The relationship between neonatal mortality and hospital level.

BACKGROUND. The relative safety of the small obstetrics unit compared with that of the larger or more technologically sophisticated units remains controversial. The purpose of this study was to examine the relationship between neonatal mortality and the level of perinatal services present in the hospital of birth. METHODS. Logistic regression was used to model neonatal mortality as a function of race, weight, and hospital level. Hospitals were classified into five categories using the volume of deliveries and the level of perinatal services available. RESULTS. Both black and white infants born at Level I-A hospitals who weighed less than 2250 (5 lb) fared worse than those born at Level III hospitals. There were no other statistically significant differences between the remaining hospital levels at any weight, although there was a trend toward improved mortality for white babies weighing less than 1500 g (3 lb, 5 oz) born at Level III centers. Level II-B hospitals, which also had neonatal intensive care available, did not demonstrate this trend. RESULTS. The results of this study support the safety of facilities with lower levels of care for delivery of normal birthweight infants and the need for continued centralized delivery of higher levels of care for high-risk patients.     

Improvement in infant and perinatal mortality in the United States, 1965--1973: I. Priorities for intervention

Changes in United States infant and perinatal mortality in the period 1965--1973 were examined by race, age at death or length of gestation, and degree of urbanization. The decline of postneonatal mortality rates was greater than the declines of fetal and neonatal mortality rates. Other-than white infant and fetal mortality rates improved more than the white rates, except in the first day of life. Postneonatal mortality rates improved more in rural than in urban areas, while neonatal and perinatal mortality rates improved more in urban areas than in rural. These improvements in mortality rates have occurred at the same time as changes in medical techniques and the organization and availability of health services, improvements in economic conditions and standards of living, and changes in the demographic characteristics of the child-bearing population of the United States. Each of these changes was in a direction expected to have a favorable effect on infant and perinatal mortality. Nevertheless, the improvement of infant mortality rates has not changed the relative position of the United States in comparison with other countries. Programs to improve infant and perinatal mortality can use the data in this study to define high priority target groups using a method based on the size of the problem in the target group, the severity of the problem, and the amount and direction of change.     

Birthweight-Specific Mortality: Important Inequalities Remain*

ABSTRACT: Optimal birthweight-specific neonatal mortality has not yet been achieved in the United States, particularly in rural states. A comparison of 1983 data from Massachusetts, an urban state with low infant mortality, and South Carolina, a rural state with a higher infant mortality rate, shows that, for whites, two-thirds of the difference in infant mortality between the two states is due to differences in birthweight-specific mortality. For blacks, all of the difference in infant mortality is due to the difference in birthweight-specific mortality. Birthweight-specific mortality rates are lower in Massachusetts than in South Carolina across the birthweight spectrum generally for both races. It is likely that some portion of these differences are due to the urban-rural difference between the states, compounded by the difference in poverty rates. The birthweight-specific mortality difference, particularly at higher birthweights, indicates that outcomes in South Carolina could be improved with better access to perinatal care and the more aggressive follow-up of high-risk babies who do not require neonatal intensive care unit (NICU) services. This study suggests that, while efforts to improve the birthweight distribution should certainly be pursued, we should also work to complete the improvement of birthweight-specific mortality in rural states.     

Obstetrics in family practice: a personal and political perspective.

A heated debate is currently taking place concerning the style, methods and location of future obstetrical and neonatal care. On the one hand, there is a trend toward increasing technology of obstetrical and neonatal care with some professional groups favoring regionalization of these services to large regional centers. On the other hand, there are counterforces to such regionalization including community hospitals, many practicing obstetricians, nurse midwives, the women's liberation movement, the "alternative lifestyle movement," the Leboyer concept of delivery, the family-centered maternity care movement, and the family practice movement. This paper explores these issues and presents important reasons for family-oriented obstetric and neonatal care involving the family physician in community settings readily accessible to patients. The inclusion of obstetrical care as an integral part of family practice is important to the growth and development of the specialty.     

