Racial/ethnic differences in preterm perinatal outcomes

Resource and Service Use after Discharge among Infants Born 22-25 Weeks' Gestation at the First High-risk Infant Follow-up Visit

OBJECTIVE

To examine resource and service use after discharge among infants born extraordinarily preterm in California who attended high-risk infant follow-up (HRIF) clinic by 12 months corrected age (CA).

METHODS

We included infants born 2010-2017 between 22+0/7 and 25+6/7 weeks' gestational age (GA) in the California Perinatal Quality Care Collaborative (CPQCC) and CPQCC-California Children's Services HRIF databases. We evaluated rates of hospitalization, surgeries, medications, equipment, medical service and special service use, and referrals. We examined factors associated with receiving >2 medical services, and >1 special service.

RESULTS

3941 of 5284 infants received a HRIF visit by 12 months CA. Infants born at earlier GAs used more medications, equipment, medical services, and special services and had higher rates of referral to medical and special services at the first HRIF visit. Infants with major morbidity, surgery, caregiver concerns, and mothers with more years of education had higher odds of receiving >2 medical services. Infants with Black maternal race, younger maternal age, female sex, and discharge from lower level NICUs had lower odds of receiving >2 medical services. Infants with more educated mothers, multiple gestation, major morbidity, surgery, caregiver concerns, and discharge from lower level NICUs had increased odds of receiving a special service.

CONCLUSIONS

Infants born extraordinarily preterm have substantial resource use after discharge. High resource utilization was associated with maternal/sociodemographic factors and expected clinical factors. Early functional and service use information is valuable to parents and underscores the need for NICU providers to appropriately prepare and refer families.

Racial and geographic disparities in neonatal brain care

In this review, we explore race-based disparities in neonatology and their impact on brain injury and neurodevelopmental outcomes. We discuss the historical context of healthcare discrimination, focusing on the post-Civil War era and the segregation of healthcare facilities. We highlight the increasing disparity in infant mortality rates between Black and White infants, with premature birth being a major contributing factor, and emphasize the role of prenatal factors such as metabolic syndrome and toxic stress in affecting neonatal health. Furthermore, we examine the geographic and historical aspects of racial disparities, including the consequences of redlining and limited access to healthcare facilities or nutritious food options in Black communities. Finally, we delve into the higher incidence of brain injuries in Black neonates, as well as disparities in adverse neurodevelopmental outcome. This evidence underscores the need for comprehensive efforts to address systemic racism and provide equitable access to healthcare resources.

Disparity drivers, potential solutions, and the role of a health equity dashboard in the neonatal intensive care unit: a qualitative study

OBJECTIVE

Racial/ethnic disparities are well-described in the neonatal intensive care unit (NICU). We explored expert opinion on their etiology, potential solutions, and the ability of health equity dashboards to meaningfully capture NICU disparities.

STUDY DESIGN

We conducted 12 qualitative semi-structured interviews, purposively selecting a diverse group of neonatal experts. We used grounded theory to develop codes, shape interviews, and conduct analysis.

RESULT

We identified three sources of disparity: interpersonal bias, care process and institutional barriers, and social determinants of health, particularly as they affect parental engagement in the NICU. Proposed solutions included racial/cultural concordance, bolstering hospital-based resources, and policy interventions. Health equity dashboards were viewed as useful but limited, because clinical metrics do not account for many of the aforementioned sources of disparities.

CONCLUSION

Equity dashboards serve as a motivational starting point for quality improvement; future iterations may require novel, qualitative data sources to identify underlying etiologies of NICU disparities.

Motivations for and against Participation in Neonatal Research: Insights from Interviews of Diverse Parents Approached for Neonatal Research in the US

OBJECTIVE

To describe parents' motivations for and against participation in neonatal research, including the views of those who declined participation.

STUDY DESIGN

We performed 44 semi-structured, qualitative interviews of parents approached for neonatal research. Here we describe their motivations for and against participation.

RESULTS

Altruism was an important reason parents chose to participate. Some hoped participation in research would benefit their infant. Burdens of participation to the family, such as transportation to follow up (distinct from risks/burdens to the infant), were often deciding factors among those who declined participation. Perceived risks to the infant were reasons against participation, but parents often did not differentiate between baseline risks and incremental risk of study participation. Concerns regarding their infant being treated like a "guinea pig" were common among those who declined. Finally, historical abuses and institutional racism were reported as important concerns by some research decliners from minoritized populations.

CONCLUSIONS

Within a diverse sample of parents approached to enroll their infant in neonatal research, motivations for and against participation emerged, which may be targets of future interventions. These motivations included reasons for participation which we may hope to encourage, such as altruism. They also included reasons against participation, which we may hope to, as feasible, eliminate, mitigate, or at least acknowledge. These findings can help clinical trialists, regulators, and funders attempting to improve neonatal research recruitment processes.

Experiences and preferences for learning about neonatal research: insights from parent interviews

INTRODUCTION

Parents struggle with being asked to participate in neonatal research. Past work has largely failed to include views of minoritized parents, low-socioeconomic status parents, and those who declined research. We aimed to describe parents' preferences related to learning about eligibility for neonatal research.

METHODS

Qualitative interviews of parents who were asked to enroll their infant in neonatal research. Themes related to parental experiences and preferences for learning about neonatal research were identified using content analysis.

RESULTS

Many parents desired greater involvement of their clinical team. Emotions at the time of recruitment were critically important to parents' experience, where were deeply impacted by interpersonal relationships with research staff.

DISCUSSION

Increased involvement of the clinical team and greater sensitivity to the stressors around parent and infant conditions at the time of recruitment for neonatal research should be considered by those attempting to improve recruitment for neonatal research.

The Effects of Health Disparities on Neonatal Outcomes

The history of racism in the United States was established with slavery, and the carry-over effect continues to impact health care through structural and institutional racism. Racial segregation and redlining have impacted access to quality health care, thereby impacting prematurity and infant mortality rates. Health disparities also impact neonatal morbidities such as intraventricular hemorrhage and necrotizing enterocolitis and the family care experience including the establishment of breastfeeding and health care provider interactions.

