Peiyin Hung

Rural-urban differences in obstetric care, 2002-2010, and implications for the future

Background:Approximately 15% of the 4 million annual US births occur in rural hospitals. Objective:To (1) measure differences in obstetric care in rural and urban hospitals, and to (2) examine whether trends over time differ by rural-urban hospital location. Research Design and Subjects:This was a retrospective analysis of hospital discharge records for all births in the 2002–2010 Nationwide Inpatient Sample, which constitutes 20% sample of US hospitals (N=7,188,972 births: 6,316,743 in urban hospitals, 837,772 in rural hospitals). Measures:Rates of low-risk cesarean (full-term, singleton, vertex pregnancies; no prior cesarean), vaginal birth after cesarean (VBAC), nonindicated cesarean, and nonindicated labor induction were estimated. Results:In 2010, low-risk cesarean rates in rural and urban hospitals were 15.5% and 16.1%, respectively, and nonindicated cesarean rates were 16.9% and 17.8%, respectively. VBAC rates were 5.0% in rural and 10.0% in urban hospitals in 2010. Between 2002 and 2010, rates of low-risk cesarean and nonindicated cesarean increased, and VBAC rates decreased in both rural and urban hospitals. Nonindicated labor induction was less frequent in rural versus urban hospitals in 2002 [adjusted odds ratio=0.79 (0.78–0.81)], but increased more rapidly in rural hospitals from 2002 to 2010 [adjusted odds ratio=1.05 (1.05–1.06)]. In 2010, 16.5% of rural births were induced without indication (12.0% of urban births). Conclusions:From 2002 to 2010, cesarean rates rose and VBAC rates fell in both rural and urban hospitals. Nonindicated labor induction rates rose disproportionately faster in rural versus urban settings. Tailored clinical and policy tools are required to address differences between rural and urban hospitals.

Why Are Obstetric Units in Rural Hospitals Closing Their Doors

OBJECTIVES To understand hospital- and county-level factors for rural obstetric unit closures, using mixed methods. DATA SOURCES Hospital discharge data from Healthcare Cost and Utilization Projects Statewide Inpatient Databases, American Hospital Association Annual Survey, and Area Resource File for 2010, as well as 2013-2014 telephone interviews of all 306 rural hospitals in nine states with at least 10 births in 2010. Via interview, we ascertained obstetric unit status, reasons for closures, and postclosure community capacity for prenatal care. STUDY DESIGN Multivariate logistic regression and qualitative analysis were used to identify factors associated with unit closures between 2010 and 2014. PRINCIPAL FINDINGS Exactly 7.2 percent of rural hospitals in the study closed their obstetric units. These units were smaller in size, more likely to be privately owned, and located in communities with lower family income, fewer obstetricians, and fewer family physicians. Prenatal care was still available in 17 of 19 communities, but local women would need to travel an average of 29 additional miles to access intrapartum care. CONCLUSIONS Rural obstetric unit closures are more common in smaller hospitals and communities with a limited obstetric workforce. Concerns about continuity of rural maternity care arise for women with local prenatal care but distant intrapartum care.

