Is obstetrics safe in small hospitals? Evidence from New Zealand's regionalised perinatal system

The impact of level of neonatal care provision on outcomes for preterm babies born between 27 and 31 weeks of gestation, or with a birth weight between 1000 and 1500 g: a review of the literature

OBJECTIVE

There is evidence that birth and care in a maternity service associated with a neonatal intensive care unit (NICU) is associated with improved survival in preterm babies born at <27 weeks of gestation. We conducted a systematic review to address whether similar gains manifested in babies born between 27+0 and 31+6 weeks (hereafter 27 and 31 weeks) of gestation, or in those with a birth weight between 1000 and 1500 g.

METHODS

We searched Embase, Medline and CINAHL databases for studies comparing outcomes for babies born between 27 and 31 weeks or between 1000 and 1500 g birth weight, based on designation of the neonatal unit where the baby was born or subsequently cared for (NICU vs non-NICU setting). A modified QUIPS (QUality In Prognostic Studies) tool was used to assess quality.

RESULTS

Nine studies compared outcomes for babies born between 27 and 31 weeks of gestation and 11 studies compared outcomes for babies born between 1000 and 1500 g birth weight. Heterogeneity in comparator groups, birth locations, gestational age ranges, timescale for mortality reporting, and description of morbidities facilitated a narrative review as opposed to a meta-analysis.

CONCLUSION

Due to paucity of evidence, significant heterogeneity and potential for bias, we were not able to answer our question-does place of birth or care affect outcomes for babies born between 27 and 31 weeks? This supports the need for large-scale research to investigate place of birth and care for babies born in this gestational age range.

Patient perspectives on loss of local obstetrical services in rural northern Minnesota

BACKGROUND

Obstetrical care has been declining in rural communities. We examined patient choices and perspectives from two rural northern Minnesota communities who lost their local obstetrical services in July 2015. Our purpose was to characterize obstetrical use patterns through the years leading to and following the closure and to explore the effects of the closure on these communities.

METHODS

Information introducing the project and providing access to the survey was mailed to women who received prenatal care in the communities of interest. Responses were analyzed quantitatively and qualitatively.

FINDINGS

Two hundred and one participants completed the survey with 356 deliveries reported from 1990 to 2016. Before the closure, there was a trend toward an increasing percentage of women electing regional delivery (P < .001); however, women were still 1.6 times more likely to choose local (62%) than regional (38%) delivery. Reasons for choosing delivery location changed over the decades. While birth experiences remained positive or extremely positive, anxiety about getting to the hospital rose 10-fold from 1990 to 2016 (5%-51%, P < .001). Women voiced substantial concern about the lack of local obstetrical services. Qualitative analysis revealed significant negative emotional reactions and concerns for the consequences of this loss for the viability of their rural communities.

CONCLUSIONS

Choices and opinions about obstetric care have significantly changed from 1990 to 2016 in rural Minnesota. Understanding these changes can help address shifting risks and costs to rural communities here and elsewhere in an effort to support and sustain healthy, viable rural communities.

Evaluating Maternity Units: a prospective cohort study of freestanding midwife-led primary maternity units in New Zealand-clinical outcomes

OBJECTIVE

To compare maternal and neonatal birth outcomes and morbidities associated with the intention to give birth in a freestanding primary level midwife-led maternity unit (PMU) or tertiary level obstetric-led maternity hospital (TMH) in Canterbury, Aotearoa/New Zealand.

DESIGN

Prospective cohort study.

PARTICIPANTS

407 women who intended to give birth in a PMU and 285 women who intended to give birth at the TMH in 2010-2011. All of the women planning a TMH birth were 'low risk', and 29 of the PMU cohort had identified risk factors.

PRIMARY OUTCOMES

Mode of birth, Apgar score of less than 7 at 5 min and neonatal unit admission.

SECONDARY OUTCOMES

labour onset, analgesia, blood loss, third stage of labour management, perineal trauma, non-pharmacological pain relief, neonatal resuscitation, breastfeeding, gestational age at birth, birth weight, severe morbidity and mortality.

RESULTS

Women who planned a PMU birth were significantly more likely to have a spontaneous vaginal birth (77.9%vs62.3%, adjusted OR (AOR) 1.61, 95% CI 1.08 to 2.39), and significantly less likely to have an instrumental assisted vaginal birth (10.3%vs20.4%, AOR 0.59, 95% CI 0.37 to 0.93). The emergency and elective caesarean section rates were not significantly different (emergency: PMU 11.6% vs TMH 17.5%, AOR 0.88, 95% CI 0.55 to 1.40; elective: PMU 0.7% vs TMH 2.1%, AOR 0.34, 95% CI 0.08 to 1.41). There were no significant differences between the cohorts in rates of 5 min Apgar score of <7 (2.0%vs2.1%, AOR 0.82, 95% CI 0.27 to 2.52) and neonatal unit admission (5.9%vs4.9%, AOR 1.44, 95% CI 0.70 to 2.96). Planning to give birth in a primary unit was associated with similar or reduced odds of intrapartum interventions and similar odds of all measured neonatal well-being indicators.

CONCLUSIONS

The results of this study support freestanding midwife-led primary-level maternity units as physically safe places for well women to plan to give birth, with these women having higher rates of spontaneous vaginal births and lower rates of interventions and their associated morbidities than those who planned a tertiary hospital birth, with no differences in neonatal outcomes.

