Inequities in Availability of Evidence-Based Birth Supports to Improve Perinatal Health for Socially Vulnerable Rural Residents

Social Vulnerability Index and Health Outcomes in the United States: A Systematic Review

The Centers for Disease Control and Prevention created the Social Vulnerability Index (SVI) for the purpose of allocating resources in times of emergency based on social determinants of health (SDOH). The purpose of this systematic review was to evaluate how the SVI tool has been applied in health care literature focused on health in the United States (US). A systematic literature review was conducted in 7 research databases with an 11-year time frame reflecting the launch of SVI, with the last search completed on September 29, 2022. Studies were included that involved humans, health, SVI, and conducted in the US. Articles were excluded if the SVI was used in COVID-19, disaster, pandemic, environment, or hazards. A total of 47 articles were included in the systematic review. The majority of studies analyzed individual/population health outcomes in clinical, surgical, mortality, or health promotion areas. The majority of studies showed a relationship between neighborhood-level SDOH and health outcomes. Study authors reported strengths, limitations, and recommendations of the SVI tool. A potential limitation of the study was the exclusion of studies that used the SVI related to disaster. The SVI represents a powerful tool to assess neighborhood-level SDOH and examine upstream drivers health outcomes with direct implications for research, policy, and practice.

A Scoping Review and Assessment of the Area-Level Composite Measures That Estimate Social Determinants of Health Across the United States

OBJECTIVES

Evidence-informed population health initiatives often leverage data from various sources, such as epidemiologic surveillance data and administrative datasets. Recent interest has arisen in using area-level composite measures describing a community's social risks to inform the development and implementation of health policies, including payment reform initiatives. Our objective was to capture the breadth of available area-level composite measures that describe social determinants of health (SDH) and have potential for application in population health and policy work.

METHODS

We conducted a scoping review of the scientific literature from 2010 to 2022 to identify multifactorial indices and rankings reflected in peer-reviewed literature that estimate SDH and that have publicly accessible data sources. We discovered several additional composite measures incidental to the scoping review process. Literature searches for each composite measure aimed to contextualize common applications in public health investigations.

RESULTS

From 491 studies, we identified 31 composite measures and categorized them into 8 domains: environmental conditions and pollution, opportunity and infrastructure, deprivation and well-being, COVID-19, rurality, food insecurity, emergency response and community resilience, and health. Composite measures are applied most often as an independent variable associated with disparities, risk factors, and/or outcomes affecting individuals, populations, communities, and health systems.

CONCLUSIONS

Area-level composite measures describing SDH have been applied to wide-ranging population health work. Social risk indicators may enable policy makers, evaluators, and researchers to better assess community risks and needs, thereby facilitating the evidence-informed development, implementation, and study of initiatives that aim to improve population health.

Inequities in Adequacy of Prenatal Care and Shifts in Rural/Urban Differences Early in the COVID-19 Pandemic

BACKGROUND

Adequate prenatal care is vital for positive maternal, fetal, and child health outcomes; however, differences in prenatal care utilization exist, particularly among rural populations. The COVID-19 pandemic accelerated the adoption of telehealth in prenatal care, but its impact on the adequacy of care remains unclear.

METHODS

Using Pregnancy Risk Assessment Monitoring System (PRAMS) data, this study examined prenatal care adequacy during the early-pandemic year (2020) and pre-pandemic years (2016-2019) and investigated rural-urban inequities. Logistic regression models assessed the association between the pandemic year and prenatal care adequacy, and considered barriers to virtual care as a covariate.

RESULTS

The sample consisted of 163,758 respondents in 2016-2019 and 42,314 respondents in 2020. Overall, the study participants were 12% less likely to receive adequate prenatal visits during the early-pandemic year (2020) compared with 2016-2019 (adjusted odds ratio [aOR] = 0.88; 95% confidence interval [CI] [0.86, 0.91]). Respondents in rural areas had lower odds of receiving adequate prenatal care compared with those in urban areas during both pre-pandemic years (aOR = 0.90; 95% CI [0.88, 0.93]) and the early-pandemic year (aOR = 0.94; 95% CI [0.88, 0.99]). However, after adjusting for barriers to virtual care, the difference between rural and urban areas in the early-pandemic year became nonsignificant (aOR = 0.93; 95% CI [0.78, 1.11]). Barriers to virtual care, including lack of phones, data, computers, internet access, and private space, were significantly associated with inadequate prenatal care.

CONCLUSION

During the early-pandemic year, PRAMS respondents experienced reduced adequacy of prenatal care. Although rural-urban inequities persisted, our results suggest that existing barriers to virtual care explained these inequities. Telehealth interventions that minimize these barriers could potentially enhance health care utilization among pregnant people.

The Availability of Midwifery Care in Rural United States Communities

INTRODUCTION

Access to pregnancy-related and childbirth-related health care for rural residents is limited by health workforce shortages in the United States. Although midwives are key pregnancy and childbirth care providers, the current landscape of the rural midwifery workforce is not well understood. The goal of this analysis was to describe the availability of local midwifery care in rural US communities.