Perinatal and infant mortality in Wales: inter-district variations and associations with socio-environmental characteristics

Stillbirth rates, perinatal death rates, early and late neonatal death rates and (post-neonatal) infant death rates are reported for Wales since local government and NHS reorganization in 1974. The time trends in these rates show declining mortality, in full weight and in low birthweight babies. Analysis of average rates for the period 1974-81 inclusive in the 37 local authority districts within Wales demonstrate wide variations, with PMRs ranging from 11.5 to 22.5 per 1000. Many highly statistically significant associations were evident between socioeconomic characteristics of the districts and stillbirth rates but few with neonatal death rates and none with infant death rates.     

Reducing infant mortality in rural America: evaluation of the Rural Infant Care Program.

The Rural Infant Care Program (RICP), initiated in 1979, was developed to improve perinatal health care in ten rural sites with histories of high infant mortality rates. Time-series regression models indicate that neonatal mortality rates were reduced, following program initiation, by 2.6 per 1,000 live births (p = .0002); black neonatal mortality rates were reduced by an estimated 4.5 per 1,000 (p = .0004). Three sets of comparison areas exhibited no significant changes in rates. Postneonatal mortality rates did not increase in the target areas following initiation of RICP, indicating that deaths were not merely being postponed. Nine of ten individual sites showed reductions in infant mortality following program initiation. Birthweight-specific mortality data indicated that the decline was due mainly to reductions in neonatal mortality among low-birthweight infants. No reductions in the incidence of low birthweight were observed in the target areas. Substantial gaps in the delivery of prenatal care remained due to the continuing poverty of the population and the resultant lack of financial coverage for health services. We conclude that improved perinatal medical care can reduce infant mortality in poor rural areas to average levels experienced in the United States, and that the high rates still observed in some rural counties are unnecessary.     

Mortality among very low-birthweight infants in hospitals serving minority populations

OBJECTIVE: We investigated whether the proportion of Black very low-birth-weight (VLBW) infants treated by hospitals is associated with neonatal mortality for Black and White VLBW infants. METHODS: We analyzed medical records linked to secondary data sources for 74050 Black and White VLBW infants (501 g to 1500 g) treated by 332 hospitals participating in the Vermont Oxford Network from 1995 to 2000. Hospitals where more than 35% of VLBW infants treated were Black were defined as "minority-serving." RESULTS: Compared with hospitals where less than 15% of the VLBW infants were Black, minority-serving hospitals had significantly higher risk-adjusted neonatal mortality rates (White infants: odds ratio [OR]=1.30, 95% confidence interval [CI] = 1.09, 1.56; Black infants: OR = 1.29, 95% CI = 1.01, 1.64; Pooled: OR = 1.28, 95% CI=1.10, 1.50). Higher neonatal mortality in minority-serving hospitals was not explained by either hospital or treatment variables. CONCLUSIONS: Minority-serving hospitals may provide lower quality of care to VLBW infants compared with other hospitals. Because VLBW Black infants are disproportionately treated by minority-serving hospitals, higher neonatal mortality rates at these hospitals may contribute to racial disparities in infant mortality in the United States.     

Perinatal mortality in southern Brazil: a population-based study of 7392 births

Perinatal, fetal and early neonatal mortality rates were determined in a population of 7392 babies born in hospitals in Pelotas (total population, 260 000) during 1982. These babies represented over 99% of all births in the city in that year. The perinatal mortality rate for singletons was 31.9 per 1000 total births, the fetal mortality rate being 16.2 and the early neonatal mortality rate 15.9 per 1000 total births.     

Phantoms in the snow: Canadians' use of health care services in the United States

To examine the extent to which Canadian residents seek medical care across the border, we collected data about Canadians' use of services from ambulatory care facilities and hospitals located in Michigan, New York State, and Washington State during 1994-1998. We also collected information from several Canadian sources, including the 1996 National Population Health Survey, the provincial Ministries of Health, and the Canadian Life and Health Insurance Association. Results from these sources do not support the widespread perception that Canadian residents seek care extensively in the United States. Indeed, the numbers found are so small as to be barely detectible relative to the use of care by Canadians at home.     

Perinatal mortality in Shanghai: 1986-1987.

