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Objective: To evaluate the risk factors for postpartum hemorrhage (PPH) according to the Robson Classification in a low-risk maternity hospital. Methods: We conducted retrospective cohort study by analyzing the medical records of pregnant women attended in a low-risk maternity hospital, during from November 2019 to November 2021. Variables analyzed were: maternal age, type of delivery, birth weight, parity, Robson Classification, and causes of PPH. We compared the occurrence of PPH between pregnant women with spontaneous (Groups 1 and 3) and with induction of labor (2a and 4a). Chi-square and Student t-tests were performed. Variables were compared using binary logistic regression. Results: There were 11,935 deliveries during the study period. According to Robson's Classification, 48.2% were classified as 1 and 3 (Group I: 5,750/11,935) and 26.1% as 2a and 4a (Group II: 3,124/11,935). Group II had higher prevalence of PPH than Group I (3.5 vs. 2.7%, p=0.028). Labor induction increased the occurrence of PPH by 18.8% (RR: 1.188, 95% CI: 1.02-1.36, p=0.030). Model including forceps delivery [x2(3)=10.6, OR: 7.26, 95%CI: 3.32-15.84, R2 Nagelkerke: 0.011, p<0.001] and birth weight [x2(4)=59.0, OR: 1.001, 95%CI:1.001-1.001, R2 Nagelkerke: 0.033, p<0.001] was the best for predicting PPH in patients classified as Robson 1, 3, 2a, and 4a. Birth weight was poor predictor of PPH (area under ROC curve: 0.612, p<0.001, 95%CI: 0.572-0.653). Conclusion: Robson Classification 2a and 4a showed the highest rates of postpartum hemorrhage. The model including forceps delivery and birth weight was the best predictor for postpartum hemorrhage in Robson Classification 1, 3, 2a, and 4a.

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Abstract Objective To evaluate the mode of delivery according to Robson classification (RC) and the perinatal outcomes in fetal growth restriction (FGR) and small for gestational age (SGA) fetuses. Methods Retrospective cohort study by analyzing medical records of singleton pregnancies from two consecutive years (2018 and 2019). FGR was defined according to Delphi Consensus. The Robson groups were divided into two intervals (1-5.1 and 5.2-10). Results Total of 852 cases were included: FGR (n = 85), SGA (n = 20) and control (n=747). FGR showed higher percentages of newborns < 1,500 grams (p<0.001) and higher overall cesarean section (CS) rates (p<0.001). FGR had the highest rates of neonatal resuscitation and neonatal intensive care unit admission (p<0.001). SGA and control presented higher percentage of patients classified in 1 - 5.1 RC groups, while FGR had higher percentage in 5.2 - 10 RC groups (p<0.001). FGR, SGA and control did not differ in the mode of delivery in the 1-5.1 RC groups as all groups showed a higher percentage of vaginal deliveries (p=0.476). Conclusion Fetuses with FGR had higher CS rates and worse perinatal outcomes than SGA and control fetuses. Most FGR fetuses were delivered by cesarean section and were allocated in 5.2 to 10 RC groups, while most SGA and control fetuses were allocated in 1 to 5.1 RC groups. Vaginal delivery occurred in nearly 60% of FGR allocated in 1-5.1 RC groups without a significant increase in perinatal morbidity. Therefore, the vaginal route should be considered in FGR fetuses.

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Abstract Objective To evaluate the risk factors for postpartum hemorrhage (PPH) according to the Robson Classification in a low-risk maternity hospital. Methods We conducted retrospective cohort study by analyzing the medical records of pregnant women attended in a low-risk maternity hospital, during from November 2019 to November 2021. Variables analyzed were: maternal age, type of delivery, birth weight, parity, Robson Classification, and causes of PPH. We compared the occurrence of PPH between pregnant women with spontaneous (Groups 1 and 3) and with induction of labor (2a and 4a). Chi-square and Student t-tests were performed. Variables were compared using binary logistic regression. Results There were 11,935 deliveries during the study period. According to Robson's Classification, 48.2% were classified as 1 and 3 (Group I: 5,750/11,935) and 26.1% as 2a and 4a (Group II: 3,124/11,935). Group II had higher prevalence of PPH than Group I (3.5 vs. 2.7%, p=0.028). Labor induction increased the occurrence of PPH by 18.8% (RR: 1.188, 95% CI: 1.02-1.36, p=0.030). Model including forceps delivery [x2(3)=10.6, OR: 7.26, 95%CI: 3.32-15.84, R2 Nagelkerke: 0.011, p<0.001] and birth weight [x2(4)=59.0, OR: 1.001, 95%CI:1.001-1.001, R2 Nagelkerke: 0.033, p<0.001] was the best for predicting PPH in patients classified as Robson 1, 3, 2a, and 4a. Birth weight was poor predictor of PPH (area under ROC curve: 0.612, p<0.001, 95%CI: 0.572-0.653). Conclusion Robson Classification 2a and 4a showed the highest rates of postpartum hemorrhage. The model including forceps delivery and birth weight was the best predictor for postpartum hemorrhage in Robson Classification 1, 3, 2a, and 4a.