Racial and ethnic inequities in the quality of paediatric care in the USA: a review of quantitative evidence

Racial and ethnic inequities in paediatric care have received increased research attention over the past two decades, particularly in the past 5 years, alongside an increased societal focus on racism. In this Series paper, the first in a two-part Series focused on racism and child health in the USA, we summarise evidence on racial and ethnic inequities in the quality of paediatric care. We review studies published between Jan 1, 2017 and July 31, 2022, that are adjusted for or stratified by insurance status to account for group differences in access, and we exclude studies in which differences in access are probably driven by patient preferences or the appropriateness of intervention. Overall, the literature reveals widespread patterns of inequitable treatment across paediatric specialties, including neonatology, primary care, emergency medicine, inpatient and critical care, surgery, developmental disabilities, mental health care, endocrinology, and palliative care. The identified studies indicate that children from minoritised racial and ethnic groups received poorer health-care services relative to non-Hispanic White children, with most studies drawing on data from multiple sites, and accounting for indicators of family socioeconomic position and clinical characteristics (eg, comorbidities or condition severity). The studies discussed a range of potential causes for the observed disparities, including implicit biases and differences in site of care or clinician characteristics. We outline priorities for future research to better understand and address paediatric treatment inequities and implications for practice and policy. Policy changes within and beyond the health-care system, discussed further in the second paper of this Series, are essential to address the root causes of treatment inequities and to promote equitable and excellent health for all children.

Race and Ethnicity of Infants Enrolled in Neonatal Clinical Trials: A Systematic Review

Importance

Representativeness of populations within neonatal clinical trials is crucial to moving the field forward. Although racial and ethnic disparities in research inclusion are well documented in other fields, they are poorly described within neonatology.

Objective

To describe the race and ethnicity of infants included in a sample of recent US neonatal clinical trials and the variability in this reporting.

Evidence Review

A systematic search of US neonatal clinical trials entered into Cochrane CENTRAL 2017 to 2021 was conducted. Two individuals performed inclusion determination, data extraction, and quality assessment independently with discrepancies adjudicated by consensus.

Findings

Of 120 studies with 14 479 participants that met the inclusion criteria, 75 (62.5%) included any participant race or ethnicity data. In the studies that reported race and ethnicity, the median (IQR) percentage of participants of each background were 0% (0%-1%) Asian, 26% (9%-42%) Black, 3% (0%-12%) Hispanic, 0% (0%-0%) Indigenous (eg, Alaska Native, American Indian, and Native Hawaiian), 0% (0%-0%) multiple races, 57% (30%-68%) White, and 7% (1%-21%) other race or ethnicity. Asian, Black, Hispanic, and Indigenous participants were underrepresented, while White participants were overrepresented compared with a reference sample of the US clinical neonatal intensive care unit (NICU) population from the Vermont Oxford Network. Many participants were labeled as other race or ethnicity without adequate description. There was substantial variability in terms and methods of reporting race and ethnicity data. Geographic representation was heavily skewed toward the Northeast, with nearly one-quarter of states unrepresented.

Conclusions and Relevance

These findings suggest that neonatal research may perpetuate inequities by underrepresenting Asian, Black, Hispanic, and Indigenous neonates in clinical trials. Studies varied in documentation of race and ethnicity, and there was regional variation in the sites included. Based on these findings, funders and clinical trialists are advised to consider a 3-point targeted approach to address these issues: prioritize identifying ways to increase diversity in neonatal clinical trial participation, agree on a standardized method to report race and ethnicity among neonatal clinical trial participants, and prioritize the inclusion of participants from all regions of the US in neonatal clinical trials.

Racial and Ethnic Disparities in the Medical Home for Children Born Premature in the National Survey of Children's Health

OBJECTIVE

Children born premature are more likely to be from minoritized racial and ethnic groups and face chronic health and developmental problems. The medical home aims to comprehensively address health and social needs of all families. This study evaluates racial and ethnic disparities in the prevalence of a medical home among children born premature compared to children born full-term.

METHODS

A 2017-18 National Survey of Children's Health data set was used to calculate the medical home performance measure and subcomponents for children aged 0 to 17 born premature (n = 5633) or full-term (n = 45,819). Chi square and logistic regression assessed magnitude and significance of variations by race and ethnicity and prematurity status.

RESULTS

Prematurity prevalence differed by race and ethnicity (12.0% non-Hispanic Black [NHB], 12.8% Hispanic, 11.1% Multiracial/Other, 11.0% non-Hispanic White [NHW]). Minoritized children born premature had lower adjusted odds of receiving care in a medical home compared to NHW peers (eg, NHB adjusted odds ratio [aOR] 0.54 [95% confidence interval {CI}: 0.38-0.76] and Hispanic aOR 0.56 [95% CI: 0.40-0.79]). Differences were greater in magnitude among children born premature compared to full-term peers (eg, NHB premature aOR 0.54 [95% CI: 0.38-0.76] vs NHB full-term aOR 0.67 [95% CI: 0.58-0.78]), with similar results for "personal doctor/nurse" and "usual sick care."

CONCLUSIONS

Racial and ethnic disparities exist in the medical home among children born premature, some more pronounced than full-term peers. To deliver equitable care for all children, efforts are needed to expand access to and improve the medical home, including reliable routine and sick care and stronger family-provider relationships.

Prenatal and perinatal factors associated with neonatal neurobehavioral profiles in the ECHO Program

BACKGROUND

Single-cohort studies have identified distinct neurobehavioral profiles that are associated with prenatal and neonatal factors based on the NICU Network Neurobehavioral Scale (NNNS). We examined socioeconomic, medical, and substance use variables as predictors of NNNS profiles in a multi-cohort study of preterm and term-born infants with different perinatal exposures.

METHODS

We studied 1112 infants with a neonatal NNNS exam from the Environmental influences on Child Health Outcomes (ECHO) consortium. We used latent profile analysis to characterize infant neurobehavioral profiles and generalized estimating equations to determine predictors of NNNS profiles.

RESULTS

Six distinct neonatal neurobehavioral profiles were identified, including two dysregulated profiles: a hypo-aroused profile (16%) characterized by lethargy, hypotonicity, and nonoptimal reflexes; and a hyper-aroused profile (6%) characterized by high arousal, excitability, and stress, with low regulation and poor movement quality. Infants in the hypo-aroused profile were more likely to be male, have younger mothers, and have mothers who were depressed prenatally. Infants in the hyper-aroused profile were more likely to be Hispanic/Latino and have mothers who were depressed or used tobacco prenatally.

CONCLUSIONS

We identified two dysregulated neurobehavioral profiles with distinct perinatal antecedents. Further understanding of their etiology could inform targeted interventions to promote positive developmental outcomes.

