1.55-2.04) and lower at >42 weeks (OR 0.35, 95% CI: 0.14-0.81) respectively.

CONCLUSION

IOL compared to expectant management is associated with lower spontaneous vaginal delivery rates and increased risk of emergency caesarean for intrapartum fetal compromise with broadly comparable perinatal outcomes.

Scoping Review on Maternal Health among Immigrant and Refugee Women in Canada: Prenatal, Intrapartum, and Postnatal Care

The last fifteen years have seen a dramatic increase in both the childbearing age and diversity of women migrating to Canada. The resulting health impact underscores the need to explore access to health services and the related maternal health outcome. This article reports on the results of a scoping review focused on migrant maternal health within the context of accessible and effective health services during pregnancy and following delivery. One hundred and twenty-six articles published between 2000 and 2016 that met our inclusion criteria and related to this group of migrant women, with pregnancy/motherhood status, who were living in Canada, were identified. This review points at complex health outcomes among immigrant and refugee women that occur within the compelling gaps in our knowledge of maternal health during all phases of maternity. Throughout the prenatal, intrapartum, and postnatal periods of maternity, barriers to accessing healthcare services were found to disadvantage immigrant and refugee women putting them at risk for challenging maternal health outcomes. Interactions between the uptake of health information and factors related to the process of immigrant settlement were identified as major barriers. Availability of appropriate services in a country that provides universal healthcare is discussed.

Predictors of Unplanned Cesareans among Low-Risk Migrant Women from Low- and Middle-Income Countries Living in Montreal, Canada

BACKGROUND

Research has yielded little understanding of factors associated with high cesarean rates among migrant women (i.e., women born abroad). The objective of this study was to identify medical, migration, social, and health service predictors of unplanned cesareans among low-risk migrant women from low- and middle-income countries (LMICs).

METHODS

We used a case-control research design. The sampling frame included migrant women from LMICs living in Canada less than 8 years, who gave birth at one of three Montreal hospitals between March 2014 and January 2015. Data were collected from medical records and by interview-administration of the Migrant-Friendly Maternity Care Questionnaire. We performed multi-variable logistic regression for low-risk women (i.e., vertex, singleton, term pregnancies) who delivered vaginally (1,615 controls) and by unplanned cesarean indicated by failure to progress, fetal distress, or cephalopelvic disproportion (233 cases).

RESULTS

Predictors of unplanned cesarean included being from sub-Saharan Africa/Caribbean (OR 2.37 [95% CI 1.02-5.51]) and admission for delivery during early labor (OR 5.43 [95% CI 3.17-9.29]). Among women living in Canada less than 2 years predictors were having a humanitarian migration classification (OR 4.24 [95% CI 1.16-15.46]) and admission for delivery during early labor (OR 7.68 [95% CI 3.12-18.88]).

CONCLUSION

Migrant women from sub-Saharan Africa/Caribbean and recently arrived migrant women with a humanitarian classification are at greater risk for unplanned cesareans compared with other low-risk migrant women from LMICs after controlling for medical factors. Strategies to prevent cesareans should consider the circumstances of migrant women that may be contributing to the use of unplanned cesareans in this population.

International migration as a determinant of emergency caesarean

BACKGROUND

High caesarean rates are of concern given associated risks. International migrant women (women born abroad) represent a substantial proportion of women giving birth in high-income countries (HICs) and face social conditions that may exacerbate childbearing health risks. Among migrant women, emergency rather than planned caesareans, tend to be more prevalent. This method of delivery can be stressful, physically harmful and result in an overall negative birth experience. Research establishing evidence of risk factors for emergency caesareans in migrants is insufficient.

AIMS

(1) Describe potential pathways (with a focus on modifiable factors) by which migration, using internationally recommended migration indicators: country of birth, length of time in country, fluency in receiving-country language, migration classification and ethnicity, may lead to emergency caesarean; and (2) propose a framework to guide future research for understanding "potentially preventable" emergency caesareans in migrant women living in HICs.

DISCUSSION

"Potentially preventable" emergency caesareans in migrant women are likely due to several modifiable, interrelated factors pre-pregnancy, during pregnancy and during labour. Migration itself is a determinant and also shapes other determinants. Complications and ineffective labour progress and/or foetal distress and ultimately the decision to perform an emergency caesarean may be the result of poor health (i.e., physiological effects), lack of support and disempowerment (i.e., psychological effects) and sub-optimal care.

CONCLUSION

Understanding the direct and indirect effects of migration on emergency caesarean is crucial so that targeted strategies can be developed and implemented for reducing unnecessary caesareans in this vulnerable population.

Contribution of HIV to Maternal Morbidity Among Refugee Women in Canada

OBJECTIVES

We compared severe maternal morbidity (SMM) and SMM subtypes, including HIV, of refugee women with those of nonrefugee immigrant and nonimmigrant women.

METHODS

We linked 1,154,421 Ontario hospital deliveries (2002-2011) to immigration records (1985-2010) to determine the incidence of an SMM composite indicator and its subtypes. We determined SMM incidence according to immigration periods, which were characterized by lifting restrictions for all HIV-positive immigrants (in 1991) and refugees who may place "excessive demand" on government services (in 2002).

