Variations in intervention rates, without subsequent reductions in adverse outcomes, can indicate overuse. We studied variations in and associations between commonly used childbirth interventions and adverse outcomes, adjusted for population characteristics. In this multinational cross-sectional study, existing data on 4,729,307 singleton births at ≥37 weeks in 2013 from Finland, Sweden, Norway, Denmark, Iceland, Ireland, England, the Netherlands, Belgium, Germany (Hesse), Malta, the United States, and Chile were used to describe variations in childbirth interventions and outcomes. Numbers of births ranged from 3,987 for Iceland to 3,500,397 for the USA. Crude data were analysed in the Netherlands, or analysed data were shared with the principal investigator. Strict variable definitions were used and information on data quality was collected. Intervention rates were described for each country and stratified by parity. Uni- and multivariable analyses were performed, adjusted for population characteristics, and associations between rates of interventions, population characteristics, and outcomes were assessed using Spearman’s rank correlation coefficients. Considerable intercountry variations were found for all interventions, despite adjustments for population characteristics. Adjustments for ethnicity and body mass index changed odds ratios for augmentation of labour and episiotomy. Largest variations were found for augmentation of labour, pain relief, episiotomy, instrumental birth, and cesarean section (CS). Percentages of births at ≥42 weeks varied from 0.1% to 6.7%. Rates among nulliparous versus multiparous women varied from 56% to 80% versus 51% to 82% for spontaneous onset of labour; 14% to 36% versus 8% to 28% for induction of labour; 3% to 13% versus 7% to 26% for prelabour CS; 16% to 48% versus 12% to 50% for overall CS; 22% to 71% versus 7% to 38% for augmentation of labour; 50% to 93% versus 25% to 86% for any intrapartum pain relief, 19% to 83% versus 10% to 64% for epidural anaesthesia; 6% to 68% versus 2% to 30% for episiotomy in vaginal births; 3% to 30% versus 1% to 7% for instrumental vaginal births; and 42% to 70% versus 50% to 84% for spontaneous vaginal births. Countries with higher rates of births at ≥42 weeks had higher rates of births with a spontaneous onset (rho = 0.82 for nulliparous/rho = 0.83 for multiparous women) and instrumental (rho = 0.67) and spontaneous (rho = 0.66) vaginal births among multiparous women and lower rates of induction of labour (rho = −0.71/−0.66), prelabour CS (rho = −0.61/−0.65), overall CS (rho = −0.61/−0.67), and episiotomy (multiparous: rho = −0.67). Variation in CS rates was mainly due to prelabour CS (rho = 0.96). Countries with higher rates of births with a spontaneous onset had lower rates of emergency CS (nulliparous: rho = −0.62) and higher rates of spontaneous vaginal births (multiparous: rho = 0.70). Prelabour and emergency CS were positively correlated (nulliparous: rho = 0.74). Higher rates of obstetric anal sphincter injury following vaginal birth were found in countries with higher rates of spontaneous birth (nulliparous: rho = 0.65). In countries with higher rates of epidural anaesthesia (nulliparous) and spontaneous births (multiparous), higher rates of Apgar score < 7 were found (rhos = 0.64). No statistically significant variation was found for perinatal mortality. Main limitations were varying quality of data and missing information. Considerable intercountry variations were found for all interventions, even after adjusting for population characteristics, indicating overuse of interventions in some countries. Multivariable analyses are essential when comparing intercountry rates. Implementation of evidence-based guidelines is crucial in optimising intervention use and improving quality of maternity care worldwide.