Safety of labour and delivery following closures of obstetric services in small community hospitals

BACKGROUND

In recent decades, many smaller hospitals in British Columbia, Canada, have stopped providing planned obstetric services. We examined the effect of these service closures on the labour and delivery outcomes of pregnant women living in affected communities.

METHODS

We used maternal postal codes to identify delivery records (1998-2014) of women residing in a community affected by service closure. The records were obtained from the British Columbia Perinatal Data Registry. We examined the effect of the closures using a within-communities fixed-effects framework and included similar-sized communities without service closures to control for underlying time trends. The primary outcome was a previously published composite measure of labour and delivery safety, the Adverse Outcome Index, which includes adverse events such as birth injury and unanticipated operative procedures, and includes weights for severity of adverse events. Secondary outcomes included maternal or newborn transfer, and use of obstetric interventions.

RESULTS

We found little evidence that closure of planned obstetric services affected the risk of composite adverse maternal-newborn outcome (-0.4 excess adverse events per 100 deliveries, 95% confidence interval [CI] -2.0 to 1.1), or most other secondary outcomes. The severity of composite outcome events decreased following the closures (rate ratio 0.58, 95% CI 0.36 to 0.89). Closures were associated with increases in use of epidural analgesia (3.4 excess events per 100 deliveries, 95% CI 0.4 to 6.3) and length of antepartum stay (0.6 h, 95% CI 0.1 to 1.0 h).

INTERPRETATION

Closure of planned obstetric services in low-volume hospitals was not associated with an increase or decrease in frequency of adverse events during labour and delivery.

Outcomes of deliveries by family physicians or obstetricians: a population-based cohort study using an instrumental variable

BACKGROUND

Previous research has suggested that obstetric outcomes are similar for deliveries by family physicians and obstetricians, but many of these studies were small, and none of them adjusted for unmeasured selection bias. We compared obstetric outcomes between these provider types using an econometric method designed to adjust for unobserved confounding.

METHODS

We performed a retrospective population-based cohort study of all Canadian (except Quebec) hospital births with delivery by family physicians and obstetricians at more than 20 weeks gestational age, with birth weight greater than 500 g, between Apr. 1, 2006, and Mar. 31, 2009. The primary outcomes were the relative risks of in-hospital perinatal death and a composite of maternal mortality and major morbidity assessed with multivariable logistic regression and instrumental variable-adjusted multivariable regression.

RESULTS

After exclusions, there were 3600 perinatal deaths and 14,394 cases of maternal morbidity among 799,823 infants and 793,053 mothers at 390 hospitals. For deliveries by family physicians v. obstetricians, the relative risk of perinatal mortality was 0.98 (95% confidence interval [CI] 0.85-1.14) and of maternal morbidity was 0.81 (95% CI 0.70-0.94) according to logistic regression. The respective relative risks were 0.97 (95% CI 0.58-1.64) and 1.13 (95% CI 0.65-1.95) according to instrumental variable methods.

INTERPRETATION

After adjusting for both observed and unobserved confounders, we found a similar risk of perinatal mortality and adverse maternal outcome for obstetric deliveries by family physicians and obstetricians. Whether there are differences between these groups for other outcomes remains to be seen.

Regionalization and local hospital closure in Norwegian maternity care--the effect on neonatal and infant mortality

OBJECTIVE

To study whether neonatal and infant mortality, after adjustments for differences in case mix, were independent of the type of hospital in which the delivery was carried out.

DATA

The Medical Birth Registry of Norway provided detailed medical information for all births in Norway.

STUDY DESIGN

Hospitals were classified into two groups: local hospitals/maternity clinics versus central/regional hospitals. Outcomes were neonatal and infant mortality. The data were analyzed using propensity score weighting to make adjustments for differences in case mix between the two groups of hospitals. This analysis was supplemented with analyses of 13 local hospitals that were closed. Using a difference-in-difference approach, the effects that these closures had on neonatal and infant mortality were estimated.

PRINCIPAL FINDING

Neonatal and infant mortality were not affected by the type of hospital where the delivery took place.

CONCLUSION

A regionalized maternity service does not lead to increased neonatal and infant mortality. This is mainly because high-risk deliveries were identified well in advance of the birth, and referred to a larger hospital with sufficient perinatal resources to deal with these deliveries.

Perinatal health inequalities and accessibility of maternity services in a rural French region: closing maternity units in Burgundy

Maternity unit closures in France have increased travel time for pregnant women in rural areas. We assessed the impact of travel time to the closest unit on perinatal outcomes and care in Burgundy using multilevel analyses of data on deliveries from 2000 to 2009. A travel time of 30min or more increased risks of fetal heart rate anomalies, meconium-stained amniotic fluid, out-of-hospital births, and pregnancy hospitalizations; a positive but non-significant gradient existed between travel time and perinatal mortality. The effects of long travel distances on perinatal outcomes and care should be factored into closure decisions.

Cultures of risk and their influence on birth in rural British Columbia

BACKGROUND

A significant number of Canadian rural communities offer local maternity services in the absence of caesarean section back-up to parturient residents. These communities are witnessing a high outflow of women leaving to give birth in larger centres to ensure immediate access to the procedure. A minority of women choose to stay in their home communities to give birth in the absence of such access. In this instance, decision-making criteria and conceptions of risk between physicians and parturient women may not align due to the privileging of different risk factors.