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BACKGROUND: Latin America has the highest Cesarean Section Rates (CSR) in the world. Robson's Ten Group Classification System (RTGCS) was developed to enable understanding the CSR in different groups of women, classified according to obstetric characteristics into one of ten groups. The size of each CS group may provide helpful data on quality of care in a determined region or setting. Data can potentially be used to compare the impact of conditions such as maternal morbidity on CSR. The objective of this study is to understand the impact of Severe Maternal Morbidity (SMM) on CSR in ten different groups of RTGCS. METHODS: Secondary analysis of childbirth information from 2018 to 2021, including 8 health facilities from 5 Latin American and Caribbean countries (Bolivia, Guatemala, Honduras, Nicaragua, and the Dominican Republic), using a surveillance database (SIP-Perinatal Information System, in Spanish) implemented in different settings across Latin America. Women were classified into one of RTGCS. The frequency of each group and its respective CSR were described. Furthermore, the sample was divided into two groups, according to maternal outcomes: women without SMM and those who experienced SMM, considering Potentially Life-threatening Conditions, Maternal Near Miss and Maternal Death as the continuum of morbidity. RESULTS: Available data were obtained from 92,688 deliveries using the Robson Classification. Overall CSR was around 38%. Group 5 was responsible for almost one-third of cesarean sections. SMM occurred in 6.7% of cases. Among these cases, the overall CSR was almost 70% in this group. Group 10 had a major role (preterm deliveries). Group 5 (previous Cesarean section) had a very high CSR within the group, regardless of the occurrence of maternal morbidity (over 80%). CONCLUSION: Cesarean section rate was higher in women experiencing SMM than in those without SMM in Latin America. SMM was associated with higher Cesarean section rates, especially in groups 1 and 3. Nevertheless, group 5 was the major contributor to the overall CSR.

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BACKGROUND: Cesarean section (CS) rates are increasing worldwide and are associated with negative maternal and child health outcomes when performed without medical indication. However, there is still limited knowledge about the association between high CS rates and early-term births. This study explored the association between CSs and early-term births according to the Robson classification. METHODS: A population-based, cross-sectional study was performed with routine registration data of live births in Brazil between 2012 and 2019. We used the Robson classification system to compare groups with expected high and low CS rates. We used propensity scores to compare CSs to vaginal deliveries (1:1) and estimated associations with early-term births using logistic regression. RESULTS: A total of 17,081,685 live births were included. Births via CS had higher odds of early-term birth (OR 1.32; 95% CI 1.32-1.32) compared to vaginal deliveries. Births by CS to women in Group 2 (OR 1.50; 95% CI 1.49-1.51) and 4 (OR 1.57; 95% CI 1.56-1.58) showed the highest odds of early-term birth, compared to vaginal deliveries. Increased odds of an early-term birth were also observed among births by CS to women in Group 3 (OR 1.30, 95% CI 1.29-1.31), compared to vaginal deliveries. In addition, live births by CS to women with a previous CS (Group 5 - OR 1.36, 95% CI 1.35-1.37), a single breech pregnancy (Group 6 - OR 1.16; 95% CI 1.11-1.21, and Group 7 - OR 1.19; 95% CI 1.16-1.23), and multiple pregnancies (Group 8 - OR 1.46; 95% CI 1.40-1.52) had high odds of an early-term birth, compared to live births by vaginal delivery. CONCLUSIONS: CSs were associated with increased odds of early-term births. The highest odds of early-term birth were observed among those births by CS in Robson Groups 2 and 4.

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BACKGROUND: Increasing cesarean section (CS) rates are a global concern because they are related to higher maternal and neonatal complication rates and do not provide positive childbirth experiences. In 2019, Brazil ranked second globally, given its overall CS rate of 57%. According to the World Health Organization (WHO), populational CS rates of 10-15% are associated with decreased maternal, neonatal, and infant mortality rates. This study aimed to investigate whether multidisciplinary care following evidence-based protocols associated with a high motivation of both women and professionals for a vaginal birth leads to less overuse of CS in a Brazilian private practice (PP). METHODS: This cross-sectional study evaluated CS rates by Robson group for women who sought vaginal birth in a private practice in Brazil comparing with Swedish data. Collaborative care of midwives and obstetricians who adopted evidence-based guidelines was offered. CS rates, overall and by Robson group, contribution of each Robson group to the overall CS rate, clinical and nonclinical interventions, vaginal birth, pre-labor CS, and intrapartum CS proportions were estimated. The expected CS rate was calculated using the World Health Organization C-model tool. The analysis used Microsoft Excel and R Studio (version 1.2.1335. 2009-2019). RESULTS: The PP overall CS rate was 15.1% (95%CI, 13.4-17.1%) versus the 19.8% (95%CI, 14.8-24.7%) rate expected by the WHO C-model tool. The population included 43.7% women in Robson Group 1 (nulliparous, single, cephalic, at term, spontaneous labor), 11.4% in Group 2 (nulliparous, single, cephalic, at term, induced labor or CS before labor), and 14.9% in Group 5 (multiparous women with previous CS), the greatest contributors to higher CS rates (75.4% of them). The Swedish overall CS rate was 17.9% (95%CI, 17.6-18.1%) in a population of 27% women in Robson Group 1, 10.7% in Group 2, and 9.2% in Group 5. CONCLUSIONS: Multidisciplinary care following evidence-based protocols, associated with high motivation of both women and professionals for vaginal birth, may lead to a significant and safe reduction of CS rates even in contexts such as Brazil, with high medicalization of obstetric care and excess CS.