Birth Volume and the Quality of Obstetric Care in Rural Hospitals

BACKGROUND Childbirth is the most common reason for hospitalization in the United States. Assessing obstetric care quality is critically important for patients, clinicians, and hospitals in rural areas. METHODS The study used hospital discharge data from the Statewide Inpatient Databases, Healthcare Cost and Utilization Project, Agency for Healthcare Research and Quality, for 9 states (Colorado, Iowa, Kentucky, New York, North Carolina, Oregon, Vermont, Washington, and Wisconsin) to identify all births in rural hospitals with 10 or more births/year in 2002 (N = 94,356) and 2010 (N = 103,880). Multivariate logistic regression was used to assess the relationship between hospital annual birth volume, measured as low (10-110), medium (111-240), medium-high (241-460) or high (>460), and 3 measures of obstetric care quality (low-risk cesarean rates for term, vertex, and singleton pregnancies with no prior cesarean; nonindicated cesarean; and nonindicated induction) and 2 patient safety measures (episiotomy and perineal laceration). RESULTS The odds of low-risk and nonindicated cesarean were lower in medium-high and high-volume rural hospitals compared with low-volume hospitals after controlling for maternal demographic and clinical factors. In low-volume hospitals, odds of labor induction without medical indication were higher than in medium-volume hospitals, but not significantly different from medium-high or high-volume hospitals. Odds of episiotomy were greater in medium-high or high-volume hospitals than in low-volume hospitals. The likelihood of perineal laceration did not differ significantly by birth volume. CONCLUSIONS Obstetric quality and safety outcomes vary significantly across rural hospitals by birth volume. Better performance is not consistently associated with either lower or higher volume facilities.

Location of childbirth for rural women: implications for maternal levels of care.

BACKGROUND A recent American Congress of Obstetricians and Gynecologists and Society for Maternal-Fetal Medicine (MFM) consensus statement on levels of maternity care lays out designations that correspond to specific capacities available in facilities that provide obstetric care. Pregnant women in rural and remote areas receive particular attention in discussions of regionalization and levels of care, owing to the challenges in assuring local access to high-acuity services when necessary. Currently, approximately half a million rural women give birth each year in US hospitals, and whether and which of these women give birth locally is crucial for successfully operationalizing maternal levels of care. OBJECTIVE We sought to characterize rural women who give birth in nonlocal hospitals and measure local hospital characteristics and maternal diagnoses present at childbirth that are associated with nonlocal childbirth. STUDY DESIGN This was a repeat cross-sectional analysis of administrative hospital discharge data for all births to rural women in 9 states in 2010 and 2012. Multivariate logistic regression models were used to predict the odds of childbirth in a nonlocal hospital (at least 30 road miles from the patients residence). We examined patient age, race/ethnicity, payer, rurality, clinical diagnoses (diabetes, hypertension, hemorrhage during pregnancy, placental abnormalities, malpresentation, multiple gestation, preterm delivery, prior cesarean delivery, and a composite of diagnoses that may require MFM consultation), as well as local hospital characteristics (birth volume, neonatal care level, ownership, accreditation, and system affiliation). RESULTS The rate of nonlocal childbirth among 216,076 rural women was 25.4%. It varied significantly by primary payer (adjusted odds ratio [AOR], 0.76; 95% confidence interval [CI], 0.68-0.86 for Medicaid vs private insurance) and by clinical conditions including multiple gestation (AOR, 1.82; 95% CI, 1.58-2.1), preterm deliveries (AOR, 2.41; 95% CI, 2.17-2.67), and conditions that may require MFM services or consultation (AOR, 1.28; 95% CI, 1.22-1.35). Rural women whose local hospital did not have a neonatal intensive or intermediate care unit had nearly double the odds of giving birth at a nonlocal hospital (AOR, 1.94; 95% CI, 1.64-2.31). CONCLUSION Approximately 75% of rural women gave birth at local hospitals; rural women with preterm births and clinical complications, as well as those without local access to higher-acuity neonatal care, were more likely to give birth in nonlocal hospitals. However, after controlling for clinical complications, rural Medicaid beneficiaries were less likely to give birth at nonlocal hospitals, implying a potential access challenge for this population.

Association between Hospital Birth Volume and Maternal Morbidity among Low-Risk Pregnancies in Rural, Urban, and Teaching Hospitals in the United States