METHODS

In-depth qualitative interviews and focus groups with 27 care providers and 43 women from 3 rural communities in B.C.

RESULTS

When birth was planned locally, physicians expressed an awareness and acceptance of the clinical risk incurred. Likewise, when birth was planned outside the local community, most parturient women expressed an awareness and acceptance of the social risk incurred due to leaving the community.

CONCLUSIONS

The tensions created by these contrasting approaches relate to underlying values and beliefs. As such, an awareness can address the impasse and work to provide a resolution to the competing prioritizations of risk.

The association between hospital obstetrical volume and maternal postpartum complications

OBJECTIVE

The purpose of this study was to examine the relationship between delivery volume and maternal complications.

STUDY DESIGN

We used administrative data to identify women who had been admitted for childbirth in 2006. Hospitals were stratified into deciles that were based on delivery volume. We compared composite complication rates across deciles.

RESULTS

We evaluated 1,683,754 childbirths in 1045 hospitals. Decile 1 and 2 hospitals had significantly higher rates of composite complications than decile 10 (11.8% and 10.1% vs 8.5%, respectively; P < .0001). Decile 9 and 10 hospitals had modestly higher composite complications as compared with decile 6 (8.8% and 8.5% vs 7.6%, respectively; P < .0001). Sixty percent of decile 1 and 2 hospitals were located within 25 miles of the nearest greater volume hospital.

CONCLUSION

Women who deliver at very low-volume hospitals have higher complication rates, as do women who deliver at exceedingly high-volume hospitals. Most women who deliver in extremely low-volume hospitals have a higher volume hospital located within 25 miles.

Should births be centralised in higher level hospitals? Experiences from regionalised health care in Finland

OBJECTIVE

To describe: (i) trends in centralisation and unplanned out-of-hospital births; (ii) perinatal mortality by place of birth; and (iii) health and birth outcomes in areas served by hospitals of different levels.

DESIGN

Cross-sectional analysis of medical birth register data.

SETTING

Finland, from 1991 to 2008, and Uusimaa district from 2004 to 2008.

POPULATION

All births.

METHODS

In the hospital-based analysis, birthweight was adjusted by logistic regression. In the area-based analysis results were calculated according to where women lived, grouping them into areas served by different hospitals. The mother's background characteristics were adjusted for by logistic regression.

MAIN OUTCOME MEASURES

Place of birth, unplanned out-of-hospital birth, perinatal mortality, newborn outcomes, and birth procedures.

RESULTS

The number of birthing hospitals declined, the mean number of births per hospital increased, and more births, particularly high-risk births, occurred in university hospitals. Unplanned out-of-hospital births were rare, and their numbers increased in the 2000s, but regional differences declined. Perinatal mortality was higher in the university hospitals than in other hospitals, but after adjusting for birthweight, it was lower. Among children weighing more than 2500 g, mortality was similar for all hospital levels. In out-of-hospital births, perinatal mortality was much higher than in other children. The area-based analysis did not systematically show better or worse results for the areas served by lower level hospitals: after adjusting for the background characteristics of the mothers, all differences were found to be small.

CONCLUSIONS

The health and service data do not support the need to close down small hospitals in a regionalised system where there is a referral system that functions well.

The Reality of Resistance: The Experiences of Rural Parturient Women

The closure of many local maternity services has given rise to contemporary realities of care for many rural parturient women in Canada, which, in turn, determines their experience of birth. To date, we do not have an understanding of the realities influencing the birthing experiences of rural parturient women. This qualitative investigation explored these issues with women from four rural British Columbian communities through semistructured interviews and focus groups. Women in this study articulated four realities that influenced the nature of their experience of birth, including geographic realities, the availability of local health service resources, and the influence of parity and financial implications of leaving the community to give birth. When these realities were incongruent with participants' needs in birth, participants developed strategies of resistance to mitigate the dissonance. Strategies included trying to time the birth at the referral hospital by undergoing an elective induction and seasonal timing of pregnancies to minimize the risk of winter travel. Some women showed up at the local hospital in an advanced stage of labor to avoid transfer to a referral center, or in some instances, had an unassisted homebirth.

The geography of belonging: the experience of birthing at home for First Nations women

The number of rural hospitals offering maternity care in British Columbia has significantly declined since 2000, mirroring trends of closures and service reductions across Canada. The impact on Aboriginal women is significant, contributing to negative maternal and newborn health and social outcomes. The present qualitative case study explored the importance of local birth for Aboriginal women from a remote BC community after the closure of local maternity services. Data collection consisted of 12 interviews and 55 completed surveys. The average participant age was 32 years old at the time of the study. From the perspective of losing local services, participants expressed the importance of local birth in reinforcing the attributes that contributed to their identities, including the importance of community and kinship ties and the strength of ties to their traditional territory.

Outcomes of maternity care services in Alberta, 1999 and 2000: a population-based analysis

OBJECTIVE

To evaluate the maternal and perinatal outcomes of Alberta's regionalized system of care. In particular, to compare the outcomes of communities with limited or no local intrapartum care with those of regional and tertiary care centres.

METHODS

We conducted a population-based retrospective study of all Alberta deliveries in 1999 and 2000. Maternal outcome measures were rates of patient outflow, induction of labour, Caesarean section (CS), and participation in vaginal birth after Caesarean section (VBAC). The perinatal outcome measure was the perinatal loss rate (mortality rate plus stillbirth rate). Rural maternity care programs were categorized as follows: no elective local maternity care (level 0), local maternity care without local CS capabilities (level IA), and local maternity care with local CS capabilities (level IC).

