Dataset Information

International migration and caesarean birth: a systematic review and meta-analysis.

ABSTRACT:

Background

Perinatal health disparities including disparities in caesarean births have been observed between migrant and non-migrant women and some literature suggests that non-medical factors may be implicated. A systematic review was conducted to determine if migrants in Western industrialized countries consistently have different rates of caesarean than receiving-country-born women and to identify the reasons that explain these differences.

Methods

Reports were identified by searching 12 literature databases (from inception to January 2012; no language limits) and the web, by bibliographic citation hand-searches and through key informants. Studies that compared caesarean rates between international migrants and non-migrants living in industrialized countries and that did not have a 'fatal flaw' according to the US Preventative Services Task Force criteria were included. Studies were summarized, analyzed descriptively and where possible, meta-analyzed.

Results

Seventy-six studies met inclusion criteria. Caesarean rates between migrants and non-migrants differed in 69% of studies. Meta-analyses revealed consistently higher overall caesarean rates for Sub-Saharan African, Somali and South Asian women; higher emergency rates for North African/West Asian and Latin American women; and lower overall rates for Eastern European and Vietnamese women. Evidence to explain the consistently different rates was limited. Frequently postulated risk factors for caesarean included: language/communication barriers, low SES, poor maternal health, GDM/high BMI, feto-pelvic disproportion, and inadequate prenatal care. Suggested protective factors included: a healthy immigrant effect, preference for a vaginal birth, a healthier lifestyle, younger mothers and the use of fewer interventions during childbirth.

Conclusion

Certain groups of international migrants consistently have different caesarean rates than receiving-country-born women. There is insufficient evidence to explain the observed differences.

SUBMITTER: Merry L

PROVIDER: S-EPMC3621213 | biostudies-literature | 2013 Jan

REPOSITORIES: biostudies-literature

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Publications

International migration and caesarean birth: a systematic review and meta-analysis.

Merry Lisa L Small Rhonda R Blondel Béatrice B Gagnon Anita J AJ

BMC pregnancy and childbirth 20130130

<h4>Background</h4>Perinatal health disparities including disparities in caesarean births have been observed between migrant and non-migrant women and some literature suggests that non-medical factors may be implicated. A systematic review was conducted to determine if migrants in Western industrialized countries consistently have different rates of caesarean than receiving-country-born women and to identify the reasons that explain these differences.<h4>Methods</h4>Reports were identified by se ...[more]

PMID: 23360183

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Project description:ObjectiveTo compare the risk of stillbirth and miscarriage in a subsequent pregnancy in women with a previous caesarean or vaginal delivery.DesignSystematic review of the published literature including seven databases: CINAHL; the Cochrane library; Embase; Medline; PubMed; SCOPUS and Web of Knowledge from 1945 until November 11(th) 2011, using a detailed search-strategy and cross-checking of reference lists.Study selectionCohort, case-control and cross-sectional studies examining the association between previous caesarean section and subsequent stillbirth or miscarriage risk. Two assessors screened titles to identify eligible studies, using a standardised data abstraction form and assessed study quality.Data synthesis11 articles were included for stillbirth, totalling 1,961,829 pregnancies and 7,308 events. Eight eligible articles were included for miscarriage, totalling 147,017 pregnancies and 12,682 events. Pooled estimates across the stillbirth studies were obtained using random-effect models. Among women with a previous caesarean an increase in odds of 1.23 [95% CI 1.08, 1.40] for stillbirth was yielded. Subgroup analyses including unexplained stillbirths yielded an OR of 1.47 [95% CI 1.20, 1.80], an OR of 2.11 [95% CI 1.16, 3.84] for explained stillbirths and an OR of 1.27 [95% CI 0.95, 1.70] for antepartum stillbirths. Only one study reported adjusted estimates in the miscarriage review, therefore results are presented individually.ConclusionsGiven the recent revision of the National Institute for Health and Clinical Excellence guidelines (NICE), providing women the right to request a caesarean, it is essential to establish whether mode of delivery has an association with subsequent risk of stillbirth or miscarriage. Overall, compared to vaginal delivery, the pooled estimates suggest that caesarean delivery may increase the risk of stillbirth by 23%. Results for the miscarriage review were inconsistent and lack of adjustment for confounding was a major limitation. Higher methodological quality research is required to reliably assess the risk of miscarriage in subsequent pregnancies.