Objectives This study aims to examine the relationship between hospital birth volume and multiple maternal morbidities among low-risk pregnancies in rural hospitals, urban non-teaching hospitals, and urban teaching hospitals, using a representative sample of U.S. hospitals. Study Design Using the 2011 Nationwide Inpatient Sample from 607 hospitals, we identified 508,146 obstetric deliveries meeting low-risk criteria and compared outcomes across hospital volume categories. Outcomes include postpartum hemorrhage (PPH), chorioamnionitis, endometritis, blood transfusion, severe perineal laceration, and wound infection. Results Hospital birth volume was more consistently related to PPH than to other maternal outcomes. Lowest-volume rural (< 200 births) and non-teaching (< 650 births) hospitals had 80% higher odds (adjusted odds ratio [AOR] = 1.80; 95% CI = 1.56-2.08) and 39% higher odds (AOR = 1.39; 95% CI = 1.26-1.53) of PPH respectively, than those in corresponding high-volume hospitals. However, in urban teaching hospitals, delivering in a lower-volume hospital was associated with 14% lower odds of PPH (AOR = 0.86; 95% CI = 0.80-0.93). Deliveries in rural hospitals had 31% higher odds of PPH than urban teaching hospitals (AOR = 1.31; 95% CI = 1.13-1.53). Conclusions Low birth volume was a risk factor for PPH in both rural and urban non-teaching hospitals, but not in urban teaching hospitals, where higher volume was associated with greater odds of PPH.

Minimum-Distance Requirements Could Harm High-Performing Critical-Access Hospitals And Rural Communities

Since the inception of the Medicare Rural Hospital Flexibility Program in 1997, over 1,300 rural hospitals have converted to critical-access hospitals, which entitles them to Medicare cost-based reimbursement instead of reimbursement based on the hospital prospective payment system (PPS). Several changes to eligibility for critical-access status have recently been proposed. Most of the changes focus on mandating that hospitals be located a certain minimum distance from the nearest hospital. Our study found that critical-access hospitals located within fifteen miles of another hospital generally are larger, provide better quality, and are financially stronger compared to critical-access hospitals located farther from another hospital. Returning to the PPS would have considerable negative impacts on critical-access hospitals that are located near another hospital. We conclude that establishing a minimum-distance requirement would generate modest cost savings for Medicare but would likely be disruptive to the communities that depend on these hospitals for their health care.

The Practice of Midwifery in Rural US Hospitals.

INTRODUCTION Workforce shortages limit access to care for pregnant women in rural and remote areas. The goal of this analysis was to describe the role of certified nurse-midwives (CNMs) in providing maternity care in rural US hospitals and to examine state-level variation in rural CNM practice. METHODS We identified 306 rural hospitals with at least 10 births in 2010 using discharge data from the Statewide Inpatient Databases for 9 US states. We conducted a telephone survey of hospital maternity unit managers (N = 244) from November 2013 to March 2014 to understand their maternity care workforce and practice models. We describe the presence of CNMs attending births by hospital and state characteristics. Using logistic multivariate regression, we examined whether CNMs attend births, adjusting for hospital characteristics, practice regulations, and state. We also analyzed the content of open-ended responses about staffing plans, challenges, and opportunities that unit managers identified, with a focus on midwifery practice. RESULTS CNMs attend births at one-third of rural maternity hospitals in 9 US states. Significant variability across states appears to be partially related to autonomous practice regulations: states allowing autonomous midwifery practice have a greater proportion of rural hospitals with midwives attending births (34% vs 28% without autonomous midwifery practice). In rural maternity hospitals, CNMs practice alongside obstetricians in 86%, and with family physicians in 44%, of hospitals. Fourteen percent of all respondents planned recruitment to increase the number of midwives at their hospital, although many, especially in smaller hospitals, noted challenges in doing so. DISCUSSION CNMs play a crucial role in the maternity care workforce in rural US hospitals. The participation of CNMs in birth attendance varies by hospital birth volume and across state settings. Interprofessional practice is common for CNMs attending births in rural hospitals, and administrators hope to increase the number of midwives in rural maternity practice.