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Abstract Objective To compare cesarean section (CS) rates according to the Robson Ten Group Classification System (RTGCS) and its indications in pregnant women admitted for childbirth during the first wave of the coronavirus disease 2019 (COVID-19) pandemic with those of the previous year. Materials and Methods We conducted a cross-sectional study to compare women admitted for childbirth from April to October 2019 (before the pandemic) and from March to September 2020 (during the pandemic). The CSs and their indications were classified on admission according to the RTGCS, and we also collected data on the route of delivery (vaginal or CS). Both periods were compared using the Chi-squared (χ2) test or the Fisher exact test. Results In total, 2,493 women were included, 1,291 in the prepandemic and 1,202 in the pandemic period. There was a a significant increase in the CS rate (from 39.66% to 44.01%; p = 0.028), mostly due to maternal request (from 9.58% to 25.38%; p < 0.01). Overall, groups 5 and 2 contributed the most to the CS rates. The rates decreased among group 1 and increased among group 2 during the pandemic, with no changes in group 10. Conclusion There was an apparent change in the RTGSC comparing both periods, with a significant increase in CS rates, mainly by maternal request, most likely because of changes during the pandemic and uncertainties and fear concerning COVID-19.

Resumo Objetivo Comparar as taxas de cesárea segundo a Classificação de Robson, assim como suas indicações, em mulheres admitidas para parto durante a primeira onda de doença do coronavírus 2019 (coronavirus disease 2019, COVID-19, em inglês), com as do ano anterior. Materiais e Métodos Conduzimos um estudo transversal que comparou as mulheres admitidas para parto entre abril e outubro de 2019 (pré-pandemia) e entre março e setembro de 2020 (durante a pandemia). As cesarianas e as suas indicações foram classificadas conforme o sistema proposto por Robson, e obteve-se a via de parto (vaginal ou cesárea). Ambos os períodos foram comparados usando-se os testes do Qui quadrado ou o exato de Fisher. Resultados Ao todo, 2.943 mulheres foram incluídas, das quais 1.291 antes da pandemia e 1.202 durante a pandemia. A taxa de cesárea aumentou significativamente (de 39.66% para 44,01%; p = 0,028), principalmente devido a desejo materno (de 9,58% para 25,38%; p < 0,01). Os grupos 5 e 2 foram os que mais contribuíram para as taxas de cesárea. Durante a pandemia, o grupo 1 reduziu sua frequência, enquanto o grupo 2 a aumentou. Conclusão Houve uma aparente mudança nas características da população conforme a classificação de Robson. Observou-se significativo aumento nas taxas de cesárea, principalmente por desejo materno, o que reflete possíveis incertezas e medos relacionados à COVID-19.

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BACKGROUND: The rate of Cesarean section (CS) deliveries has been increasing worldwide for decades. Brazil exhibits high rates of patient-requested CS deliveries. Prenatal care is essential for reducing and preventing maternal and child morbidity and mortality, ensuring women's health and well-being. The aim of this study was to verify the association between the level of prenatal care, as measured by the Kotelchuck (APNCU - Adequacy of the prenatal care utilization) index and CS rates. METHODS: We conducted a cross-sectional study based on data from routine hospital digital records and federal public health system databases (2014-2017). We performed descriptive analyses, prepared Robson Classification Report tables, and estimated the CS rate for the relevant Robson groups across distinct levels of prenatal care. Our analysis also considered the payment source for each childbirth - either public healthcare or private health insurers - and maternal sociodemographic data. RESULTS: CS rate by level of access to prenatal care was 80.0% for no care, 45.2% for inadequate, 44.2% for intermediate, 43.0% for adequate, and 50.5% for the adequate plus category. No statistically significant associations were found between the adequacy of prenatal care and the rate of cesarean sections in any of the most relevant Robson groups, across both public (n = 7,359) and private healthcare (n = 1,551) deliveries. CONCLUSION: Access to prenatal care, according to the trimester in which prenatal care was initiated and the number of prenatal visits, was not associated with the cesarean section rate, suggesting that factors that assess the quality of prenatal care, not simply adequacy of access, should be investigated.

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Objetivo: Avaliar a taxa de cesáreas e suas principais indicações com base na classificação de Robson na Maternidade Municipal de São Vicente em 2020, um hospital público de risco habitual. Métodos: Trata-se de um estudo transversal observacional. Foram efetuadas revisão, correção e análise retrospectiva e documental da classificação de Robson na Maternidade Municipal de São Vicente. Foram analisados partos de janeiro a dezembro de 2020, dos quais foram coletadas e ordenadas as informações mais relevantes para a pesquisa. Resultados: Uma amostra de 1.627 partos foi encontrada. A taxa geral de cesáreas encontrada foi de 46,3%. A contribuição relativa dos grupos 1, 2 e 5 para a taxa de cesáreas foi de 16,8%, 13,3% e 46,8%, respectivamente, enquanto a contribuição relativa das indicações de cesáreas foi de 25,5% para parto cesáreo anterior e de 21,5% para sofrimento fetal agudo. Conclusão: Foi evidenciada alta taxa de cesáreas, e as principais indicações foram cesárea prévia e sofrimento fetal agudo. Os grupos 1, 2 e 5 da classificação de Robson foram os que mais contribuíram para essa taxa.