RESULTS

Refugees had a higher risk of SMM (17.1 per 1000 deliveries) than did immigrants (12.1 per 1000) and nonimmigrants (12.4 per 1000). Among SMM subtypes, refugees had a much higher risk of HIV than did immigrants (risk ratio [RR] = 7.94; 95% confidence interval [CI] = 5.64, 11.18) and nonimmigrants (RR = 17.37; 95% CI = 12.83, 23.53). SMM disparities were greatest after the 2002 policy came into effect. After exclusion of HIV cases, SMM disparities disappeared.

CONCLUSIONS

An apparent higher risk of SMM among refugee women in Ontario, Canada is explained by their high prevalence of HIV, which increased over time parallel to admission policy changes favoring humanitarian protection.

Caesarean births among migrant women in high-income countries

High caesarean birth rates among migrant women living in high-income countries are of concern. Women from sub-Saharan Africa and South Asia consistently show overall higher rates compared with non-migrant women, whereas women from Latin America and North Africa/Middle East consistently show higher rates of emergency caesarean. Higher rates are more common with emergency caesareans than with planned caesareans. Evidence regarding risk factors among migrant women for undergoing a caesarean birth is lacking. Research suggests that pathways leading to caesarean births in migrants are complex, and they are likely to involve a combination of factors related to migrant women's physical and psychological health, their social and cultural context and the quality of their maternity care. Migration factors, including length of time in receiving country and migration classification, have an influence on delivery outcome; however, their effects appear to differ by women's country/region of origin.

Immigrants from conflict-zone countries: an observational comparison study of obstetric outcomes in a low-risk maternity ward in Norway

Background

Immigrants have higher risks for some adverse obstetric outcomes. Furthermore, refugees are reported to be the most vulnerable group. This study compared obstetric outcomes between immigrant women originating from conflict-zone countries and ethnic Norwegians who gave birth in a low-risk setting.

Methods

This was a population-based study linking the Medical Birth Registry of Norway to Statistics Norway. The study included the first registered birth during the study period of women from Somalia (n = 278), Iraq (n = 166), Afghanistan (n = 71), and Kosovo (n = 67) and ethnic Norwegians (n = 6826) at Baerum Hospital from 2006–2010. Background characteristics and obstetric outcomes of each immigrant group were compared with ethnic Norwegians with respect to proportions and risks calculated by logistic regression models.

Results

In total, 7408 women and their births were analyzed. Women from Somalia were most at risk for adverse obstetric outcomes. Compared with ethnic Norwegians, they had increased odds ratios (OR) for emergency cesarean section (OR 1.81, CI 1.17–2.80), postterm birth (OR 1.93, CI 1.29–2.90), meconium-stained liquor (OR 2.39, CI 1.76–3.25), and having a small-for-gestational-age infant (OR 3.97, CI 2.73–5.77). They had a reduced OR for having epidural analgesia (OR 0.40, CI 0.28–0.56) and a large-for-gestational-age infant (OR 0.32, CI 0.16–0.64). Women from Iraq and Afghanistan had increased risk of having a small-for-gestational-age infant with OR of 2.21 (CI 1.36–3.60) and 2.77 (CI 1.42–5.39), respectively. Iraqi women also had reduced odds ratio of having a large-for-gestational-age infant (OR 0.35, CI 0.15–0.83). Women from Kosovo did not differ from ethnic Norwegians in any of the outcomes we tested.

Conclusions

Even in our low-risk maternity ward, women originating from Somalia were at the greatest risk for adverse obstetric outcomes in the compared groups. We could not find the same risk among the other immigrant women, also originating from conflict-zone countries. Several factors may influence these findings, and this study suggests that immigrant women from Somalia need more targeted care during pregnancy and childbirth.

Caesarean section by immigrants' length of residence in Norway: a population-based study

BACKGROUND

Immigrants to Europe account for a significant proportion of births in a context of rising caesarean rates. We examined the risk of planned and emergency caesarean section (CS) by immigrants' length of residence in Norway, and compared the results with those of non-immigrants.

METHODS

We linked population-based birth registry data to immigration data for first deliveries among 23 147 immigrants from 10 countries and 385 306 non-immigrants between 1990-2009. Countries were grouped as having low CS levels (<16%; Iraq, Pakistan, Poland, Turkey, Yugoslavia, Vietnam) or high CS levels (>22%; the Philippines, Somalia, Sri Lanka, Thailand). Associations between length of residence and planned/emergency CS were estimated as relative risks (RR) with 95% confidence intervals (CI) in multivariable models.

RESULTS

In the immigrant group with low CS levels, planned, but not emergency, CS was independently associated with longer length of residence. Compared with recent immigrants (<1 year), the risk of planned CS was 70% greater among immigrants with residency of 2-5 years (RR 1.70, CI: 1.19-2.42), and twice as high in those with residency of ≥ 6 years. (RR 2.01, CI: 1.28-3.17). Compared with non-immigrants, immigrants in the low group with residency <2 years had lower risk of planned CS, while those with residency >2 years had greater risk of emergency CS. In the high group, the risk of planned CS was similar to non-immigrants, while emergency CS was 51-75% higher irrespective of length of residency.

CONCLUSION

Efforts to improve immigrants' labour outcomes should target subgroups with sustained high emergency caesarean risk.