IMPACT

Prior research on predictors of neonatal neurobehavior have included single-cohort studies, which limits generalizability of findings. In a multi-cohort study of preterm and term-born infants, we found six distinct neonatal neurobehavioral profiles, with two profiles being identified as dysregulated. Hypo- and hyper-aroused neurobehavioral profiles had distinct perinatal antecedents. Understanding perinatal factors associated with dysregulated neurobehavior could help promote positive developmental outcomes.

Addressing Structural Racism in Pediatric Clinical Practice

Structural racism is the inequitable allocation of various social determinants of health to different communities. Exposure to this and other discrimination levied from intersectional identities is the primary driver of disproportionately adverse health outcomes for minoritized children and their families. Pediatric clinicians must vigilantly identify and mitigate racism in health care systems and delivery, assess for any impact of patient and family exposure to racism and direct them to appropriate health resources, foster an environment of inclusion and respect, and ensure that all care is delivered through a race-conscious lens with the utmost cultural humility and shared decision-making.

Impact of race on heart rate characteristics monitoring in very low birth weight infants

BACKGROUND

A multicenter RCT showed that displaying a heart rate characteristics index (HRCi) predicting late-onset sepsis reduced mortality for VLBW infants. We aimed to assess whether HRCi display had a differential impact for Black versus White infants.

METHODS

We performed secondary data analysis of Black and White infants enrolled in the HeRO RCT. We evaluated the predictive performance of the HRCi for infants with Black or White maternal race. Using models adjusted for birth weight, we assessed outcomes and interventions for a race × randomization interaction.

RESULTS

Among 2607 infants, Black infants had lower birth weight, gestational age, length of stay, and ventilator days, while sepsis and mortality were similar. The HRCi performed equally for sepsis prediction in Black and White infants. We found no differential effect of randomization by race on sepsis, mortality, antibiotic days, length of stay, or ventilator days. However, there was a differential randomization effect by race for blood cultures per patient: White RR 1.11 (95% CrI 1.04-1.18), Black RR 1.00 (0.93-1.07).

CONCLUSIONS

The HRCi performed similarly for sepsis prediction in Black and White infants. Randomization to HRCi display increased blood cultures in White but not in Black infants, while the impact on other outcomes or interventions was similar.

IMPACT

Predictive analytics, such as heart rate characteristics (HRC) monitoring for late-onset neonatal sepsis, should have equal impact among patients of different race. Infants with Black or White maternal race randomized to HRC display had similar outcomes, but randomization to the study arm increased a related clinical intervention, blood cultures, in White but not in Black infants. This study provides evidence of a differential effect of predictive models on clinical care by race. The work will promote consideration and analysis of equity in the implementation of predictive analytics.

Transmission of negative biases through social commentary included in neonatal intensive care unit progress notes

OBJECTIVE

To determine how the perception of families elicited after reading progress note social commentary differs by patient race.

STUDY DESIGN

We retrospectively performed content analysis of social commentary in physician progress notes for neonatal intensive care unit patients hospitalized from 2018-2019. Neonatologists blinded to patient race rated how commentary impacted their perception of the patient's family on a 5-point Likert scale. Frequency of negative ratings was compared across reported race using chi-squared tests.

RESULTS

We reviewed charts of 460 neonates. In total, 225 (49%) contained social commentary beyond parents' names. Twelve neonatologists rated how commentaries impacted their perception of the patient's family; 79%, 18%, and 3% were rated neutrally, negatively, and positively, respectively. Frequency of negative ratings was significantly greater among American Indian/Alaska Native than other patients (35% vs. 22%, p < 0.001).

CONCLUSIONS

Physician documentation of social commentary in patient notes may reflect and perpetuate implicit biases that contribute to race-based healthcare disparities.

Disparities and Equity Dashboards in the Neonatal Intensive Care Unit: A Qualitative Study of Expert Perspectives

Objective

Racial/ethnic disparities are well-described in the neonatal intensive care unit (NICU). We explore expert opinion on their root causes, potential solutions, and the ability of health equity dashboards to meaningfully address NICU disparities.

Study Design

We conducted 12 qualitative semi-structured interviews, purposively selecting a diverse group of neonatal experts. We used grounded theory to develop codes, shape interviews, and conduct analysis.

Result

Participants identified three sources of disparity: interpersonal bias, care process barriers, and social determinants of health, particularly as they affect parental engagement in the NICU. Proposed solutions included racial/cultural concordance, bolstering hospital-based resources, and policy interventions. Health equity dashboards were viewed as useful but limited because clinical metrics do not account for many of the aforementioned sources of disparities.

Conclusion

Equity dashboards serve as a motivational starting point for quality improvement; future iterations may require novel, qualitative data sources to identify underlying etiologies of NICU disparities.

Racial Inequities in Sepsis Mortality Among Children in the United States

BACKGROUND

Racial inequities influence health outcomes in the United States, but their impact on sepsis outcomes among children is understudied. We aimed to evaluate for racial inequities in sepsis mortality using a nationally representative sample of pediatric hospitalizations.

METHODS

This population-based, retrospective cohort study used the 2006, 2009, 2012 and 2016 Kids' Inpatient Database. Eligible children 1 month to 17 years old were identified using sepsis-related International Classification of Diseases, Ninth Revision or International Classification of Diseases, Tenth Revision codes. We used modified Poisson regression to evaluate the association between patient race and in-hospital mortality, clustering by hospital and adjusting for age, sex and year. We used Wald tests to assess for modification of associations between race and mortality by sociodemographic factors, geographic region and insurance status.

RESULTS

Among 38,234 children with sepsis, 2555 (6.7%) died in-hospital. Compared with White children, mortality was higher among Hispanic (adjusted relative risk: 1.09; 95% confidence interval: 1.05-1.14), Asian/Pacific Islander (1.17, 1.08-1.27) and children from other racial minority groups (1.27, 1.19-1.35). Black children had similar mortality to White children overall (1.02, 0.96-1.07), but higher mortality in the South (7.3% vs. 6.4%; P < 0.0001). Hispanic children had higher mortality than White children in the Midwest (6.9% vs. 5.4%; P < 0.0001), while Asian/Pacific Islander children had higher mortality than all other racial categories in the Midwest (12.6%) and South (12.0%). Mortality was higher among uninsured children than among privately insured children (1.24, 1.17-1.31).

CONCLUSIONS

Risk of in-hospital mortality among children with sepsis in the United States differs by patient race, geographic region and insurance status.