Objective: To evaluate the cesarean section rate and the cesarean indication rate based on Robson Classification during 2020 in Sã o Vicente's Municipal Maternity, a habitual-risk public hospital. Methods: This is a cross-sectional observational study. We have reviewed, corrected, analyzed retrospectively and documented Robson Classification in Sã o Vicente's Municipal Maternity. Births from January to December 2020 were analyzed, from which the main data for the research was collected and organized. Results: A sample of 1,627 births was found. The overall rate of cesarean section was 46.3%. The relative contribution of groups 1, 2 and 5 to the cesarean rate was 16.8%, 13.3% and 46.8%, respectively. While the cesarean indication relative contribution was 25.5% for previous cesarean and 21.5% for fetal distress. Conclusion: We found a high cesarean rate and the main indications were previous cesarean and fetal distress. Robson classification groups 1, 2 and 5 contributed the most to this rate.

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Introdução: Os índices de parto cesariano vêm aumentando mundialmente e ultrapassando, em muitos locais, os índices de parto vaginal. No entanto, tais índices nem sempre refletem a indicação real do procedimento. Objetivo: analisar as taxas de cesáreas de hospitais vinculados à Secretaria Municipal do Estado do Paraná no ano de 2021, exceto universitários, através da Classificação de Robson. Métodos: Trata-se de um estudo descritivo, transversal e de abordagem quantitativa, foram avaliadas 356 instituições de saúde do estado do Paraná, os dados foram coletados no site do Departamento de Informática do Sistema Único de Saúde (DATASUS), através do Sistema de Informações sobre Nascidos Vivos (SINASC) via tabulador oficial do Ministério da Saúde- Tabwim, no ano de 2021. Resultados: Os maiores índices segundo Classificação de Robson, foram de mulheres entre 20 à 34 anos, com companheiro, escolaridade de oito anos ou mais de estudo, multíparas com filhos vivos anteriores a última gestação, sendo estas a termo, com gravidez única e sem anomalias congênitas, além da realização de sete consultas de pré-natal com seu início no primeiro trimestre de gestação. Conclusão: o parto cesariano ultrapassa os índices do parto vaginal. Podemos evidenciar a importância que os profissionais de saúde possuem para revertermos essa realidade através da educação em saúde, e no desenvolvimento de estratégias que minimizem esses números expressivos de cesarianas.

Introduction: The rate of cesarean delivery has been increasing worldwide and in many places surpassing the rate of vaginal delivery. However, such indexes do not always reflect the actual indication of the procedure. Objective: To analyze the rates of cesarean sections of hospitals linked to the Municipal Secretariat of the State of Paraná in the year 2021, except university, through the Robson Classification. Methods: It is a descriptive, cross-sectional and quantitative approach study, 356 health institutions of the state of Paraná were evaluated, the data were collected on the website of the Department of Informatics of the Unified Health System (DATASUS), through the Information System on Live Births (SINASC) via the official tabler of the Ministry of Health- Tabwim, in the year 2021. Results: The highest rates according to the Robson Classification were women between 20 and 34 years of age, with a partner, eight years of schooling or more of study, multiparous with living children prior to the last pregnancy, these being full-term, with single pregnancy and without congenital anomalies, in addition to having seven prenatal appointments with their start in the first trimester of gestation. Conclusion: cesarean delivery exceeds the rates of vaginal delivery. We can highlight the importance that health professionals have to reverse this reality through health education, and in the development of strategies that minimize these expressive numbers of cesareans.

Introducción: las tasas de natalidad cesárea han estado aumentando en todo el mundo y han superado las tasas de natalidad vaginal en muchos lugares. Sin embargo, esos índices no siempre reflejan la indicación real del procedimiento. Objetivo: analizar las tasas de cesárea hospitalaria vinculada a la Secretaría Municipal del Estado de Paraná en 2021, excepto los graduados universitarios, a través de la Clasificación de Robson. Métodos: Se trata de un estudio descriptivo, transversal y cuantitativo; se evaluaron 356 instituciones de salud del estado de Paraná; los datos se recogieron en el sitio web del Departamento de Información del Sistema de Salud Pública (DATASUS), a través del Sistema de Información sobre Aves Vivas (SINASC) a través del tabulador oficial del Ministerio de Salud ­ Tabwim, en 2021. Resultados: Los índices más altos según la Clasificación de Robson fueron las mujeres de 20 a 34 años de edad, con parejas, escolaridad durante ocho años o más de estudio, multiples con hijos vivos antes del último embarazo, con un solo embarazo y sin anomalías congénitas, y también se realizaron siete consultas prenatales con su inicio en el primer trimestre de gestación. Conclusión: el parto cesárea excede las tasas vaginales de nacimiento. Podemos destacar la importancia que tienen los profesionales de la salud para revertir esta realidad a través de la educación sanitaria, y en el desarrollo de estrategias que minimicen este número expresivo de cesáreas.

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Background: Latin America has the highest Cesarean Section Rates (CSR) in the world. Robson's Ten Group Classification System (RTGCS) was developed to enable understanding the CSR in different groups of women, classified according to obstetric characteristics into one of ten groups. The size of each CS group may provide helpful data on quality of care in a determined region or setting. Data can potentially be used to compare the impact of conditions such as maternal morbidity on CSR. The objective of this study is to understand the impact of Severe Maternal Morbidity (SMM) on CSR in ten different groups of RTGCS. Methods: Secondary analysis of childbirth information from 2018 to 2021, including 8 health facilities from 5 Latin American and Caribbean countries (Bolivia, Guatemala, Honduras, Nicaragua, and the Dominican Republic), using a surveillance database (SIP-Perinatal Information System, in Spanish) implemented in different settings across Latin America. Women were classified into one of RTGCS. The frequency of each group and its respective CSR were described. Furthermore, the sample was divided into two groups, according to maternal outcomes: women without SMM and those who experienced SMM, considering Potentially Life-threatening Conditions, Maternal Near Miss and Maternal Death as the continuum of morbidity. Results: Available data were obtained from 92,688 deliveries using the Robson Classification. Overall CSR was around 38%. Group 5 was responsible for almost one-third of cesarean sections. SMM occurred in 6.7% of cases. Among these cases, the overall CSR was almost 70% in this group. Group 10 had a major role (preterm deliveries). Group 5 (previous Cesarean section) had a very high CSR within the group, regardless of the occurrence of maternal morbidity (over 80%). Conclusion: Cesarean section rate was higher in women experiencing SMM than in those without SMM in Latin America. SMM was associated with higher Cesarean section rates, especially in groups 1 and 3. Nevertheless, group 5 was the major contributor to the overall CSR. (AU)