Project description:BackgroundCaesarean delivery has increased worldwide, however, the effects on fertility are largely unknown. This systematic review aims to compare subsequent sub-fertility (time to next pregnancy or birth) among women with a Caesarean delivery to women with a vaginal delivery.MethodsSystematic review of the literature including seven databases: CINAHL; the Cochrane Library; Embase; Medline; PubMed; SCOPUS and Web of Knowledge (1945 - October 2012), using detailed search-strategies and reference list cross-checking. Cohort, case-control and cross-sectional studies were included. Two assessors reviewed titles, abstracts, and full articles using standardised data abstraction forms and assessed study quality.Results11 articles were eligible for inclusion in the systematic review, of these five articles which adjusted for confounders were combined in a meta-analysis, totalling 750,407 women using fixed-effect models. Previous Caesarean delivery was associated with an increased risk of sub-fertility [pooled odds ratio (OR) 0.90; 95% CI 0.86, 0.93]. Subgroup analyses by parity [primiparous women: OR 0.91; 95% CI 0.87, 0.96; not limited to primiparous women: OR 0.81; 95% CI 0.73, 0.90]; by publication date (pre-2000: OR 0.80, 95% CI 0.68, 0.94; post-2000: OR 0.90, 95% CI 0.86, 0.94); by length of follow-up (<10 years: OR 0.81, 95% CI 0.73, 0.90; >10 years: OR 0.91, 95% CI 0.87, 0.96); by indication for mode of delivery (specified: 0.92, 95% CI 0.88, 0.97; not specified: OR 0.81, 95% CI 0.73, 0.90); by cohort size (<35,000: OR 0.79, 95% CI 0.67, 0.92; >35,000: OR 0.90, 95% CI 0.87, 0.95), by definition of sub-fertility used divided into (birth interval [BI]: OR 0.89, 95% CI 0.84, 0.94; inter-pregnancy interval [IPI]: OR 0.91, 95% CI 0.85, 0.97; and categorical measures: OR 0.81, 95% CI 0.73, 0.90); continuous measures: OR 0.91, 95% CI 0.87, 0.96) were performed. Results of the six studies not included in the meta-analysis (which did not adjust for confounders) are presented individually.ConclusionsThe meta-analysis shows an increased waiting time to next pregnancy and risk of sub-fertility among women with a previous Caesarean delivery. However, included studies are limited by poor epidemiological methods such as variations in the definition of time to next pregnancy, lack of confounding adjustment, or details of the indication for Caesarean delivery. Further research of a more robust methodological quality to better explore any underlying causes of sub-fertility and maternal intent to delay childbearing is warranted.

Project description:BackgroundCaesarean section (CS) rate increased dramatically worldwide, exceeding the World Health Organization's benchmark (10-15 %) in many countries. This rate varies in different regions of the continent. Using various study designs, researchers from across East African countries investigated the prevalence of caesarean section and the factor associated with it but no study shows a pooled prevalence of caesarean section in the Eastern African region. Therefore, this review aimed to systematically summarize and estimate the pooled prevalence of caesarean section and its associated factors in Eastern Africa, 2023.MethodsPubMed, Web of Science, EMBASE, Scopus and CINAHL were rigorously searched to find relevant studies. All identified observational studies reporting the prevalence of CS and its associated factors in East Africa published till August 2023 were considered. Heterogeneity across the studies was evaluated using the I2 test. Publication bias was assessed by funnel plot and Egger's regression test. Finally, a random effect meta-analysis model was computed to estimate the pooled prevalence of CS and qualitative analysis was employed for associated factors. The study protocol was registered in PROSPERO.ResultsThis review was assessed using twenty-six eligible studies from a total of 2223 articles with a total of 600,431 participants. In this meta-analysis, the pooled prevalence of caesarean section in Eastern Africa was 24.0 % (95%CI: 22-27 %). The highest pooled prevalence of caesarean section was in Ethiopia, 28.30 % (95%CI; 21.3-35.2 %), and the lowest was seen in Uganda, 11.9 % (95%CI; 7.9-15.9 %). Urban residency, having high level of wealth asset, education level college and above, advanced maternal age, big birth weight, history of previous caesarean section, private institution delivery, multiple pregnancies, pregnancy-induced hypertension, antepartum haemorrhage and fetal malpresentation were linked with a greater likelihood of having CS.Conclusionsand recommendation: The overall pooled prevalence of CS in Eastern Africa was high compared to the WHO proposed recommended range. Therefore, the finding implies that each East African countries Ministry of Health and health care professionals shall be given particular emphasis made on strengthening antenatal care services and ensure more women have access to skilled healthcare professionals during childbirth. This can help in providing appropriate interventions, support to women and reducing the need for emergency and unnecessary CSs. The result of this research are a baseline data for future researchers to conduct further studies to better understand the reasons behind the high rates and identify potential interventions and solutions specific to the African context.PROSPERO protocol number: CRD42023440131.

Dataset Information

International migration and caesarean birth: a systematic review and meta-analysis.

Background

Methods

Results

Conclusion

Publications

International migration and caesarean birth: a systematic review and meta-analysis.

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