Racial Disparities in Breastmilk Receipt and Extremely Low Gestational Age Neonatal Morbidities in an Asian Pacific Islander Population

BACKGROUND

Racial disparities in breastmilk provision and neonatal morbidities of extreme prematurity have been documented in previous studies but are not as well-documented in Asian and Pacific Islander (API) infants. The objectives of this study were to evaluate a predominantly API neonatal intensive care unit (NICU) population for racial disparities in (1) the receipt of breastmilk within 24 h of admission and at discharge and (2) neonatal morbidities among infants ≤ 28 weeks gestational age.

METHODS

A retrospective chart review of 2528 infants from 2018 to 2020 born at the largest level 3 NICU in Honolulu, Hawai'i, was conducted. Multivariable logistic regression analysis was performed on NICU outcomes to calculate adjusted odds ratios (aOR) and confidence intervals (CI).

RESULTS

Native Hawaiian (NH) (aOR 0.73 [0.54, 0.98]), Pacific Islander (PI) (aOR 0.57 [0.41, 0.79]), and Filipino infants (aOR 0.66 [0.49, 0.89]) were less likely to receive breastmilk at discharge compared to Asian infants. PI infants were also more likely to experience necrotizing enterocolitis (aOR 7.89 [1.07, 58.10]) and intraventricular hemorrhage (aOR 3.86 [1.15, 13.02]) compared to Asian infants.

CONCLUSION

In a predominantly API population, disparities in breastmilk receipt and neonatal morbidities exist among NH, PI, and Filipino infants in the NICU. Our findings call for better understanding of the underlying inequities to guide directed efforts, including standardization of care through staff trainings on implicit biases and trauma-informed care, as well as provision of culturally sensitive education and lactation support for these patients.

The Role of Work as a Social Determinant of Health in Mother's Own Milk Feeding Decisions for Preterm Infants: A State of the Science Review

In the United States, 10% of infants are born preterm (PT; <37 weeks gestational age) each year and are at higher risk of complications compared to full term infants. The burden of PT birth is borne disproportionately by Black versus non-Black families, with Black mothers significantly more likely to give birth to a PT infant. One proven strategy to improve short- and long-term health outcomes in PT infants is to feed mother's own milk (MOM; breast milk from the mother). However, mothers must make decisions about work and MOM provision following PT birth, and more time spent in paid work may reduce time spent in unpaid activities, including MOM provision. Non-Black PT infants are substantially more likely than Black PT infants to receive MOM during the birth hospitalization, and this disparity is likely to be influenced by the complex decisions mothers of PT infants make about allocating their time between paid and unpaid work. Work is a social determinant of health that provides a source of income and health insurance coverage, and at the same time, has been shown to create disparities through poorer job quality, lower earnings, and more precarious employment in racial and ethnic minority populations. However, little is known about the relationship between work and disparities in MOM provision by mothers of PT infants. This State of the Science review synthesizes the literature on paid and unpaid work and MOM provision, including: (1) the complex decisions that mothers of PT infants make about returning to work, (2) racial and ethnic disparities in paid and unpaid workloads of mothers, and (3) the relationship between components of job quality and duration of MOM provision. Important gaps in the literature and opportunities for future research are summarized, including the generalizability of findings to other countries.

Neonatal mortality and disparities within the military health system

INTRODUCTION

Racial disparity exists in U.S. neonatal mortality; Black, non-Hispanic neonates are at higher risk of death. We aim to examine overall and race-specific neonatal mortality within the Military Health System (MHS).

METHODS

Retrospective cohort study of infants delivered within the MHS between 2013-2015. Variables were extracted from the Military Health System Data Repository.

RESULTS

There were 320,283 live births within the MHS from 2013-2015; 588 neonates died, a death rate of 1.84/1000. Cohort neonatal mortality and incidence of preterm delivery (7.2%) were lower than concurrent U.S.

STATISTICS

Black, non-Hispanic neonates had a 2-fold increased risk of death (OR: 2.11; 95% CI 1.73-2.56, p < 0.001) over White, non-Hispanic neonates. Officer versus enlisted rank conferred no difference in neonatal mortality (OR: 0.88; 95% CI 0.74-1.03).

CONCLUSION

Neonatal mortality within the MHS is lower than in the U.S. Despite universal insurance coverage and access to care, racial disparity persists. Risk of death is not modified by socioeconomic status. These findings highlight the need for critical examination of healthcare equity within neonatal-perinatal medicine.

Artificial and human intelligence for early identification of neonatal sepsis

Artificial intelligence may have a role in the early detection of sepsis in neonates. Machine learning can identify patterns that predict high or increasing risk for clinical deterioration from a sepsis-like illness. In developing this potential addition to NICU care, careful consideration should be given to the data and methods used to develop, validate, and evaluate prediction models. When an AI system alerts clinicians to a change in a patient's condition that warrants a bedside evaluation, human intelligence and experience come into play to determine an appropriate course of action: evaluate and treat or wait and watch closely. With intelligently developed, validated, and implemented AI sepsis systems, both clinicians and patients stand to benefit. IMPACT: This narrative review highlights the application of AI in neonatal sepsis prediction. It describes issues in clinical prediction model development specific to this population. This article reviews the methods, considerations, and literature on neonatal sepsis model development and validation. Challenges of AI technology and potential barriers to using sepsis AI systems in the NICU are discussed.

Structural racism is associated with adverse postnatal outcomes among Black preterm infants

BACKGROUND

Structural racism contributes to racial disparities in adverse perinatal outcomes. We sought to determine if structural racism is associated with adverse outcomes among Black preterm infants postnatally.

METHODS

Observational cohort study of 13,321 Black birthing people who delivered preterm (gestational age 22-36 weeks) in California in 2011-2017 using a statewide birth cohort database and the American Community Survey. Racial and income segregation was quantified by the Index of Concentration at the Extremes (ICE) scores. Multivariable generalized estimating equations regression models were fit to test the association between ICE scores and adverse postnatal outcomes: frequent acute care visits, readmissions, and pre- and post-discharge death, adjusting for infant and birthing person characteristics and social factors.

RESULTS

Black birthing people who delivered preterm in the least privileged ICE tertiles were more likely to have infants who experienced frequent acute care visits (crude risk ratio [cRR] 1.3 95% CI 1.2-1.4), readmissions (cRR 1.1 95% CI 1.0-1.2), and post-discharge death (cRR 1.9 95% CI 1.2-3.1) in their first year compared to those in the privileged tertile. Results did not differ significantly after adjusting for infant or birthing person characteristics.