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BACKGROUND: The use of caesarean section has steadily increased, with Latin America being the region with the highest rates. Multiple factors account for that increase and the Robson classification is appropriate to compare determinants at the clinical level for caesarean section rates over time. The purpose of this study is to describe the evolution of caesarean section rates by Robson groups in Uruguay from 2008 to 2018 using a country level database. METHODS: We included the records of all women giving birth in Uruguay (pregnancies ≥22 weeks and weights ≥500 g) with valid data in the mode of childbirth recorded in the Perinatal Information System database between 2008 and 2018. Caesarean section rates were calculated by Robson groups for each of the years included, disaggregated by care sector (public/private) and by geographical area (Capital City/Non-Capital), with time trends and their significance analyzed using linear regression models. RESULTS: Of the total 485,263 births included in this research, the overall caesarean section rate was 43,1%. In 2018, among the groups at lower risk of caesarean section (1 to 4), the highest rates were seen in women in group 2B (98,8%), followed by those in group 4B (97,9%). A significant increase in the number of caesarean sections was seen in groups 2B (97,9 to 98,8%), 3 (8,36 to 11,1%) and 4 (A (22,7 to 26,9%) and B (95,4 to 97,9%) Significant growth was also observed in groups 5 (74,3 to 78,1%), 8 (90,6 to 95,5%), and 10 (39,1 to 46,7%). The private sector had higher rates of caesarean section for all groups throughout the period, except for women in group 9. The private sector in Montevideo presented the highest rates in the groups with the lowest risk of caesarean section (1, 2A, 3 and 4A), followed by the private sector outside of the capital. CONCLUSION: Uruguay is no exception to the increasing caesarean section trend, even in groups of women who have lower risk of requiring caesarean section. The implementation of interventions aimed at reducing caesarean section in the groups with lower obstetric risk in Uruguay is warranted.

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OBJECTIVE: The objective of this study was to assess caesarean section (CS) rates before and after the implementation of the Project Appropriate Birth (PPA), based on the Robson ten group classification system. DESIGN: A before-and-after study. SETTING: Maternity hospital in South Brazil. POPULATION: All pregnant women attending from April 2016 to April 2017 (period 1, pre-implementation of PPA) and from June 2017 to June 2018 (period 2, post-implementation of PPA). METHODS: Maternal and obstetric characteristics were evaluated, including Robson's classification, based on the characteristics of pregnancy and childbirth. A chi-square test and crude and adjusted relative rates were used to analyse the study variables. The significance level was set at 5%. MAIN OUTCOME MEASURES: The CS rate for each group, their contribution to the overall CS rate and the differences in these contributions before and after PPA implementation. RESULTS: The CS rates decreased from 62.4 to 55.6%, which represented a 10.9% reduction after the implementation of the PPA. Pregnant women in Robson classification groups 1-4 had a 21.4% reduction in CS rates, ranging from 49.1 to 38.6%. The greatest contributors to the overall CS rates were group 5 and group 2, accounting for more than 60% of the CS deliveries. CONCLUSION: The study results suggest that Project Appropriate Birth had an impact on the reduction of CS rates, especially in Robson classification groups 1 through 4, which indicates that providing mothers with evidence-based interventions for labour and childbirth assistance contributed to reduce CS rates. TWEETABLE ABSTRACT: The Project Appropriate Birth is an innovative project that has demonstrated promising results, suggesting that interventions based on scientific evidence can lead to real changes in childbirth care, contributing to reduce CS rates. The aim of the PPA is to promote activities to improve childbirth care and encourage vaginal delivery. In this study, 6238 pregnant women admitted to the hospital for delivery were included and classified into one of the Robson 10-group classification. Findings revealed a 10.9% reduction in the overall CS rate and a 21.4% reduction for pregnant women in Robson classification groups 1 through 4, after the implementation of the PPA.

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BACKGROUND: Applying the Robson classification to all births in Brazil, the objectives of our study were to estimate the rates of caesarean section delivery, assess the extent to which caesarean sections were clinically indicated, and identify variation across socioeconomic groups. METHODS: We conducted a population-based study using routine records of the Live Births Information System in Brazil from January 1, 2011, to December 31, 2017. We calculated the relative size of each Robson group; the caesarean section rate; and the contribution to the overall caesarean section rate. We categorised Brazilian municipalities using the Human Development Index to explore caesarean section rates further. We estimated the time trend in caesarean section rates. RESULTS: The rate of caesarean sections was higher in older and more educated women. Prelabour caesarean sections accounted for more than 54 % of all caesarean deliveries. Women with a previous caesarean section (Group 5) made up the largest group (21.7 %). Groups 6-9, for whom caesarean sections would be indicated in most cases, all had caesarean section rates above 82 %, as did Group 5. The caesarean section rates were higher in municipalities with a higher HDI. The general Brazilian caesarean section rate remained stable during the study period. CONCLUSIONS: Brazil is a country with one of the world's highest caesarean section rates. This nationwide population-based study provides the evidence needed to inform efforts to improve the provision of clinically indicated caesarean sections. Our results showed that caesarean section rates were lower among lower socioeconomic groups even when clinically indicated, suggesting sub-optimal access to surgical care.