The incidence of, and risk factors associated with, perinatal mortality in Shanghai during 1986-1987 are examined using data from a multi-site study conducted in 29 hospitals. The overall perinatal mortality rate was 14.96 per 1000 births. The mortality rates of antepartum fetal death, intrapartum fetal death and early neonatal death were 5.97, 2.06 and 6.94 per 1000 births, respectively. The perinatal mortality rates increased in winter and late spring. Male neonates were 1.5 times more likely to die than females. Low birthweight and preterm infants had 15 to 80 times higher risk of perinatal death. Higher parity, multiple pregnancy, and maternal age greater than or equal to 35 years were the risk factors for perinatal mortality. Asphyxia, cord complications, and congenital malformations were found to be the major causes of perinatal deaths. Comparison of mortality rates between Shanghai and the US suggests that the shortage of advanced technology in perinatal care (e.g. neonatal intensive care units) is a major obstacle to the reduction of perinatal mortality in Shanghai.     

Delivery type and neonatal mortality among 10,749 breeches.

Data on 10,749 breech presentations were analyzed for the effect of delivery type on neonatal mortality. Most of the data are from developing countries, and most of the hospitals have higher mortality than is found in Europe or the United States. The simultaneous effect of type of hospital where the delivery occurred, type of breech, birthweight, and parity were examined. The benefit of cesarean delivery was greater for nulliparae than multiparae, greater for footlings than for frank or complete breeches, and greater for larger babies than smaller ones. This last finding probably reflects the quality of neonatal care in developing country hospitals rather than the value of cesarean section. Maternal mortality and morbidity was higher among women delivered abdominally than among those delivered vaginally.     

Factors affecting the outcome of maternity care. II. Neonatal outcomes and resources beyond the hospital of birth.

Analysis of data about perinatal mortality and indicators of resources at maternity hospitals in the West Midlands region between 1977 and 1983 showed that paediatric staff ratios were inversely related to in-house mortality rates. In this paper, the outcomes for and resources used by transferred babies are added to those of the hospital of birth for three of the study years--1978, 1980, and 1982. Patterns of transfer differ between units and over time in the region, and a regional neonatal intensive care policy was introduced in 1980. Analysis of the new variables showed that in 1978 paediatric staffing was significantly inversely related to neonatal mortality. In later years, neonatal mortality of births at maternity units is explained entirely by the proportion of low or very low weight births.     

Rural Hospital Preparedness for Neonatal Resuscitation

ABSTRACT: Context: Neonatal resuscitation is a critical component of perinatal services in all settings. Purpose: To systematically describe preparedness of rural hospitals for neonatal resuscitation, and to determine whether delivery volume and level of perinatal care were associated with overall preparedness or its indicators. Methods: We developed the 15‐point Hospital Neonatal Resuscitation Survey to examine institutional preparedness for neonatal resuscitation in 4 areas: policy and procedure, resuscitation team membership, continuing education, and connections with a wider system of perinatal care. All 58 rural hospitals with perinatal services in 2 upper Midwestern states (North Dakota and Minnesota) were asked to provide information describing preparedness for neonatal resuscitation. Nursing administrators responded to the survey. Findings: A total of 26 hospitals took part. Annual delivery volume ranged from 4 to 958. Preparedness scores ranged from 4 to 12. Hospitals with more than 125 deliveries each year reported significantly higher levels of preparedness than lower volume hospitals (9.50 vs 5.83, P < .001). Overall preparedness was not associated with level of perinatal care. Most rural hospitals did not identify a formal collaborative relationship with a regional level III perinatal center. Conclusions: Substantial variation in hospital preparedness for neonatal resuscitation was identified. Preparedness was associated with delivery volume. Lack of collaborative agreements between rural hospitals and level III perinatal centers was pervasive. Additional research into the measurement of hospital preparedness for neonatal resuscitation as a component of quality rural perinatal care is needed to optimize outcomes for rural‐born neonates.     