CONCLUSION

Structural racism contributes to adverse outcomes for Black preterm infants after hospital discharge.

IMPACT STATEMENT

Structural racism, measured by racial and income segregation, was associated with adverse postnatal outcomes among Black preterm infants including frequent acute care visits, rehospitalizations, and death after hospital discharge. This study extends our understanding of the impact of structural racism on the health of Black preterm infants beyond the perinatal period and provides reinforcement to the concept of structural racism contributing to racial disparities in poor postnatal outcomes for preterm infants. Identifying structural racism as a primary cause of racial disparities in the postnatal period is necessary to prioritize and implement appropriate structural interventions to improve outcomes.

Effects of race and ethnicity on perinatal outcomes in high-income and upper-middle-income countries: an individual participant data meta-analysis of 2 198 655 pregnancies

BACKGROUND

Existing evidence on the effects of race and ethnicity on pregnancy outcomes is restricted to individual studies done within specific countries and health systems. We aimed to assess the impact of race and ethnicity on perinatal outcomes in high-income and upper-middle-income countries, and to ascertain whether the magnitude of disparities, if any, varied across geographical regions.

METHODS

For this individual participant data (IPD) meta-analysis we used data from the International Prediction of Pregnancy Complications (IPPIC) Network of studies on pregnancy complications; the full dataset comprised 94 studies, 53 countries, and 4 539 640 pregnancies. We included studies that reported perinatal outcomes (neonatal death, stillbirth, preterm birth, and small-for-gestational-age babies) in at least two racial or ethnic groups (White, Black, south Asian, Hispanic, or other). For our two-step random-effects IPD meta-analysis, we did multiple imputations for confounder variables (maternal age, BMI, parity, and level of maternal education) selected with a directed acyclic graph. The primary outcomes were neonatal mortality and stillbirth. Secondary outcomes were preterm birth and a small-for-gestational-age baby. We estimated the association of race and ethnicity with perinatal outcomes using a multivariate logistic regression model and reported this association with odds ratios (ORs) and 95% CIs. We also did a subgroup analysis of studies by geographical region.

FINDINGS

51 studies from 20 high-income and upper-middle-income countries, comprising 2 198 655 pregnancies, were eligible for inclusion in this IPD meta-analysis. Neonatal death was twice as likely in babies born to Black women than in babies born to White women (OR 2·00, 95% CI 1·44-2·78), as was stillbirth (2·16, 1·46-3·19), and babies born to Black women were at increased risk of preterm birth (1·65, 1·46-1·88) and being small for gestational age (1·39, 1·13-1·72). Babies of women categorised as Hispanic had a three-times increased risk of neonatal death (OR 3·34, 95% CI 2·77-4·02) than did those born to White women, and those born to south Asian women were at increased risk of preterm birth (OR 1·26, 95% CI 1·07-1·48) and being small for gestational age (1·61, 1·32-1·95). The effects of race and ethnicity on preterm birth and small-for-gestational-age babies did not vary across regions.

INTERPRETATION

Globally, among underserved groups, babies born to Black women had consistently poorer perinatal outcomes than White women after adjusting for maternal characteristics, although the risks varied for other groups. The effects of race and ethnicity on adverse perinatal outcomes did not vary by region.

FUNDING

National Institute for Health and Care Research, Wellbeing of Women.

Racial and ethnic disparities in outcomes after NICU discharge: An equity-focused model

Significant racial and ethnic disparities exist in birth outcomes and complications related to prematurity. However, little is known about racial and ethnic variations in health outcomes after premature infants are discharged from the neonatal intensive care unit (NICU). We propose a novel, equity-focused conceptual model to guide future evaluations of post-discharge outcomes that centers on a multi-dimensional, comprehensive view of health, which we call thriving. We then apply this model to existing literature on post-discharge inequities, revealing a need for rigorous analysis of drivers and strength-based, longitudinal outcomes.

Racial disparities in the development of comorbid conditions after preterm birth: A narrative review

Despite recognition and attempts to reduce racial disparities in perinatal outcomes, Black infants are still disproportionately represented among those who are born preterm. Postnatal investigations of racial disparities in comorbidities and outcomes after preterm birth are increasing, although their results and interpretations are conflicting. In the present review, we 1.) identify important methodological limitations of that literature 2.) summarize the conflicting literature investigating racial disparities, specifically Black-white differences, in postnatal comorbidities and outcomes after preterm birth 3.) describe mechanisms by which racism operates to contextualize our understanding to inform future work to actively reduce disparities in preterm birth and subsequently, its complications.

Racial Disparities in Donor Human Milk Feedings: A Study Using Electronic Medical Records

INTRODUCTION

The aim of this study was to evaluate differences in the use of pasteurized donor human milk (PDHM) by maternal race-ethnicity during postpartum hospitalization using electronic medical records (EMRs).

MATERIALS AND METHODS

A retrospective cohort study of all live-born infants at our academic research institution from July 1, 2014, to June 30, 2016, was conducted. EMR data were used to determine whether each infant received mother's own milk (MOM), PDHM, or formula. These data were stratified based on whether the infant received treatment in the Neonatal Critical Care Center. Generalized estimating equation models were used to calculate the odds of receiving PDHM by maternal race-ethnicity, adjusting for gestational age, birth weight, insurance, preferred language, nulliparity, and mode of delivery.

RESULTS

Infant feeding data were available for 7097 infants, of whom 49% were fed only MOM during their postpartum hospitalization. Among the 15.9% of infants admitted to neonatal critical care, infants of non-Hispanic Black (odds ratio [OR] 0.47, 95% confidence interval [CI] 0.31-0.72), Hispanic (OR 0.65, 95% CI 0.36-1019), and Other (OR 0.63, 95% CI 0.32-1.26) mothers had lower rates of PDHM feedings than infants of non-Hispanic White mothers in the adjusted models. Among well infants, the use of PDHM was lower among non-Hispanic Black and Hispanic mothers (OR 0.25, 95% CI 0.18-0.36, and OR 0.38, 95% CI 0.26-0.56) compared with non-Hispanic White mothers.

CONCLUSIONS

Inequities in exclusive human milk feeding and use of PDHM by maternal race-ethnicity were identified. Antiracist interventions are needed to promote equitable access to skilled lactation support and counseling for PDHM use.