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OBJECTIVE: To analyze the caesarean deliveries attended in our hospital, grouping them according to the Robson Classification System and to establish measures in order to reduce caesarean delivery rates. METHOD: Prospective study of all the deliveries attended at Hospital Doctor Peset in 2019 using the Robson classification. RESULTS: A total of 1113 births have been analyzed with a total cesarean section rate of 25.3%. The largest contribution to the total cesarean delivery rate with 34.4% was group 2A (nulliparous women with a single fetus in cephalic presentation, 37 weeks or more pregnant who started labor by induction). Secondly, group 5 (multiparous women with at least previous cesarean section, with single cephalic fetus, 37 weeks or more pregnant) which represents the 20.1% of the total. Inductions in nulliparas multiply the cesarean section rate by 3 compared to nulliparas that initiate labor spontaneously. CONCLUSIONS: Robsons classification is a tool that allows to easily classify and analyze the groups in which to implement measures to reduce the number of caesarean sections performed. Analyzing the induction indications and reviewing action protocols could suppose a substantial decrease in the caesarean section rate in our center.

OBJETIVO: Analizar las cesáreas realizadas en nuestro centro agrupándolas según la clasificación de Robson para establecer medidas que permitan reducir la tasa de cesáreas. MÉTODO: Auditoría prospectiva de los nacimientos asistidos en el Hospital Doctor Peset en el año 2019 mediante la clasificación de Robson. RESULTADOS: Se han analizado 1113 nacimientos con una tasa de cesárea del 25.3%. El grupo que más contribuyó al total de cesáreas realizadas, con un 34.4%, fue el 2A (nulíparas con feto único en presentación cefálica, de 37 semanas o más de embarazo, que iniciaron el parto mediante inducción). En segundo lugar, el grupo 5 (multíparas con al menos una cesárea previa, con un feto único en presentación cefálica, de 37 semanas o más de embarazo), con un 20.1%. Las inducciones en nulíparas multiplican por tres la tasa de cesárea respecto a las nulíparas que inician el trabajo de parto de manera espontánea. CONCLUSIONES: La clasificación de Robson es una herramienta que permite clasificar y analizar de manera sencilla los grupos en los que implantar medidas para reducir el número de cesáreas realizadas. Analizar las indicaciones de inducción y revisar los protocolos de actuación podría suponer una disminución sustancial en la tasa de cesáreas en nuestro centro.

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Se realizó un analisis de la tasa de cesáreas en dos maternidades públicas de referencia de Uruguay (Hospital de Clínicas y Centro Hospitalario Pereira Rossell) utilizando la clasificación de Robson para compararlas entre sí, mediante un estudio observacional, descriptivo, retrospectivo y transversal en un periodo de 10 años y 10 meses (2009-2019). Se analizaron 85.526 nacimientos (7.685 (8,9%) en el Clínicas vs 77.841 (91.1%) Pereira Rossell). El porcentaje de cesáreas por año en el Clínicas fue 49,2% ± 5 vs 29,3% ± 3 en Pereira Rossell. Los grupos de Robson más prevalentes fueron 1, 5A y 10 en el Clínicas vs 3, 1 y 5A en Pereira Rossell. En ambos centros los grupos con mayor contribución relativa a la tasa global de cesáreas fueron: 5A, 10 y 1. Ambos centros presentan un aumento en la tasa de cesárea en la última década, pese a que se asisten poblaciones dispares entre cada uno de ellos. Se debe seguir buscando estrategias que ayuden a reducir la tasa de cesáreas principalmente en pacientes sin cesáreas anteriores o con una única cesárea previa, en caso de no presentan contraindicaciones para el parto vaginal.

An analysis of the caesarean section rate was carried out in two reference public maternity wards in Uruguay (Hospital de Clínicas and Centro Hospitalario Pereira Rossell) using Robson's classification to compare them with each other, through an observational, descriptive, retrospective and cross-sectional study in a period 10 years and 10 months (2009-2019). 85,526 births were analyzed (7,685 (8.9%) in the Clinics vs 77,841 (91.1%) Pereira Rossell). The percentage of caesarean sections per year in the Clinics was 49.2% ± 5 vs 29.3% ± 3 in Pereira Rossell. The most prevalent Robson groups were 1, 5A and 10 in the Clinicas vs 3, 1 and 5A in Pereira Rossell. In both centers, the groups with the highest relative contribution to the overall rate of cesarean sections were: 5A, 10 and 1. Both centers show an increase in the rate of cesarean section in the last decade, despite the fact that different populations are attended between each of them. Strategies should continue to be sought to help reduce the rate of cesarean sections, mainly in patients without previous cesarean sections or with a single previous cesarean section, if they do not present contraindications for vaginal delivery.

