A Swedish register-based study exploring primary postpartum hemorrhage in 405 936 full term vaginal births between 2005 and 2015.

Objective: To explore diagnoses of postpartum haemorrhage following vaginal birth, in relation to socio-demographic and obstetrical data from women who gave birth at term, in Sweden, during the years 2005-2015.

Study Design: A register-based cohort study was carried out, describing and comparing socio-demographic variables, obstetric variables and infant variables in 52 367 cases of diagnosed postpartum haemorrhage compared to 353 569 controls without a postpartum haemorrhage diagnosis. Postpartum hemorrhage was identified in The Swedish Medical Birth Register by ICD-10 code O72.

Mode of first delivery and severe maternal complications in the subsequent pregnancy.

Introduction: Severe obstetric complications increase with the number of previous cesarean deliveries. In the Nordic countries most women have two children. We present the risk of severe obstetric complications at the delivery following a first elective or emergency cesarean and the risk by intended mode of second delivery.

National Rates of Uterine Rupture are not Associated with Rates of Previous Caesarean Delivery: Results from the Nordic Obstetric Surveillance Study.

Background: Previous caesarean delivery and intended mode of delivery after caesarean are well-known individual risk factors for uterine rupture. We examined if different national rates of uterine rupture are associated with differences in national rates of previous caesarean delivery and intended mode of delivery after a previous caesarean delivery.

Methods: This study is an ecological study based on data from a retrospective cohort in the Nordic countries.

Emergency peripartum hysterectomy: results from the prospective Nordic Obstetric Surveillance Study (NOSS).

Objective: To assess the prevalence and risk factors of emergency peripartum hysterectomy.

Design: Nordic collaborative study.

Population: 605 362 deliveries across the five Nordic countries.

The Nordic Obstetric Surveillance Study: a study of complete uterine rupture, abnormally invasive placenta, peripartum hysterectomy, and severe blood loss at delivery.

Objective: To assess the rates and characteristics of women with complete uterine rupture, abnormally invasive placenta, peripartum hysterectomy, and severe blood loss at delivery in the Nordic countries.

Design: Prospective, Nordic collaboration.

Setting: The Nordic Obstetric Surveillance Study (NOSS) collected cases of severe obstetric complications in the Nordic countries from April 2009 to August 2012.

The Nordic medical birth registers--a potential goldmine for clinical research.

The Nordic medical birth registers have long been used for valuable clinical research. Their collection of data for more than four decades offers unusual possibilities for research across generations. At the same time, serum and blotting paper blood samples have been stored from most neonates.

Satisfaction with a modified form of in-hospital birth center care compared with standard maternity care.

Background: For safety reasons an in-hospital birth center was replaced by a modified form of birth center care with the same medical guidelines and equipment as in standard care. The aim of this study was to investigate women's and men's satisfaction with modified care compared with standard care.

Methods: Women in both groups gave birth from July 2007 to July 2008.

Infibulated women have an increased risk of anal sphincter tears at delivery: a population-based Swedish register study of 250 000 births.

Objective: To investigate the risk for anal sphincter tears (AST) in infibulated women.

Design: Population-based cohort study.

Setting: Nationwide study in Sweden.

Factors associated with antenatal care adequacy in rural and urban contexts-results from two health and demographic surveillance sites in Vietnam.

Background: Antenatal Care (ANC) is universally considered important for women and children. This study aims to identify factors, demographic, social and economic, possibly associated with three ANC indicators: number of visits, timing of visits and content of services. The aim is also to compare the patterns of association of such factors between one rural and one urban context in northern Vietnam.

Urban - rural disparities in antenatal care utilization: a study of two cohorts of pregnant women in Vietnam.

Background: The use of antenatal care (ANC) varies between countries and in different settings within each country. Most previous studies of ANC in Vietnam have been cross-sectional, and conducted in rural areas before the year 2000. This study aims to compare the pattern and the adequacy of ANC used in rural and urban Vietnam following two cohorts of pregnant women.

In-hospital birth center with the same medical guidelines as standard care: a comparative study of obstetric interventions and outcomes.

Background: A challenge of obstetric care is to optimize maternal and infant health outcomes and the mother's experience of childbirth with the least possible intervention in the normal process. The aim of this study was to investigate the effects of modified birth center care on obstetric procedures during delivery and on maternal and neonatal outcomes.

Methods: In a cohort study 2,555 women who signed in for birth center care during pregnancy were compared with all 9,382 low-risk women who gave birth in the standard delivery ward in the same hospital from March 2004 to July 2008.

Increasing incidence of anal sphincter tears among primiparas in Sweden: a population-based register study.

Background: The aim of this study was to examine the incidence and risk factors for anal sphincter tears (ASTs) at delivery.

Methods: A national population-based study was conducted with data from the Medical Birth Register including all primiparas with singleton pregnancy, who gave birth vaginally in Sweden from 1994 to 2004 (n=365,886). Women with a third and fourth degree AST were compared with those who gave birth during the same period without incurring such tears.

Birth centre care over a 10-year period: infant morbidity during the first month after birth.

Aim: To study morbidity during the first month of life affecting infants of mothers booked for birth centre care during pregnancy.

Methods: 3238 live single-born infants whose mothers were admitted to an in-hospital birth centre, located at South Hospital in Stockholm, between 1989 and 2000 were compared with 179,502 infants whose mothers received standard maternity care in the Stockholm region during the same period, and who fulfilled the same medical inclusion criteria as those of the birth centre group. Information on other exposures and outcomes was collected from the Swedish Medical Birth and Hospital Discharge Registers.

Safety of birth centre care: perinatal mortality over a 10-year period.

Objective: To study perinatal mortality in women booked for birth centre care during pregnancy.

Design: Retrospective cohort study.

Setting: In-hospital birth centre and standard maternity care in Stockholm.

Does birth center care during a woman's first pregnancy have any impact on her future reproduction?

Background: Women's experiences of childbirth may affect their future reproduction, and the model of care affects their experiences, suggesting that a causal link may exist between model of care and future reproduction. The study objective was to examine whether the birth center model of care during a woman's first pregnancy affects whether or not she has a second baby, and on the spacing to the next birth.

Methods: Between October 1989 and July 1993, a total of 1860 women at low medical risk in early pregnancy, who participated in a randomized controlled trial of in-hospital birth center care versus standard care, gave birth.

Does a traumatic birth experience have an impact on future reproduction?

Objective: To investigate whether women's experiences of their first birth affects future reproduction.

Design: Prospective cohort study.

Setting: South Hospital, Stockholm, Sweden.