Cervical pessary and cerclage placement for preterm birth prevention and cervicovaginal microbiome changes

INTRODUCTION

Our objective was to compare the vaginal microbiome in low-risk and high-risk pregnant women and to explore a potential association between vaginal microbiome and preterm birth.

MATERIAL AND METHODS

A pilot, consecutive, longitudinal, multicenter study was conducted in pregnant women at 18-22 weeks of gestation. Participants were assigned to one of three groups: control (normal cervix), pessary (cervical length ≤25 mm) and cerclage (cervical length ≤25 mm or history of preterm birth). Analysis and comparison of vaginal microbiota as a primary outcome was performed at inclusion and at 30 weeks of gestation, along with a follow-up of pregnancy and perinatal outcomes. We assessed the vaginal microbiome of pregnant women presenting a short cervix with that of pregnant women having a normal cervix, and compared the vaginal microbiome of women with a short cervix before and after placement of a cervical pessary or a cervical cerclage.

RESULTS

The microbiome of our control cohort was dominated by Lactobacillus crispatus and inners. Five community state types were identified and microbiome diversity did not change significantly over 10 weeks in controls. On the other hand, a short cervix was associated with a lower microbial load and higher microbial richness, and was not correlated with Lactobacillus relative abundance. After intervention, the cerclage group (n = 19) had a significant increase in microbial richness and a shift towards community state types driven by various bacterial species, including Lactobacillus mulieris, unidentified Bifidobacterium or Enterococcus. These changes were not significantly observed in the pessary (n = 26) and control (n = 35) groups. The cerclage group had more threatened preterm labor episodes and poorer outcomes than the control and pessary groups.

CONCLUSIONS

These findings indicate that a short cervix is associated with an altered vaginal microbiome community structure. The use of a cerclage for preterm birth prevention, as compared with a pessary, was associated with a microbial community harboring a relatively low abundance of Lactobacillus, with more threatened preterm labor episodes, and with poorer clinical outcomes.

Trends in Active Treatment of Live-born Neonates Between 22 Weeks 0 Days and 25 Weeks 6 Days by Gestational Age and Maternal Race and Ethnicity in the US, 2014 to 2020

IMPORTANCE

Birth in the periviable period between 22 weeks 0 days and 25 weeks 6 days' gestation is a major source of neonatal morbidity and mortality, and the decision to initiate active life-saving treatment is challenging.

OBJECTIVE

To assess whether the frequency of active treatment among live-born neonates in the periviable period has changed over time and whether active treatment differed by gestational age at birth and race and ethnicity.

DESIGN, SETTING, AND PARTICIPANTS

Serial cross-sectional descriptive study using National Center for Health Statistics natality data from 2014 to 2020 for 61 908 singleton live births without clinical anomalies between 22 weeks 0 days and 25 weeks 6 days in the US.

EXPOSURES

Year of delivery, gestational age at birth, and race and ethnicity of the pregnant individual, stratified as non-Hispanic Asian/Pacific Islander, non-Hispanic Black, Hispanic/Latina, and non-Hispanic White.

MAIN OUTCOMES AND MEASURES

Active treatment, determined by whether there was an attempt to treat the neonate and defined as a composite of surfactant therapy, immediate assisted ventilation at birth, assisted ventilation more than 6 hours in duration, and/or antibiotic therapy. Frequencies, mean annual percent change (APC), and adjusted risk ratios (aRRs) were estimated.

RESULTS

Of 26 986 716 live births, 61 908 (0.2%) were periviable live births included in this study: 5% were Asian/Pacific Islander, 37% Black, 24% Hispanic, and 34% White; and 14% were born at 22 weeks, 21% at 23 weeks, 30% at 24 weeks, and 34% at 25 weeks. Fifty-two percent of neonates received active treatment. From 2014 to 2020, the overall frequency (mean APC per year) of active treatment increased significantly (3.9% [95% CI, 3.0% to 4.9%]), as well as among all racial and ethnic subgroups (Asian/Pacific Islander: 3.4% [95% CI, 0.8% to 6.0%]); Black: 4.7% [95% CI, 3.4% to 5.9%]; Hispanic: 4.7% [95% CI, 3.4% to 5.9%]; and White: 3.1% [95% CI, 1.1% to 4.4%]) and among each gestational age range (22 weeks: 14.4% [95% CI, 11.1% to 17.7%] and 25 weeks: 2.9% [95% CI, 1.5% to 4.2%]). Compared with neonates born to White individuals (57.0%), neonates born to Asian/Pacific Islander (46.2%; risk difference [RD], -10.81 [95% CI, -12.75 to -8.88]; aRR, 0.82 [95% CI, [0.79-0.86]), Black (51.6%; RD, -5.42 [95% CI, -6.36 to -4.50]; aRR, 0.90 [95% CI, 0.89 to 0.92]), and Hispanic (48.0%; RD, -9.03 [95% CI, -10.07 to -7.99]; aRR, 0.83 [95% CI, 0.81 to 0.85]) individuals were significantly less likely to receive active treatment.

CONCLUSIONS AND RELEVANCE

From 2014 to 2020 in the US, the frequency of active treatment among neonates born alive between 22 weeks 0 days and 25 weeks 6 days significantly increased, and there were differences in rates of active treatment by race and ethnicity.

Survival of infants born at periviable gestation: The US national database

Background

Substantial differences exist in the approach to resuscitating infants born at periviable gestation. Evaluation of current survival may help guide prenatal counselling and provide accurate expectations of clinical outcomes. We aimed to assess the US national survival trends in periviable infants born at gestational age (GA) ≤24 weeks.

Methods

We used de-identified patient data obtained from the US Healthcare Cost and Utilization Project (HCUP) from 2007 to 2018. All infants with documented GA ≤24 weeks were included. The Cochran-Armitage test was used for trend analyses. Regression analyses were conducted for variables associated with survival.

Findings

A total of 44,628,827 infant records were identified with 124,345 (0.28%) infants born ≤24 weeks; of those, 77,050 infants <24 weeks and 47,295 infants had completed 24 weeks. Survival rates for infants <24 weeks and with completed 24 weeks were 15.4% and 71.6%, respectively, with higher survival over the years (Z = 9.438, P<0.001 & Z = 3.30, P<0.001, respectively). Survival was lower in males compared to females (aOR = 0.96, CI: 0.93-0.99 & aOR = 0.94, CI: 0.92-0.96, respectively) and with private insurance compared to public insurance (aOR = 0.74, CI: 0.71-0.77 & aOR = 0.67, CI: 0.65-0.69, respectively). Survival was higher when birth weight was >500 g compared to ≤500 g (aOR = 4.62, CI:3.23-5.02 & aOR = 5.44, CI: 4.59-5.84, respectively). Black (aOR = 1.33, CI: 1.31-1.36 & aOR = 1.24, CI: 1.20-1.32, respectively) and Hispanic (aOR = 1.29, CI: 1.27-1.32 & aOR = 1.27, CI: 1.22-1.30, respectively) had higher survival than White.