Foi realizada análise da taxa de cesárea em duas maternidades públicas de referência do Uruguai (Hospital de Clínicas e Centro Hospitalario Pereira Rossell), utilizando a classificação de Robson para compará-las, por meio de estudo observacional, descritivo, retrospectivo e transversal. em um período de 10 anos e 10 meses (2009-2019). Foram analisados 85.526 partos (7.685 (8,9%) nas Clínicas vs 77.841 (91,1%) Pereira Rossell). A porcentagem de cesarianas por ano nas Clínicas foi de 49,2% ± 5 vs 29,3% ± 3 em Pereira Rossell. Os grupos de Robson mais prevalentes foram 1, 5A e 10 nas Clínicas vs 3, 1 e 5A em Pereira Rossell. Em ambos os centros, os grupos com maior contribuição relativa para a taxa global de cesárea foram: 5A, 10 e 1. Ambos os centros apresentam aumento da taxa de cesárea na última década, apesar de diferentes populações serem atendidas entre cada um deles. Estratégias devem continuar a ser buscadas para ajudar a reduzir a taxa de cesárea, principalmente em pacientes sem cesárea anterior ou com cesárea única, se não apresentarem contra-indicações para parto normal.

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Abstract Objective To analyze and compare the frequency of cesarean sections and vaginal deliveries through the Robson Classification in pregnant women attended at a tertiary hospital in two different periods. Methods Cross-sectional, retrospective study of birth records, comprising 4,010 women, conducted from January 2014 to December 2015 in the only public regional referral hospital for the care of high- risk pregnancies, located in Southern Brazil. Results The overall cesarean section rate reached 57.5% and the main indication was the existence of a previous uterine cesarean scar. Based on the Robson Classification, groups 5 (26.3%) and 10 (17.4%) were the most frequent ones. In 2015, there was a significant increase in the frequency of groups 1 and 3 (p < 0.001), when compared with the previous year, resulting in an increase in the number of vaginal deliveries (p < 0.0001) and a reduction in cesarean section rates. Conclusion The Robson Classification proved to be a useful tool to identify the profile of parturients and the groups with the highest risk of cesarean sections in different periods in the same service. Thus, it allowsmonitoring in a dynamic way the indications and delivery routes and developing actions to reduce cesarean rates according to the characteristics of the pregnant women attended.

Resumo Objetivo Analisar e comparar a frequência de partos cesáreos e vaginais através da classificação de Robson em gestantes atendidas em um hospital terciário em dois períodos distintos. Métodos Estudo transversal retrospectivo de registros de nascimento, compreendendo 4.010 mulheres, realizado de janeiro de 2014 a dezembro de 2015 no único hospital público de referência regional para atendimento de gestações de alto risco, localizado no sul do Brasil. A via de parto foi avaliada e as mulheres foram classificadas de acordo com a Classificação de Robson. Resultados A taxa geral de cesariana foi de 57,5% e a principal indicação foi a existência de cicatriz uterina por cesariana prévia. Quando aplicada a Classificação de Robson, os grupos mais frequentes foram o 5 (26,3%) e o 10 (17,4%). No ano de 2015, ocorreu um aumento significativo da frequência dos grupos 1 e 3 (p < 0,001), quando comparado ao ano anterior, resultando em aumento do número de partos vaginais (p < 0,0001) e redução das taxas de cesariana. Conclusão A Classificação de Robson mostra ser uma ferramenta útil para identificar o perfil das parturientes e os grupos com maior risco de cesariana em diferentes períodos em um mesmo serviço. Desta forma, permitemonitorar de forma dinâmica as indicações e vias de parto e desenvolver ações para redução das taxas de cesariana conforme as características das gestantes atendidas.

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OBJECTIVE: To evaluate the impact of pre-eclampsia on cesarean delivery by using the Robson classification. METHODS: A retrospective cross-sectional study including all women who delivered in a referral maternity hospital in southeast Brazil from January 2017 to February 2018. Women were classified into 1 of 10 Robson groups and then further subdivided into pre-eclampsia (PE) and non-PE (NPE) groups. Frequency of cesarean was determined for each group and compared by using χ2 and prevalence ratio. RESULTS: Overall, 3102 women were included, of whom 1578 (50.9%) delivered by cesarean. Classification in Robson group 5 was the most frequent among all women (n=727, 23.4%). In the PE group (n=258, 8.3%), group 10 was the most frequent classification (n=120, 46.5%); in NPE, Robson group 5 was the most frequency (n=682, 24.0%). Pre-eclampsia was associated with a higher occurrence of cesarean (77.5% vs 48.4%; prevalence ratio, 2.29; 95% confidence interval, 1.82-2.82), owing to higher rates in Robson groups 1, 5, and 10. CONCLUSION: Pre-eclampsia was associated with a higher occurrence of cesarean delivery in some Robson groups. Robson classification may be used to evaluate the impact of specific conditions at a facility level to help plan future interventions to optimize the use of cesarean.