The use of hospitalists by small rural hospitals: Results of a national survey

Research on hospitalist programs has primarily focused on large, urban facilities. To fill a gap in the literature on hospitalist use in rural hospitals, the authors conducted a national survey of 402 rural hospitals with 100 or fewer beds that had reported having hospitalists. The survey examined reasons for using hospitalists, characteristics of hospitalist practices, and the impacts of hospitalist use in rural settings. Rural hospitals most commonly establish a hospitalist program to address medical staff requests, call coverage, and quality issues. Respondents report positive impacts of hospitalist programs on quality of care and primary care physician recruitment and retention, but mixed financial impacts. Assessments of the impact of hospitalists in rural hospitals need to take into account the variety of practitioner specialties functioning as hospitalists, the amount of time they spend as hospitalists, and the multiple roles they play in the rural hospital and community.

Factors associated with high-risk rural women giving birth in non-NICU hospital settings

Objective:To identify risk factors for childbirth in a facility without neonatal intensive care unit (NICU) capacity among high-risk rural women.Study Design:Using data on all maternal hospitalizations for rural residents in nine states (2010, 2012), we performed logit regression, focusing on women with multiple gestation and preterm birth. We defined a ‘local’ hospital as any maternity hospital within 30 miles (or the nearest hospital).Results:Rural women with preterm births and multiple gestation pregnancies were less likely to give birth in a hospital with NICU capacity if no local hospital had this capacity. Adjusted odds of giving birth in a NICU hospital were lower among women ⩽age 20 (AOR 0.87 (95% CI 0.77, 0.98)), Medicaid beneficiaries (0.81 (0.75, 0.89)), uninsured women (0.44 (0.32, 0.61)) and black women (0.60 (0.50, 0.71)).Conclusions:Among high-risk rural pregnant women without local NICU access, younger, low-income, and black women had lower odds of using NICU hospitals.

Association between loss of hospital-based obstetric services and birth outcomes in rural counties in the United States

Importance Hospital-based obstetric services have decreased in rural US counties, but whether this has been associated with changes in birth location and outcomes is unknown. Objective To examine the relationship between loss of hospital-based obstetric services and location of childbirth and birth outcomes in rural counties. Design, Setting, and Participants A retrospective cohort study, using county-level regression models in an annual interrupted time series approach. Births occurring from 2004 to 2014 in rural US counties were identified using birth certificates linked to American Hospital Association Annual Surveys. Participants included 4 941 387 births in all 1086 rural counties with hospital-based obstetric services in 2004. Exposures Loss of hospital-based obstetric services in the county of maternal residence, stratified by adjacency to urban areas. Main Outcomes and Measures Primary outcomes were county rates of (1) out-of-hospital births; (2) births in hospitals without obstetric units; and (3) preterm births (<37 weeks’ gestation). Results Between 2004 and 2014, 179 rural counties lost hospital-based obstetric services. Of the 4 941 387 births studied, the mean (SD) maternal age was 26.2 (5.8) years. A mean (SD) of 75.9% (23.2%) of women who gave birth were non-Hispanic white, and 49.7% (15.6%) were college graduates. Rural counties not adjacent to urban areas that lost hospital-based obstetric services had significant increases in out-of-hospital births (0.70 percentage points [95% CI, 0.30 to 1.10]); births in a hospital without an obstetric unit (3.06 percentage points [95% CI, 2.66 to 3.46]); and preterm births (0.67 percentage points [95% CI, 0.02 to 1.33]), in the year after loss of services, compared with those with continual obstetric services. Rural counties adjacent to urban areas that lost hospital-based obstetric services also had significant increases in births in a hospital without obstetric services (1.80 percentage points [95% CI, 1.55 to 2.05]) in the year after loss of services, compared with those with continual obstetric services, and this was followed by a decreasing trend (−0.19 percentage points per year [95% CI, −0.25 to −0.14]). Conclusions and Relevance In rural US counties not adjacent to urban areas, loss of hospital-based obstetric services, compared with counties with continual services, was associated with increases in out-of-hospital and preterm births and births in hospitals without obstetric units in the following year; the latter also occurred in urban-adjacent counties. These findings may inform planning and policy regarding rural obstetric services.