Interpretation

There is a national increase in survival over the years in infants born at periviable GA. BW >500 is associated with >4 folds higher survival compared to ≤500 g. The results of this study should be cautiously interpreted as long-term outcomes are unknown.

Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

The amniotic fluid proteome predicts imminent preterm delivery in asymptomatic women with a short cervix

Preterm birth, the leading cause of perinatal morbidity and mortality, is associated with increased risk of short- and long-term adverse outcomes. For women identified as at risk for preterm birth attributable to a sonographic short cervix, the determination of imminent delivery is crucial for patient management. The current study aimed to identify amniotic fluid (AF) proteins that could predict imminent delivery in asymptomatic patients with a short cervix. This retrospective cohort study included women enrolled between May 2002 and September 2015 who were diagnosed with a sonographic short cervix (< 25 mm) at 16–32 weeks of gestation. Amniocenteses were performed to exclude intra-amniotic infection; none of the women included had clinical signs of infection or labor at the time of amniocentesis. An aptamer-based multiplex platform was used to profile 1310 AF proteins, and the differential protein abundance between women who delivered within two weeks from amniocentesis, and those who did not, was determined. The analysis included adjustment for quantitative cervical length and control of the false-positive rate at 10%. The area under the receiver operating characteristic curve was calculated to determine whether protein abundance in combination with cervical length improved the prediction of imminent preterm delivery as compared to cervical length alone. Of the 1,310 proteins profiled in AF, 17 were differentially abundant in women destined to deliver within two weeks of amniocentesis independently of the cervical length (adjusted p-value < 0.10). The decreased abundance of SNAP25 and the increased abundance of GPI, PTPN11, OLR1, ENO1, GAPDH, CHI3L1, RETN, CSF3, LCN2, CXCL1, CXCL8, PGLYRP1, LDHB, IL6, MMP8, and PRTN3 were associated with an increased risk of imminent delivery (odds ratio > 1.5 for each). The sensitivity at a 10% false-positive rate for the prediction of imminent delivery by a quantitative cervical length alone was 38%, yet it increased to 79% when combined with the abundance of four AF proteins (CXCL8, SNAP25, PTPN11, and MMP8). Neutrophil-mediated immunity, neutrophil activation, granulocyte activation, myeloid leukocyte activation, and myeloid leukocyte-mediated immunity were biological processes impacted by protein dysregulation in women destined to deliver within two weeks of diagnosis. The combination of AF protein abundance and quantitative cervical length improves prediction of the timing of delivery compared to cervical length alone, among women with a sonographic short cervix.

Maternal language disparities in neonatal intensive care unit outcomes

OBJECTIVE

To examine associations of maternal primary language with neonatal intensive care unit (NICU) outcomes (mother's milk at discharge, necrotizing enterocolitis [NEC], late-onset sepsis, weight gain) DESIGN: We performed a retrospective cohort study of mother-infant dyads (<34 weeks' gestation) in 9 NICUs (1/2016-12/2019), examining associations of maternal language (English [ref], Spanish, Other) with NICU outcomes, adjusting for birth weight for gestational age z-score, race/ethnicity, maternal age, and clustering by hospital.

RESULTS

Among 1402 mothers, 85% spoke English, 7% spoke Spanish, and 7% spoke another language. Compared to English, infants with Spanish-speaking mothers had slower growth (-0.34 z-score units [-0.58, -0.10]). Infants with other non-English-speaking mothers had increased mother's milk at discharge (aOR 1.48 [1.18, 1.85]), NEC (aOR 1.43 [1.05, 1.95]), late-onset sepsis (aOR 2.84) [1.67, 4.83] and slower growth (-0.17 z-score units [-0.29, -0.05]).

CONCLUSIONS

After adjustments, preterm infants with non-English-speaking mothers had worse outcomes than infants with English-speaking mothers.

Antiracism in the Field of Neonatology: A Foundation and Concrete Approaches

Neonatal patients and families from historically marginalized and discriminated communities have long been documented to have differential access to health care, disparate health care, and as a result, inequitable health outcomes. Fundamental to these processes is an understanding of what race and ethnicity represent for patients and how different levels of racism act as social determinants of health. The NICU presents a unique opportunity to intervene with regard to the detrimental ways in which structural, institutional, interpersonal, and internalized racism affect the health of newborn infants. The aim of this article is to provide neonatal clinicians with a foundational understanding of race, racism, and antiracism within medicine, as well as concrete ways in which health care professionals in the field of neonatology can contribute to antiracism and health equity in their professional careers.

Health Equity and Disparities in ROP Care: A Need for Systematic Evaluation

Retinopathy of prematurity (ROP) is a vasoproliferative retinal disorder that can have devastating visual sequelae if not managed appropriately. From an ophthalmology standpoint, ROP care is complex, since it spans multiple care settings and providers, including those in the neonatal intensive care unit (NICU), step down nurseries, and the outpatient clinic setting. This requires coordination and communication between providers, ancillary staff, and most importantly, effective communication with the patient's family members and caregivers. Often, factors related to the social determinants of health play a significant role in effective communication and care coordination with the family, and it is important for ophthalmologists to recognize these risk factors. The aim of this article is to (1) review the literature related to disparities in preterm birth outcomes and infants at risk for ROP; (2) identify barriers to ROP care and appropriate follow up, and (3) describe patient-oriented solutions and future directions for improving ROP care through a health equity lens.

Racial/ethnic and educational inequities in restrictive abortion policy variation and adverse birth outcomes in the United States

BACKGROUND

To examine racial/ethnic and educational inequities in the relationship between state-level restrictive abortion policies and adverse birth outcomes from 2005 to 2015 in the United States.

METHODS

Using a state-level abortion restrictiveness index comprised of 18 restrictive abortion policies, we conducted a retrospective longitudinal analysis examining whether race/ethnicity and education level moderated the relationship between the restrictiveness index and individual-level probabilities of preterm birth (PTB) and low birthweight (LBW). Data were obtained from the 2005-2015 National Center for Health Statistics Period Linked Live Birth-Infant Death Files and analyzed with linear probability models adjusted for individual- and state-level characteristics and state and year fixed-effects.