METHODS

We developed and conducted a national survey of rural US hospitals with current or recently closed childbirth services. Maternity unit managers or administrators at 292 rural hospitals were surveyed from March to August 2021, with 133 hospitals responding (response rate 46%; 93 currently offering childbirth services, 40 recently closed childbirth services). This cross-sectional analysis describes whether rural hospitals with current or prior childbirth services had midwifery care with certified nurse-midwives available locally and whether rural communities with and without midwifery care differed by hospital-level and county-level characteristics.

RESULTS

Among hospitals surveyed, 55% of those with current and 75% of those with prior childbirth services reported no locally available midwifery care. Of the 93 rural communities with current hospital-based childbirth services, those without midwifery care were more likely to have lower populations (37% vs 33%); majority populations that were Black, Indigenous, and people of color (24% vs 10%); and hospitals where at least 50% of births were Medicaid funded (77% vs 64%), compared with communities with midwifery care. Conversely, communities with midwifery care more often had greater than 30% of patients traveling more than 30 miles for hospital-based childbirth services (38% vs 28%).

DISCUSSION

More than half of rural hospitals surveyed reported no locally available midwifery care, and availability differed by hospital-level and county-level characteristics. Efforts to ensure pregnancy and childbirth care access for rural birthing people should include attention to the availability of local midwifery care.

Health insurance coverage and experiences of intimate partner violence and postpartum abuse screening among rural US residents who gave birth 2016-2020

PURPOSE

Intimate partner violence (IPV) is elevated among rural residents and contributes to maternal morbidity and mortality. Postpartum health insurance expansion efforts could address multiple causes of maternal morbidity and mortality, including IPV. The objective of this study was to describe the relationship between perinatal health insurance, IPV, and postpartum abuse screening among rural US residents.

METHODS

Using 2016-2020 data on rural residents from the Pregnancy Risk Assessment Monitoring System, we assessed self-report of experiencing physical violence by an intimate partner and rates of abuse screening at postpartum visits. Health insurance at childbirth and postpartum was categorized as private, Medicaid, or uninsured. We also measured insurance transitions from childbirth to postpartum (continuous private, continuous Medicaid, Medicaid to private, and Medicaid to uninsured).

FINDINGS

IPV rates varied by health insurance status at childbirth, with the highest rates among Medicaid beneficiaries (7.7%), compared to those who were uninsured (1.6%) or privately insured (1.6%). When measured by insurance transitions, the highest IPV rates were reported by those with continuous Medicaid coverage (8.6%), followed by those who transitioned from Medicaid at childbirth to private insurance (5.3%) or no insurance (5.9%) postpartum. Nearly half (48.1%) of rural residents lacked postpartum abuse screening, with the highest proportion among rural residents who were uninsured at childbirth (66.1%) or postpartum (52.1%).

CONCLUSION

Rural residents who are insured by Medicaid before or after childbirth are at elevated risk for IPV. Medicaid policy efforts to improve maternal health should focus on improving detection and screening for IPV among rural residents.

Effects of Breastfeeding Peer Counseling on County-Level Breastfeeding Rates Among WIC Participants in Greater Minnesota

OBJECTIVE

U.S. breastfeeding outcomes consistently fall short of public health targets, with lower rates among rural and low-income people, as well as participants in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC). The U.S. Department of Agriculture funded a subset of local WIC agencies in Minnesota to implement Breastfeeding Peer Counseling Programs (BFPCs) aimed at improving breastfeeding rates. We examined the impact of BFPCs on breastfeeding rates among WIC participants in Greater Minnesota (outside the Minneapolis-St. Paul metropolitan area).

METHODS

We used data from the Minnesota WIC Information System for the years 2012 through 2019 to estimate the impact of peer counseling on breastfeeding duration using difference-in-differences models. Additionally, we examined results among rural counties and assessed the possibility of spillover effects by stratifying whether a county without BFPCs bordered one with BFPCs.

RESULTS

Availability of BFPCs resulted in a 3.1 to 3.4 percentage-point increase in breastfeeding rates at 3 months and a 3.2 to 3.7 percentage-point increase in breastfeeding rates at 6 months among WIC participants in Greater Minnesota. Among rural counties, results showed a statistically significant 4.1 to 5.2 percentage-point increase in breastfeeding duration rates. Both border and nonborder counties experienced positive impacts of BFPCs on breastfeeding rates, suggesting wide-ranging program spillover effects.

CONCLUSIONS

BFPCs had a significant positive impact on breastfeeding duration. Findings indicate an opportunity for improving rural breastfeeding rates through increased funding for WIC BFPCs.

A Novel Approach to Developing Disease and Outcome-Specific Social Risk Indices

INTRODUCTION

A variety of industry composite indices are employed within health research in risk-adjusted outcome measures and to assess health-related social needs. During the COVID-19 pandemic, the relationships among risk adjustment, clinical outcomes, and composite indices of social risk have become relevant topics for research and healthcare operations. Despite the widespread use of these indices, composite indices are often comprised of correlated variables and therefore may be affected by information duplicity of their underlying risk factors.