RESULTS

Communities offering intrapartum care without local CS capability delivered 22.1% of their maternity population. This proportion increased to 70.1% if the communities had local CS capabilities. Although patient outflow was associated with parity, risk, local services, and distance to an urban centre, there was a large unexplained outflow difference between communities with similar service levels. More limited local maternity care services and higher outflow rates were associated with higher rates of induction of labour. Rates for CS, participation in VBAC, and perinatal loss were not significantly different for different types of maternity care programs other than a lower CS rate for residents in type IA communities compared with other communities (18% vs. 20%).

CONCLUSION

The principal consequences of a limited scope of local maternity care services for rural women is an increased rate of induction of labour and, if they live in a community that delivers babies without local CS capability (IA), a lower CS rate. These category IA communities, with patient outflows of 78%, are largely unsuccessful in having women deliver locally, but women from these communities have a lower rate of CS wherever they deliver. The 18 rural Alberta maternity care programs where patient outflow is over 67% may not be sustainable.

The impact on neonatal mortality of shifting childbirth services among levels of hospitals: Taiwan's experience

Background

There is considerable discussion surrounding whether advanced hospitals provide better childbirth care than local community hospitals. This study examines the effect of shifting childbirth services from advanced hospitals (i.e., medical centers and regional hospitals) to local community hospitals (i.e., clinics and district hospitals). The sample population was tracked over a seven-year period, which includes the four months of the 2003 severe acute respiratory syndrome (SARS) epidemic in Taiwan. During the SARS epidemic, pregnant women avoided using maternity services in advanced hospitals. Concerns have been raised about maintaining the quality of maternity care with increased demands on childbirth services in local community hospitals. In this study, we analyzed the impact of shifting maternity services among hospitals of different levels on neonatal mortality and maternal deaths.

Methods

A population-based study was conducted using data from Taiwan's National Health Insurance annual statistics of monthly county neonatal morality rates. Based on a pre-SARS sample from January 1998 to December 2002, we estimated a linear regression model which included "trend," a continuous variable representing the effect of yearly changes, and two binary variables, "month" and "county," controlling for seasonal and county-specific effects. With the estimated coefficients, we obtained predicted neonatal mortality rates for each county-month. We compared the differences between observed mortality rates of the SARS period and predicted rates to examine whether the shifting in maternity services during the SARS epidemic significantly affected neonatal mortality rates.

Results

With an analysis of a total of 1,848 observations between 1998 and 2004, an insignificantly negative mean of standardized predicted errors during the SARS period was found. The result of a sub-sample containing areas with advanced hospitals showed a significant negative mean of standardized predicted errors during the SARS period. These findings indicate that despite increased use of local community hospitals, neonatal mortality during the SARS epidemic did not increase, and even decreased in areas with advanced hospitals.

Conclusion

An increased use of maternity services in local community hospitals occurred during the SARS epidemic in Taiwan. However, we observed no increase in neonatal and maternity mortality associated with these increased demands on local community hospitals.

Planning the optimal level of local maternity service for small rural communities: a systems study in British Columbia

OBJECTIVES

To develop and apply a population isolation model to define the appropriate level of maternity service for rural communities in British Columbia, Canada.

METHODS

Iterative, mathematical model development supported by extensive multi-methods research in 23 rural and isolated communities in British Columbia, Canada, which were selected for representative variance in population demographics and isolation. Main outcome measure was the Rural Birth Index (RBI) score for 42 communities in rural British Columbia.

RESULTS

In rural communities with 1h catchment populations of under 25,000 the RBI score matched the existing level of service in 33 of 42 (79%) communities. Inappropriate service for the rural population was postulated and supported by qualitative data available on 6 of the remaining 9 communities.

CONCLUSIONS

The RBI is a potentially pragmatic tool in British Columbia to help policy makers define the appropriate level of maternity service for a given rural population. The conceptual structure of the model has broad applicability to health service planning problems in other jurisdictions.

Does size matter? A population-based study of birth in lower volume maternity hospitals for low risk women

OBJECTIVE

To study the association between volume of hospital births per annum and birth outcome for low risk women.

DESIGN

Population-based study using the National Perinatal Data Collection (NPDC).

SETTING

Australia.

PARTICIPANTS

Of 750,491 women who gave birth during 1999-2001, there were 331,147 (47.14%) medically 'low risk' including 132,696 (40.07%) primiparae and 198,451 (59.93%) multiparae.

METHODS

The frequency of each birth and infant outcome was described according to the size of the hospital where birth took place. We investigated whether unit size (defined by volume) was an independent risk factor for each outcome factor using public hospitals with greater than 2000 births per annum as a reference point.

MAIN OUTCOME MEASURES

Rates of intervention at birth and neonatal mortality for low risk women in relation to hospitals with <100, 100-500, 501-1000, 1001-2000 and >2001 births per annum.