Background: Antenatal care can play an important role in the prevention of preterm birth. Evaluation of antenatal care is usually based on the number of visits rather than the content of care, using tools such as the Adequacy of Prenatal Care Use index. This article presents an analysis of the relation between specific elements of antenatal care and the risk of preterm birth compared with considering the number of visits only. Methods: A prospective cohort study was conducted in the Brussels Metropolitan Region. In all, 333 women were consecutively recruited at the beginning of their antenatal care trajectory and followed until birth. Information on timing and content for every visit was recorded by structured interview. A new tool was developed to measure the antenatal care trajectory, which included Content and Timing of care in Pregnancy (CTP). Odds ratios (OR) (adjusted and unadjusted) for preterm birth were calculated for the Adequacy of Prenatal Care Use and CTP model. Results: The number of visits alone was not associated with preterm birth. In contrast, a significant association was found between the content and timing of care and preterm birth. Compared with the CTP lowest (‘inadequate’) category, women in the CTP ‘sufficient’ (OR 0.30; 95% CI 0.09–0.94) and CTP ‘appropriate’ (OR 0.21; 95% CI 0.06–0.68) category had a lower risk. Conclusions: This study suggests that measurement of the content and timing of care of antenatal care using the new CTP tool is a better assessment of the risk of preterm birth than assessment of the number of antenatal visits alone.

Antenatal care has a positive effect on pregnancy, both clinically and psychologically, but consensus about the optimal number of antenatal visits is lacking. This study aims to provide insight into the dynamics of the number of antenatal visits a woman receives. Independent effects of predisposing, enabling and pregnancy-related determinants are examined.

Background: Continuity of care (COC) is essential for high-quality patient care in the perinatal period. Insights in the effects of COC models on patient outcomes are important to direct perinatal healthcare organization. To our knowledge, no previous review has listed the effects of COC on the physical and mental health of mother and child in the postnatal period. Methods: A search was conducted in four databases (PubMed, Web of Knowledge, CENTRAL and CINAHL), from 2000 to 2018. Studies were included if: participants were healthy mothers or newborns with a gestational age between 37–42 weeks; they covered the perinatal period and aimed to measure breastfeeding or any outcome related to the maternal/newborn physical or mental health. At least one of the three COC types (management, informational and relationship) was identified in the intervention. The methodological quality was assessed. Results: Ten articles were included. COC is mostly present in the identified care models. The effects of COC on the outcomes of mother and child in the postnatal period seem mostly to be positive, although not always significant. The relation between COC and the outcomes can be influenced by confounding factors, like the socio-economic status of the included population. Interventions with COC during pregnancy appear to be more effective for all the studied outcome factors. Conclusion: COC as management, relational and informational continuity starting antenatal has the most impact on the postnatal outcomes of mother and child.

To compare synthetic oxytocin infusion regimens used during labour, calculate the International Units (IU) escalation rate and total amount of IU infused over eight hours. Observational study Twelve countries, eleven European and South Africa. National, regional or institutional-level regimens on oxytocin for induction and augmentation labour Data on oxytocin IU dose, infusion fluid amount, start dose, escalation rate and maximum dose were collected. Values for each regimen were converted to IU in 1000ml diluent. One IU corresponded to 1.67μg for doses provided in grams/micrograms. IU hourly dose increase rates were based on escalation frequency. Cumulative doses and total IU amount infused were calculated by adding the dose administered for each previous hour. Main Outcome Measures Oxytocin IU dose infused Data were obtained on 21 regimens used in 12 countries. Details on the start dose, escalation interval, escalation rate and maximum dose infused were available from 16 regimens. Starting rates varied from 0.06 IU/hour to 0.90 IU/hour, and the maximum dose rate varied from 0.90 IU/hour to 3.60 IU/hour. The total amount of IU oxytocin infused, estimated over eight hours, ranged from 2.38 IU to 27.00 IU, a variation of 24.62 IU and an 11-fold difference. Current variations in oxytocin regimens for induction and augmentation of labour are inexplicable. It is crucial that the appropriate minimum infusion regimen is administered because synthetic oxytocin is a potentially harmful medication with serious consequences for women and babies when inappropriately used. Estimating the total amount of oxytocin IU received by labouring women, alongside the institution’s mode of birth and neonatal outcomes, may deepen our understanding and be the way forward to identifying the optimal infusion regimen.

Current measures of antenatal care use are limited to initiation of care and number of visits. This study aimed to describe the development and application of a tool to assess the adequacy of the content and timing of antenatal care.