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Objetivo: Comparar a taxa de cesarianas em duas maternidades públicas no estado do Rio de Janeiro, denominadas Maternidades A e B. Métodos: Foram extraídos das Declarações de Nascido Vivo (DNVs) dados sobre partos ocorridos no período de agosto a outubro de 2018, sendo realizada a classificação deles nos grupos de Robson. Foi possível identificar as características da população atendida e os grupos de maior representatividade que contribuíram para a taxa de cesarianas. Resultados: A idade média geral das puérperas em estudo foi de 25,7 anos. Verificou-se que ambas as maternidades apresentam taxas de cesarianas elevadas (a Maternidade A apresentou 46,4% e a Maternidade B, 34,4%), sendo a taxa geral do estudo de 40,1%. Analisando as características da população de ambas as maternidades, a maioria atendida na Maternidade A é representada por nulíparas com feto único e a termo (grupo 2 = 21,1%), e a Maternidade B é representada, em sua maioria, por multíparas, sem cesárea prévia, com feto único e a termo (grupo 3 = 22,9%). O grupo 2 foi o que mais contribuiu para a taxa geral de cesariana em ambas as maternidades, após o grupo de pacientes com pelo menos uma cesárea prévia (grupo 5), sendo 26% na Maternidade A e 33,1% na Maternidade B. Conclusão: Foi possível concluir que ambas as maternidades em estudo apresentaram taxas de cesarianas menores que a nacional, porém muito acima do recomendado pela Organização Mundial da Saúde (OMS). Ambas apresentaram valores consideráveis de preenchimento inadequado das DNVs.(AU)

Objective: To compare the cesarean section rate in two public maternity hospitals in the state of Rio de Janeiro, called maternity hospitals A and B. Methods: Data from Certificates of Live Births (DNVs) occurred during the period from August to October 2018 were extracted and their classification was performed in Robson's groups. Through this classification it was possible to identify the characteristics of the population served and the most representative groups that contributed to the cesarean section rate. Results: The overall average age of the puerperal women under study was 25.7 years. Both maternities showed higher caesarean section rates (Maternity A had a rate of 46.4% and Maternity B 34.4%), with the overall study rate of 40.1%. Analyzing the characteristics of the population of both maternities, the majority attended at Maternity A is represented by nulliparous women with single and full-term fetuses (group 2 = 21.1%), and Maternity B is mostly represented by multiparous women, without previous cesarean section, with single and full-term fetus (group 3 = 22.9%). It was group 2 that most contributed to the overall cesarean section rate after the group of patients with at least one previous cesarean section (group 5), being 26% in Maternity A and 33.1% in Maternity B. Conclusion: It was concluded that both maternity hospitals under study had caesarean section rates lower than the national rate, but much higher than recommended by World Health Organization (WHO). In addition, both presented considerable values of inadequate filling of DNVs.(AU)

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Abstract Objective To investigate the patterns of hospital births in the state of Rio de Janeiro (RJ), Brazil, between 2015 and 2016; considering the classification of obstetric characteristics proposed by Robson and the prenatal care index proposed by Kotelchuck. Methods Data obtained from the Information System on Live Births of the Informatics Department of the Brazilian Unified Health System (SINASC/DATASUS, in the Portuguese acronym) databases were used to group pregnant women relatively to the Robson classification. A descriptive analysis was performed for each Robson group, considering the variables: maternal age, marital status, schooling, parity, Kotelchuck prenatal adequacy index and gestational age. A logistic model estimated odds ratios (ORs) for cesarean sections (C-sections), considering the aforementioned variables. Results Out of the 456,089 live births in Rio de Janeiro state between 2015 and 2016, 391,961 records were retained, 60.3% of which were C-sections. Most pregnant women (58.6%) were classified in groups 5, 2 or 3. The percentage of C-sections in the Robson groups 1, 2, 3, 4, 5 and 8 was much higher than expected. Prenatal care proved to be inadequate for women who subsequently had a vaginal delivery, had an unfavorable family structure and a lower socioeconomic status (mothers without partners and with lower schooling), compared with those undergoing cesarean delivery. For a sameRobson group, the chance of C-section increases when maternal age rises (OR = 3.33 for 41-45 years old), there is the presence of a partner (OR = 1.81) and prenatal care improves (OR = 3.19 for "adequate plus"). Conclusion There are indications that in the state of RJ, from 2015 to 2016, many cesarean deliveries were performed due to nonclinical factors.

Resumo Objetivo Investigar os padrões dos partos hospitalares no estado do Rio de Janeiro (RJ), Brasil, entre 2015 e 2016, considerando a classificação de características obstétricas de Robson e a dos cuidados pré-natais proposta por Kotelchuck. Métodos Dados sistema de informações sobre nascidos vivos (SINASC) do departamento de informática do sistema único de saúde (DATASUS) foram utilizados para agrupar gestantes relativamente à classificação de Robson. Foi efetuada uma análise descritiva para cada grupo de Robson, considerando-se as variáveis idade materna, estado civil, escolaridade, paridade, o índice de Kotelchuck de adequação do pré-natal e a idade gestacional. Também foi realizado o cálculo de razão de chances (RC) para parto cesáreo, considerando-se um modelo logístico. Resultados Dos 456.089 nascimentos vivos ocorridos no RJ de 2015 a 2016, foram incluídos 391.961 registros, sendo 60,3% cesáreas, com maioria de gestantes (58,6%) nos grupos 5, 2 ou 3. O percentual de cesáreas nos grupos 1, 2, 3, 4, 5 e 8 foi bem superior ao sugerido pela literatura. Para gestantes de um mesmo grupo (controladas as demais características), a chance de cesárea se eleva quando aumenta a idade materna (RC = 3,33 para 41-45 anos), existe a presença de um companheiro (RC = 1,81), o nível de escolaridade é maior (RC = 3,11 para ≥ 12 anos) e o pré-natal é mais cuidadoso (RC= 3,19 para "adequado plus"). Conclusão Há indícios que no RJ, de 2015 a 2016, muitos partos cesáreos foram realizados sob influência de fatores extraclínicos.

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