RESULTS

Neonatal death was less likely in hospitals with less than 2000 births per annum regardless of parity. For multiparous low risk women in hospitals of 100 and 500 births per annum compared with hospitals of >2000 births per annum the adjusted odds of neonatal mortality [adjusted odds ratio (AOR) 0.36; 99% confidence interval (CI) 0.14-0.93]. For low risk primiparous women in hospitals with less than 100 births per annum, there were lower rates of induction of labour (AOR 0.62; 99% CI 0.54-0.73); intrathecal analgesia/anaesthesia (AOR 0.34; 99% CI 0.28-0.42); instrumental birth (AOR 0.80; 99% CI 0.69-0.93); caesarean section after labour (AOR 0.59; 99% CI 0.49-0.72) and admission to a neonatal unit (AOR 0.15; 99% CI 0.10-0.22) and for low risk multiparous women in hospitals with less than 100 births per annum: induction (AOR 0.69; 99% CI 0.62-0.76); intrathecal analgesia/anaesthesia (AOR 0.32; 99% CI 0.29-0.36); instrumental birth (AOR 0.52; 99% CI 0.41-0.67); caesarean section after labour (AOR 0.41; 99% CI 0.33-0.52); and admission to a neonatal unit (AOR 0.09; 99% CI 0.07-0.12).

CONCLUSIONS

In Australia, lower hospital volume is not associated with adverse outcomes for low risk women.

Is Local Maternity Care an Optional Service in Rural Communities?

There has been a precipitous decline in the number of rural communities across Canada providing local maternity care. The evidence suggests that the outcome for newborns may be worse as a result. There is also an emerging understanding of the significant physiological and psychosocial consequences for rural parturient women. Because they cannot plan for birth with any certainty, many of them experience labour and delivery in referral communities as a crisis event fraught with anxiety. The literature suggests that, within a regionalized perinatal system, small maternity services can offer safe care provided that an efficient mechanism for intrapartum transfer has been established. This commentary provides recommendations for sustainable maternity care that will meet the needs of women, their families, and maternity caregivers in rural communities. The recommendations stem from a rural maternity care program of research, consultations with communities, and review of relevant epidemiologic and policy literature.

Are we regionalized enough? Early-neonatal deaths in low-risk births by the size of delivery units in Hesse, Germany 1990-1999

BACKGROUND

While agreement exists about the benefits of regionalization for high-risk births, little evidence exists regarding regionalization of low-risk births. The objective of this study was to investigate the impact of regionalization on neonatal survival focussed on low-risk births.

METHODS

Data from the perinatal birth register of Hesse, 1990-1999 were used comprising detailed information about 582,655 births covering more than 95% of all births in Hesse. Outcome events were death during labour or within the first 7 days of life (early-neonatal death). Mortality rates and corresponding 95% CI were calculated according to hospital volume measured by births per year and birthweight categories.

RESULTS

Birthweight-specific mortality rates were lowest in large delivery units and highest in smaller delivery units. This gradient was especially pronounced within low-risk births and was also confirmed in several logistic regression models adjusting for additional risk factors. A more than threefold mortality risk was observed in hospitals with <500 births/year compared with hospitals with >1,500 births/year (odds ratio = 3.48; 95% CI: 2.64-4.58). Further trend analyses indicated that prenatal prevention programmes and the increasing usage of modern prenatal diagnostic procedures have not reduced this gradient in recent years.

CONCLUSIONS

This analysis presents an urgent public policy issue of whether such elevated risk in smaller delivery units is acceptable or if further consolidation of birthing units should be considered to reduce early-neonatal mortality.

Deliveries in maternity homes in Norway: results from a 2-year prospective study

BACKGROUND

The study aims to report the short-term outcome for the mothers and newborns for all pregnancies accepted for birth at maternity homes in Norway.

METHODS

A 2-year prospective study of all mothers in labor in maternity homes, i.e. all births including women and newborns transferred to hospital intra partum or the first week post partum.

RESULTS

The study included 1275 women who started labor in the maternity homes in Norway; 1% of all births in Norway during this period. Of those who started labor in a maternity home, 1217 (95.5%) also delivered there while 58 (4.5%) women were transferred to hospital during labor. In the post partum period there were 57 (4.7%) transferrals of mother and baby. Nine women had a vacuum extraction, one had a forceps and three had a vaginal breech (1.1% operative vaginal births in the maternity homes). Five babies (0.4%) had an Apgar score below 7 at 5 min. There were two (0.2%) neonatal deaths; both babies were born with a serious group B streptococcal infection.

CONCLUSION

Midwives and general practitioners working in the districts can identify a low-risk population (estimated at 35%) of all pregnant women in the catchment areas who can deliver safely at the maternity homes in Norway. Only 4.5% of those who started labor in the maternity homes had to be transferred to hospital during labor.

Neonatal mortality rates in communities with small maternity units compared with those having larger maternity units

OBJECTIVE

To compare neonatal mortality in geographical areas where most deliveries occur in large hospitals with areas where a larger proportion of deliveries occur in small maternity units.

DESIGN

Population-based study using data from The Norwegian Medical Birth Registry.

SETTING

Records on all deliveries in Norway from 1967 to 1996, a total of 1.7 million births, were equipped with data on the size of the maternity units used by delivering women in that particular area.

MAIN OUTCOME MEASURE

Risk of neonatal death.