METHODS

A novel approach is proposed to assign outcome- and disease group-driven weights to social risk variables to form disease and outcome-specific social risk indices and apply the approach to the county-level Centers for Disease Control and Prevention social vulnerability factors for demonstration. The method uses a subset of principal components reweighed through Poisson rate regressions while controlling for county-level patient mix. The analyses use 6,135,302 unique patient encounters from 2021 across seven disease strata.

RESULTS

The reweighed index shows reduced root mean squared error in explaining county-level mortality in five of the seven disease strata and equivalent performance in the remaining strata compared with the reduced root mean squared error using the current Centers for Disease Control and Prevention Social Vulnerability Index as a benchmark.

CONCLUSIONS

A robust method is provided, designed to overcome challenges with current social risk indices, by accounting for redundancy and assigning more meaningful disease and outcome-specific variable weights.

Obstetric Volume and Severe Maternal Morbidity Among Low-Risk and Higher-Risk Patients Giving Birth at Rural and Urban US Hospitals

Importance

Identifying hospital factors associated with severe maternal morbidity (SMM) is essential to clinical and policy efforts.

Objective

To assess associations between obstetric volume and SMM in rural and urban hospitals and examine whether these associations differ for low-risk and higher-risk patients.

Design, Setting, and Participants

This retrospective cross-sectional study of linked vital statistics and patient discharge data was conducted from 2022 to 2023. Live births and stillbirths (≥20 weeks' gestation) at hospitals in California (2004-2018), Michigan (2004-2020), Pennsylvania (2004-2014), and South Carolina (2004-2020) were included. Data were analyzed from December 2022 to May 2023.

Exposures

Annual birth volume categories (low, medium, medium-high, and high) for hospitals in urban (10-500, 501-1000, 1001-2000, and >2000) and rural (10-110, 111-240, 241-460, and >460) counties.

Main Outcome and Measures

The main outcome was SMM (excluding blood transfusion); covariates included age, payer status, educational attainment, race and ethnicity, and obstetric comorbidities. Analyses were stratified for low-risk and higher-risk obstetric patients based on presence of at least 1 clinical comorbidity.

Results

Among more than 11 million urban births and 519 953 rural births, rates of SMM ranged from 0.73% to 0.50% across urban hospital volume categories (high to low) and from 0.47% to 0.70% across rural hospital volume categories (high to low). Risk of SMM was elevated for patients who gave birth at rural hospitals with annual birth volume of 10 to 110 (adjusted risk ratio [ARR], 1.65; 95% CI, 1.14-2.39), 111 to 240 (ARR, 1.37; 95% CI, 1.10-1.70), and 241 to 460 (ARR, 1.26; 95% CI, 1.05-1.51), compared with rural hospitals with greater than 460 births. Increased risk of SMM occurred for low-risk and higher-risk obstetric patients who delivered at rural hospitals with lower birth volumes, with low-risk rural patients having notable discrepancies in SMM risk between low (ARR, 2.32; 95% CI, 1.32-4.07), medium (ARR, 1.66; 95% CI, 1.20-2.28), and medium-high (ARR, 1.68; 95% CI, 1.29-2.18) volume hospitals compared with high volume (>460 births) rural hospitals. Among hospitals in urban counties, there was no significant association between birth volume and SMM for low-risk or higher-risk obstetric patients.

Conclusions and Relevance

In this cross-sectional study of births in US rural and urban counties, risk of SMM was elevated for low-risk and higher-risk obstetric patients who gave birth in lower-volume hospitals in rural counties, compared with similar patients who gave birth at rural hospitals with greater than 460 annual births. These findings imply a need for tailored quality improvement strategies for lower volume hospitals in rural communities.

Racial Disparities in Respectful Maternity Care During Pregnancy and Birth After Cesarean in Rural United States

OBJECTIVE

To describe the experiences of pregnancy and birth after cesarean of women who live in rural areas of the United States, including access to vaginal birth after cesarean (VBAC), type of maternity care provider, travel times, autonomy in decision making, and respectful maternity care.

DESIGN

Retrospective observational study.

SETTING

Online questionnaire of women who gave birth in the United States.

PARTICIPANTS

Women (N = 1,711) with histories of cesarean and subsequent births within 5 years of participating.

METHODS

We calculated descriptive and bivariate statistics by identified areas of residence and stratified measures of autonomy and respectful maternity care by self-identification as a member of a racialized group. We applied qualitative descriptive analysis to responses to an open-ended survey question.

RESULTS

A total of 299 (17.5%) participants identified their areas of residence as rural. Similar percentages of rural and metropolitan participants were able to plan VBAC (p = .88). More rural participants than metropolitan participants reported travel times of more than 60 minutes to give birth (p < .001), and fewer had obstetricians (p = .002) or doulas (p = .03). Rural participants from racialized groups experienced significantly less respectful maternity care than White, non-Hispanic rural participants and all metropolitan participants (p = .04). Qualitative data illustrating the main findings are included.

CONCLUSIONS

Our findings highlight challenges faced by rural residents accessing VBAC and help explain why rates of VBAC in rural areas remain low. We suggest a range of clinical and policy strategies to improve access to VBAC in rural areas and to improve the quality of maternity care for racialized women who live in rural areas.