The health consequences of teenage fertility

A review of the literature on the health consequences of teenage pregnancy and childbirth shows remarkable similarity in findings from studies conducted in the United States, Canada, Britain, France and Sweden. In particular, results of studies conducted since 1970 have tended to indicate that the increased risk of maternal complications from pregnancy and delivery among teenagers--especially those older than 15--is associated more with socioeconomic factors than with the biological effects of age. Smaller differences in maternal mortality between teenagers and older women exist in England and Wales than in the United States and France; this finding suggests that England and Wales may have minimized the age or socioeconomic factors contributing to a difference in rates. Inadequate prenatal care may be a major cause of pregnancy-related complications for mothers, since teenagers in all countries are more likely than older mothers to seek care late in the pregnancy or not all. There is a very marked association between young age of mother and low birth weight in all countries. Sweden has the lowest rate of low birth weight at all maternal ages, and the United States generally has the highest. Some of the apparent effect of young maternal age on birth weight may be because the birth is likely to be the mother's first, and first births have a higher incidence of prematurity. As in the case of maternal health, inadequate prenatal care has been singled out as an important determinant of both prematurity and low birth weight. Late fetal death rates in the United States, England and Wales, and France are slightly higher among teenagers than among women in their 20s. In Canada and Sweden, however, no substantially increased risk for young women is found. Perinatal death rates, which one might expect to be influenced more by environmental factors than are late fetal deaths, show a more marked increase among infants of teenagers than do rates of late fetal deaths. Again, Sweden does not fit the pattern. Studies that separate data for young teens and older teenage mothers also indicate that increased perinatal and late fetal mortality rates may occur only among very young teenage mothers. There is no evidence of an overall increase in congenital malformations among babies born to teenagers. When individual birth defects are examined, some studies have shown increased rates of cardiovascular and central nervous system malformations among the children of teenage mothers.(ABSTRACT TRUNCATED AT 400 WORDS)     

State family planning and abortion expenditures: their effect on public health.

OBJECTIVES. This study examines whether state family planning expenditures and abortion funding for Medicaid-eligible women might reduce the number of low-birthweight babies, babies with late or no prenatal care, and premature births, as well as the rates of infant and neonatal mortality. METHODS. Using a pooled time-series analysis from 1982 to 1988 with the 50 states as units of analysis, this study assessed the impact of family planning expenditures and abortion funding on several public health outcomes while controlling for other important variables and statistical problems inherent in pooled time-series studies. RESULTS. States that funded abortions had a significantly higher rate of abortions and significantly lower rates of teen pregnancy, low-birthweight babies, premature births, and births with late or no prenatal care. States that had higher expenditures for family planning had significantly fewer abortions, low-birthweight babies, births with late or no prenatal care, infant deaths, and neonatal deaths. CONCLUSIONS. Funding abortions for Medicaid-eligible women and increasing the level of expenditures for family planning are associated with major differences in infant and maternal health in the United States.     

A regionalized perinatal continuing education programme: successful adaptation to a foreign health care system and language

Much of the decline in perinatal mortality over the past two decades in the United States has been attributed to regionalization of perinatal care. Outreach education from regional medical centres to community hospitals is an essential component of regionalization. The Perinatal Continuing Education Program (PCEP) has been successfully used for outreach education in more than 30 states since 1979. This project tested the efficacy of implementing the PCEP strategy in Poland. PCEP was adapted to Polish conditions, translated, and implemented in four phases. The scheme allowed gradual transfer of ownership to Polish leaders and use of the existing regional structure to disseminate information from regional centres to community hospitals. Evaluation included measures of programme use (participation and completion rates) and acceptance (participant evaluation forms), cognitive knowledge (pre- vs. post-tests), and patient care (chart reviews). Of 2093 doctors, nurses and midwives who began, 1615 (77%) completed the programme, with higher completion by regional centre than community hospital staff. All participant groups responded favourably to the materials and expressed moderate confidence in their mastery of the information and skills. Test scores improved significantly for all phases and for all disciplines, with baseline and final scores consistent with degrees of previous professional education. Large baseline and inter-hospital variations in chart review data restricted analysis of care practices. A comprehensive perinatal education programme can be successfully transferred to a foreign health care system. We believe the following to be particularly important: multidisciplinary instructors and students; a self-instructional format; content aimed at practice rather than theory; and an organized implementation strategy co-ordinated by local personnel.     

Neonatal mortality clusters: a new tool for classifying neonatal outcomes.