RESULTS

Women living in areas where the most frequently used delivery unit had less than 2000 annual deliveries had 1.2 fold the risk of experiencing neonatal death of their newborn (95% CI 1.1-1.3). The relative risk of neonatal death in geographical areas where more than 75% of deliveries occurred in units with more than 3000 annual births was 0.8 (95% CI 0.7-0.9) compared with areas where none delivered in such large units. The relative risk of neonatal death in areas where the most frequently used delivery units had less than 100 annual births was 1.4 (95% CI 1.1-1.7) compared with areas where units of more than 3000 annual births were the most frequently used. Differences in outcome could not be explained by differences in travelling distance to an urban centre where most referral delivery units are located, differences between rural and urban municipalities, or by differences in biological or socio-economic risk factors between municipalities.

CONCLUSIONS

We observed a small but significantly decreased neonatal mortality in areas where the great majority of births occurred in large hospitals.

Relation between size of delivery unit and neonatal death in low risk deliveries: population based study

AIM

To examine risk of neonatal death after low risk pregnancies in relation to size of delivery units.

METHODS

A population based study of live born singleton infants in Norway with birthweights of at least 2500 g was carried out. Antenatal risk factors were adjusted for.

RESULTS

From 1972 to 1995, 1.25 million births fulfilled the criteria. The neonatal death rate was lowest for maternity units with 2001-3000 annual births and steadily increased with decreasing size of the maternity unit to around twice that for units with less than 100 births a year (odds ratio 2.1; 95 % confidence interval 1.6 to 2.8). Institutions with more than 3000 deliveries a year also had a higher rate (odds ratio 1.7; 95% CI 1.4 to 2.0), but analyses suggest that this rate is overestimated.

CONCLUSION

Around 2000 to 3000 annual births are needed to reduce the risk of neonatal deaths after low risk deliveries.

Rural residence and poor birth outcome in Washington state

It is often assumed that poor birth outcomes are more common among rural women than urban women, but there is little substantive evidence to that effect. While the effectiveness of rural providers and hospitals has been evaluated in previous studies, this study focuses on poor birth outcomes in a population of rural residents, including those who leave rural areas for obstetrical care. Rural and urban differences in rates of inadequate prenatal care, neonatal death, and low birth weight were examined in the general population and in subpopulations stratified by risk and race using data from five years (1984-88) of birth and infant death certificates from Washington state. Also examined were care and outcome differences between rural women delivering in rural hospitals and those delivering in urban facilities. Bivariate analyses were confirmed with logistic regression. Results indicate that rural residents in the general population and in various subpopulations had similar or lower rates of poor outcome than did urban residents but experienced higher rates of inadequate prenatal care than did urban residents. Rural residents delivering in urban hospitals had higher rates of poor outcomes than those delivering in rural hospitals. We conclude that rural residence is not associated with greater risk of poor birth outcome. White and nonwhite differences appear to exceed any rural and urban resident differences in rates of poor birth outcome.

Volume/outcome relationships in small rural hospitals

This article summarizes a study of relationships between hospital volume and patient outcomes for diagnoses commonly treated and procedures commonly performed in smaller rural hospitals. Literature review findings and results of analyses using secondary data for several conditions suggest few if any volume/outcome relationships (with mortality being the main outcome for which data were available). A basic finding of the study is that most conditions and procedures for which volume effects on mortality have been found typically do not pertain to small rural hospitals. However, the available secondary data are weak, and many conditions and procedures have not been studied for small rural hospitals. Therefore, continued monitoring and review are important, as well as improved data systems, further research, and information dissemination on volume/outcome relationships. In particular, examining relationships between volume and outcomes in addition to mortality is critical to a thorough understanding of this topic.

Rural maternity care: new models of access

Despite huge health care expenditures, many rural areas of the United States are without adequate access to basic maternity services. Hospital closures and changes in reimbursement have created new threats, even in areas with functional systems of delivering maternity care. New models of care must be developed that take advantage of attributes of low-volume rural maternity units, increase the number of collaborative practices among various providers of maternity services, and judiciously apply new technologies to bring perinatal expertise into the rural hospital when appropriate. Local access to maternity care in rural communities is essential to improve birth outcomes and lower costs. Standardization of management of obstetric emergencies and advances in telecommunication technology may make these low-technology, isolated communities safer than they have been in the past. Changes in health care financing, particularly managed care with capitation, may further support these changes.

Management of labour in an isolated rural maternity hospital

OBJECTIVES

To evaluate the use of a maternity unit run by general practitioners and midwives, describing the outcome of labour in an unselected group of women and quantifying the contribution made by general practitioners.

DESIGN

Retrospective population based review of obstetric patients who had access to an isolated rural maternity unit.

SETTING

Rural area 120 km from a consultant maternity unit.

SUBJECTS

997 consecutive women delivered between January 1987 and May 1991.

MAIN OUTCOME MEASURES

Mode of delivery and complications by place of booking and place of delivery; need for medical intervention and transfer.

RESULTS

530 women (53%) were booked for delivery in the rural unit; this group had a caesarean section rate of 3.8% and an unplanned transfer rate of 12.8% to the consultant unit in labour. Of the 462 who delivered in the low risk unit, 25 (5%) required a forceps delivery; postnatal complications requiring emergency medical support occurred in a further 33 (7%).

CONCLUSIONS

Risk characterisation is possible, but medical support from general practitioners and obstetricians is required in almost a third of women at low risk for complications of delivery. Results of this study support the team approach to obstetric management but not the move towards isolated units without organised medical support.

Birth outcomes by level of obstetric care in Finland: a catchment area based analysis

STUDY OBJECTIVE

To study whether hospitals of different levels are equally safe places to give birth in a regionalised system of care.