BACKGROUND: A method for assessing general hospital neonatal care performance is needed that is simple, is easy to use, and requires minimal data. METHODS: All neonatal deaths in Washington State obstetric hospitals from 1980 to 1983 were assigned to 10 mutually exclusive neonatal mortality clusters, a new classification method derived from information available on the death certificate. RESULTS: More than one-third (35.3 percent) of all neonatal deaths fell within one of the seven clusters considered to represent potentially preventable causes of death. The rate of possibly preventable deaths was much higher in level III hospitals than in level II or level I hospitals, a finding similar to that observed in other states using different analytic approaches. CONCLUSIONS: Neonatal mortality clusters offer a less complex method of classifying neonatal deaths and assessing hospital performance than other currently used techniques.     

Pregnancy and infant health: progress toward the 1990 objectives

Assuring all infants a healthy start in life and enhancing the health of their mothers are goals of the Public Health Service's health promotion and disease prevention initiative. The 13 priority objectives selected for the pregnancy and infant health area of the initiative focus on lowering infant, neonatal, and perinatal mortality rates, reducing the number of low-birth-weight infants, improving the health care of pregnant women and infants through regionalized perinatal care systems and comprehensive primary care services, encouraging early prenatal care and healthy lifestyles in pregnancy, and targeting the factors and populations associated with health risk. Although considerable progress has been made in this century in lowering the infant mortality rate, infants continue to die at a higher rate than members of any other age category under 60 years, and black infants die at almost twice the rate of white infants. To lower these high mortality rates, the private, public, and voluntary sectors have cooperated in new approaches to perinatal and infant health that have already produced some encouraging results. Recent data, for example, indicate that the priority objective of universal screening of newborns for treatable metabolic disorders has already been achieved and that the target for neonatal and infant mortality rates could be reached earlier than 1990. Substantial challenges, however, lie ahead if the current racial and ethnic differentials evident in the rates for prenatal care registration, low-birth-weight babies, and maternal and infant mortality are to be eliminated.     

Differences between neonatal mortality and stillbirth rates in Brazil: a study based on the Unified Health System (SIH/SUS) Hospital Information System

The main objective of this article is to estimate stillbirth and neonatal mortality rates in Brazilian States based upon the country's Hospital Information System. Analysis of 1995 data reveals contrasting rates between the various regions of the country. In order to elucidate the States' different rates, we focused on the association between indicators of coverage, utilization, and access to the Unified Health System (SUS). The results for the neonatal period mostly showed higher early neonatal mortality rates when compared to late neonatal mortality rates, higher neonatal mortality rates in the States comprising the South and Southeast regions, less variable rates between those States, and extremely low rates in some States of the North, Central-West, and Northeast regions. The limited supply of SUS services and low access to same are relevant constraints on health care for the population in the North and Northeast. Aspects related to quality of childbirth and neonatal care are also reflected in the rates studied. The findings suggest that spatial and temporal monitoring of these rates could provide analytical support for organizing the Maternal and Child Health Program.     

Causes of perinatal mortality in Pelotas, RS (Brazil). Use of a simplified classification

The causes of perinatal mortality among 7392 hospital births which occurred in Pelotas, RS, Brazil during 1982, were analyzed using the simplified classification described by Wigglesworth. The main advantage of this classification is that it can be used even in places where postmortems are seldom performed. The perinatal deaths were classified into 5 groups: a) macerated fetuses without malformations; b) congenital malformations; c) immaturity; d) asphyxia, and e) other causes of death. The perinatal mortality rate was 33.7/1000 births, nearly equally divided between fetal and early neonatal deaths, and 8.8% of the babies were of low birthweight. 36% of the perinatal deaths were antepartum stillbirths, and 60% of these weighed 2000 g or more. The 2nd most important cause was immaturity, which accounted for 31% of the deaths. In this latter group, 21% weighed 2000 g or more at birth. These findings, as well as the high birthweight-specific perinatal mortality rates, strongly suggest that there are deficiencies in the antenatal and delivery care in Pelotas that must be corrected promptly. Policies that should be implemented by health planners include: decentralization of antenatal care clinics; utilization in these clinics of the "at-risk" concept to identify women at high risk of delivering low birthweight babies, efforts to increase community participation and home visits in order to attract those pregnant women who do not attend clinics. In addition, it is mandatory that well-trained doctors (obstetricians and pediatricians) should be available 24 hours/day at the maternity hospitals to assist mothers and babies identified as being at high risk. (author's)