DESIGN

This was a population based, cross sectional survey comparing birth outcomes in nationwide catchment areas of different levels of hospital care. All women and low risk women were examined separately.

SETTING AND SUBJECTS

The study population comprised all women who gave birth in Finland in 1987-88. The data were obtained from the Finnish Medical Registry, complemented by official data.

MAIN RESULTS

No statistically significant differences were found in crude or birthweight specific perinatal mortality rates between the catchment areas, nor did the other outcomes studied favour tertiary care compared with other levels of care in the area based analysis.

CONCLUSIONS

In a regionalised system of birth care with a proper referral system, small local hospitals are as safe places to give birth as tertiary care hospitals.

Variation in outcome of surgical procedures

Evidence regarding the relationship between outcome and the number (volume) of patients treated at individual hospitals or by individual surgeons is reviewed and the interplay of other factors such as hospital characteristics, population profiles and referral preferences examined. An inverse relationship between mortality rate and hospital volume has repeatedly been found and, while there have been similar findings for surgeon volume, these results have been less consistent. What is certain is that wide variation in outcome does occur. What is less clear is whether the relationship to volume is a causal one or whether it is due to other factors such as those mentioned above. Despite there being a great deal that we do not understand about these relationships, considerable action has been taken as a result of the studies reported here, in the USA in particular. This has taken the form of rationalization of services, publication of hospital mortality rates and the setting of minimum numbers of specific procedures that should be performed each year by individual surgeons. Understanding of this area should be much greater before rationalization is considered in the name of higher quality and before mortality rates according to hospital or surgeon are published.

The diffusion of obstetric technology into rural U.S. hospitals

We determined the distribution and sophistication of obstetric technologies in all 80 maternity hospitals in the state of Washington and examined the effect of rural or urban location, birth volume, and physician staffing on technological intensity. Although smaller and more rural hospitals refer most premature and low-birth-weight infants to regional referral centers, sophisticated prenatal and intrapartum technologies are available in the majority of even the smallest and most remote rural units. Rural hospitals have slightly lower obstetrical intervention rates than do their urban counterparts, but the differences are not great.

Disparate black and white neonatal mortality rates among infants of normal birth weight in Chicago: a population study

To determine the extent to which disparities in risk status and access to tertiary care affect racial differences in neonatal mortality rates among normal birth weight infants, we conducted a vital records study concerning normal weight black (N = 44,399) and white (N = 48,146) singleton births in Chicago. Neonatal mortality rate among black infants was twice that among white infants (3.3 deaths per 1000 births vs 1.5 deaths per 1000 births); the unadjusted black relative risk equaled 2.2 (95% confidence interval, 1.7 to 2.9). Because prematurity, growth retardation, congenital anomalies, low Apgar scores at 5 minutes, teenage mothers, and poverty were more common among black infants, multivariate analyses were performed. The disparity in mortality rate was greatest between black and white infants with none of these risk factors; relative risk for black infants equaled 3.6 (95% confidence interval, 2.0 to 6.7). Approximately 30% of all deaths of black infants were attributable to birth in nontertiary hospitals. When the confounding variables, including hospital of birth, were put into a multivariate logistic-regression model, the adjusted relative risk estimate (odds ratio) for black infants equaled 1.5 (95% confidence interval, 1.1 to 2.0). Traditional risk factors fail to explain the racial disparity in neonatal mortality rate among normal birth weight infants. Level of perinatal care available, or some factor closely related to this level, is an important determinant of neonatal chance of survival for normal birth weight urban black infants.

Readmission after surgery in Washington State rural hospitals

BACKGROUND

Because of concern about the quality of care in rural hospitals, we examined readmission following four surgical procedures commonly performed in Washington State rural hospitals: appendectomy, cesarean section, cholecystectomy, and transurethral prostatectomy.

METHODS

In a retrospective cohort study, we identified all patients discharged after receiving one of the foregoing procedures using the statewide hospital discharge database. Readmissions to any hospital in the state within 7 or 30 days of discharge were also identified.

RESULTS

During the 2-year period examined, there were no significant differences in readmission rates for surgeries performed in rural and urban hospitals, although the readmission rates for all four procedures were nominally lower in rural hospitals. Logistic regression analyses that controlled for factors that influence readmission did not change these results.

CONCLUSIONS

Investigating readmission rates following common surgeries, we found no evidence of low-quality surgical care in Washington State rural hospitals. Early readmission is an imperfect marker for poor surgical outcome, however, and other proxies for quality remain to be examined.

Volume and outcome of organ transplantation

In general, technically demanding medical procedures are associated with better outcomes when they are carried out in institutions and by physicians with higher volumes of practice. This paper examines the evidence for a volume-outcome relationship in the case of organ transplantation. Although few studies have been done on this subject, existing evidence is consistent with improved outcomes at higher volumes. Therefore, evidence supports policies that regionalize transplantation services.

Safest birth attendants: recent Dutch evidence

Analysis of national perinatal statistics from Holland, 1986, demonstrates that for all births after 32 weeks' gestation mortality is much lower under the non-interventionist care of midwives than under the interventionist management of obstetricians at all levels of predicted risk. This finding confirms with great authority the conclusions of all earlier impartial analyses from Britain and other countries which agree in contradicting the claims on which the organisation of maternity services in most developed countries is now based, namely, that childbirth is made so much safer by the application of high technology that only this option should be provided.

Contribution of general practitioners to hospital intrapartum care in maternity units in England and Wales in 1988

OBJECTIVE

To ascertain the contribution of general practitioners to hospital intrapartum care in 1988.

DESIGN

Confidential postal questionnaire.

SETTING

All maternity units in England and Wales.

MAIN OUTCOME MEASURES

Type of general practitioner unit (if any); number of bookings, transfers, and deliveries by general practitioners; participation of general practitioners in the policy and audit of the unit.

RESULTS

277 (93%) of 297 units replied. Of 611,644 deliveries, 36,043 (5.9%) were under general practitioner care. In all, 228 units permitted general practitioners to book women under their sole care: 65 were isolated, 29 alongside, and 134 integrated general practitioner units. Alongside units had significantly more bookings (568), antenatal transfers (69), intrapartum transfers (86), and deliveries (387) compared with isolated units (185, 18, 16, and 125, respectively) and integrated units (106, 18, 18, and 52) (p less than 0.001 for all differences). The percentage of women booked by general practitioners transferred either before or during labour was independent of both the type of unit and the number of general practitioner bookings. General practitioners in consultant units were significantly less likely to attend meetings reviewing perinatal mortality (p less than 0.01), and these units were less likely to have any form of general practitioner-consultant liaison committee (p less than 0.001) compared with general practitioner units as a whole. Compared with those in isolated and alongside units, general practitioners in integrated units were less likely to have taken part in deciding the unit's booking policy (p less than 0.01) and consultants more likely to be the final determinant of whether a general practitioner should be permitted to practice within the unit (p less than 0.001).

CONCLUSIONS

Both the number of deliveries booked by general practitioners and the number of isolated general practitioner units have fallen. Transfer from general practitioner to consultant care was independent of the general practitioner unit's caseload or the type of unit. General practitioner units differ from consultant units in important ways and differ among themselves as well. Except in remote areas, alongside units may be the ideal type of unit to encourage general practitioners to continue to provide intrapartum care.

Children and pregnant women

A review of the literature of the 1980s reveals that women living in rural American are at risk for receiving inadequate prenatal and maternal care. Documented risk factors include poverty and concomitant lack of medical insurance, residence in the most restrictive Medicaid states, and loss of local services including the closure of obstetric units of rural hospitals and the decision by local physicians to discontinue obstetrics. A prominent factor in a physician's decision to stop providing maternity care is the escalating cost of medical liability insurance; however, other forces are also at work, including interference with personal and family activities, disruption of other aspects of professional life (e.g., office schedule), inadequate reimbursement, and an inability to keep up with advancing technology. A research agenda for the 1990s should be consistent with previous recommendations and must stimulate the development of new programs that will induce the maximum number of providers to again offer high quality perinatal care to rural women. Other items on the 1990s research agenda include: (1) the clarification of the impact of lost perinatal services in rural areas, (2) the effects of travel time and distance on perinatal outcomes and cost of care, (3) the effect of loss of obstetric services on other health care services for women and children, and (4) comparisons of regionalized versus centralized systems for the provision of perinatal services.

The relation of obstetrical volume and nursery level to perinatal mortality

We investigated the relation of hospital delivery volume and nursery technology level to perinatal outcome in 226,164 White singleton births in Washington State, 1980-83. Level III facilities (neonatal intensive care unit) were defined by the state licensing commission. We defined the Level II (intermediate) and Level I (normal newborn) facilities using published criteria. Infants under 2000 gm born in Level III facilities had half the risk of perinatal death compared to those born in a Level I or II facility. No significant improvement was noted among level or volume groupings for normal birthweight infants. A loglinear regression model of hospital perinatal death rates showed that when birthweight and maternal risk were controlled, obstetrical volume added minimal explanatory power to level of nursery care.

Closure of rural hospital obstetric units in Missouri

We studied 65 rural hospitals in Missouri that provided obstetric services in 1986. The hospitals were divided into three groups on the basis of their physician obstetric staff: family or general practitioners only (38 hospitals), family practitioners and obstetricians (22 hospitals), and obstetricians only (five hospitals). From birth certificate data, we detected a decline in the mean number of births in all groups of rural hospitals comparing 1980-1983 with 1984-1987. Births in family practice only hospitals declined most over the past four years (35%), whereas there was only a 4 percent decline in the number of births to rural Missouri women. In 1987, 10 of the 38 family practice only hospital obstetric units closed due to loss of physician services, whereas none of the other hospitals stopped providing obstetric care (X2 = 8.40, p less than 0.005). These findings suggest that rural hospitals with family and general practitioners exclusively on their obstetric staffs are at significant risk of closing their obstetric units.

Rebuilding a rural obstetrical program: a case study

The rebuilding of an obstetrical department of a small rural hospital (40 beds) in rural Nevada is described. The number of births at the hospital increased from 20 in 1981 to more than 300 for the past four years. The market share of obstetrical patients in the county increased from less than 10 percent in 1981, to an average of 80 percent for the last five years. The five major steps contributing to the success of this rebuilding program are described. Obstetrical malpractice liability insurance and the shaky financial viability of rural hospitals are discussed as the two major threats to rebuilding a rural obstetrical program. The experience in this setting suggests that rural residents want and desire local obstetrical care and that a team approach can rebuild a rural obstetrical capacity in a relatively short time.