RESULTS

Among 2,250,000 live births, 269,253 (12.0%) were PTBs and 182,960 (8.1%) were LBW. On average, states had approximately seven restrictive abortion policies enacted from 2005 to 2015. Black individuals experienced increased probability of PTB with additional exposure to restrictive abortion policies compared to non-Black individuals. Similarly, those with less than a college degree experienced increased probability of LBW with additional exposure to restrictive abortion policies compared to college graduates. For all analyses, inequities worsened as state environments grew increasingly restrictive.

CONCLUSION

Findings demonstrate that Black individuals at all educational levels and those with fewer years of education disproportionately experienced adverse birth outcomes associated with restrictive abortion policies. Restrictive abortion policies may compound existing racial/ethnic, socioeconomic, and intersecting racial/ethnic and socioeconomic perinatal and infant health inequities.

Racism and pediatric health outcomes

Racism- a system operating at the intrapersonal, interpersonal, institutional, and structural levels- is a serious threat to the health and wellbeing of children and adolescents. This narrative review highlights racism as a social determinant of health, and describes how racism breeds disparate pediatric health outcomes in infant health, asthma, Type 1 diabetes, mental health, and pediatric surgical conditions. Key examples include the association of residential racial segregation and the alarming infant mortality rate among Black infants as well as the role of redlining and discriminatory housing practices on asthma morbidity among Black children and adolescents. Furthermore, inequitable care practices such as (1) racial and ethnic disparities in insulin pump usage in patients with Type 1 diabetes, (2) lower rates pharmacotherapy initiation in racialized children with mental health disorders, and (3) decreased pain medication management and confirmatory imaging in Black children with acute appendicitis, highlight the role of interpersonal racism in propagating poor health outcomes. An urgent call to action is needed to address pediatric health inequities and ensure all children can live healthy lives. Key strategies must tackle racism at the individual, institutional, and structural levels and include building a diverse workforce, prioritizing research to describe the impact of racism on pediatric health outcomes, initiating improvement efforts to close equity gaps, building community partnerships, co-designing solutions alongside patients and families, and advocating for policy change to address the social conditions that impact children and adolescents of color.

Hospital Quality of Care and Racial and Ethnic Disparities in Unexpected Newborn Complications

OBJECTIVES

To investigate racial and ethnic differences in unexpected, term newborn morbidity and the influence of hospital quality on disparities.

METHODS

We used 2010-2014 birth certificate and discharge abstract data from 40 New York City hospitals in a retrospective cohort study of 483 834 low-risk (term, singleton, birth weight ≥2500 g, without preexisting fetal conditions) neonates. We classified morbidity according to The Joint Commission's unexpected newborn complications metric and used multivariable logistic regression to compare morbidity risk among racial and ethnic groups. We generated risk-standardized complication rates for each hospital using mixed-effects logistic regression to evaluate quality, ranked hospitals on this measure, and assessed differences in the racial and ethnic distribution of births across facilities.

RESULTS

The unexpected complications rate was 48.0 per 1000 births. Adjusted for patient characteristics, morbidity risk was higher among Black and Hispanic infants compared with white infants (odds ratio: 1.5 [95% confidence interval 1.3-1.9]; odds ratio: 1.2 [95% confidence interval 1.1-1.4], respectively). Among the 40 hospitals, risk-standardized complications ranged from 25.3 to 162.8 per 1000 births. One-third of Black and Hispanic women gave birth in hospitals ranking in the highest-morbidity tertile, compared with 10% of white and Asian American women (P < .001).

CONCLUSIONS

Black and Hispanic women were more likely to deliver in hospitals with high complication rates than were white or Asian American women. Findings implicate hospital quality in contributing to preventable newborn health disparities among low-risk, term births. Quality improvement targeting routine obstetric and neonatal care is critical for equity in perinatal outcomes.

Clinician-family relationships may impact neonatal intensive care: clinicians' perspectives

OBJECTIVE

Collaborative clinician-family relationships are necessary for the delivery of successful patient- and family-centered care (PFCC) in the NICU. Challenging clinician-family relationships may undermine such collaboration and the potential impacts on patient care are unknown.

STUDY DESIGN

Consistent caregivers were surveyed to describe their relationships and collaboration with families of infants hospitalized ≥ 28 days. Medical record review collected infant and family characteristics hypothesized to impact relationships. Mixed methods analysis was performed.

RESULTS

Clinicians completed 243 surveys representing 77 families. Clinicians reported low collaboration with families who were not at the bedside and/or did not speak English. Clinicians perceived most clinician-family relationships impact the infant's hospital course. Negative impacts included communication challenges, mistrust or frustration with the team and disruptions to patient care.

CONCLUSION

This study identifies features of clinician-family relationships that may negatively impact an infant's NICU stay. Targeting supports for these families is necessary to achieve effective PFCC.

Ethnic differences in postmaturity syndrome in newborns. Reflections on different durations of gestation

OBJECTIVE

To describe the prevalence, by weeks of gestation, of post-maturity signs in newborns by ethnic origins.

STUDY DESIGN

Observational cohort study (2001-2018), of all consecutive singleton births delivered at Center Hospitalier Universitaire Hospitalier Sud Reunion's maternity (Reunion Island, French overseas department, Indian Ocean). The presence of clinical post-maturity signs was recorded by a week of gestation using Clifford's clinical post-maturity signs in newborns (desquamation, dry skin, wrinkling fingers and cracked skin).

RESULTS

Of the 67,463 singleton births during the period, 58,503 newborns were from Reunion island, 5756 were of European origin (mainland France), and 4061 newborns from the archipelago of Comoros (North of Madagascar). Mean duration of gestation was 276 days in Caucasian women, 272 days in Comorian mothers and 273 days in Reunionese (p < .001). Post-maturity is defined by WHO as gestation greater than 293 days (41 weeks + 6 days). At 41 weeks (287 days) 12.1% of Caucasian babies presented post-maturity signs and 22.4% meconium-stained liquid versus respectively, 22.8 and 27.1% in Reunionese and 44 and 39.8% in Comorians (p < .001).

CONCLUSION

Among African (Black) pregnancies, duration of gestation was approximately 7 days shorter than in Caucasian (White) pregnancies. In the Reunionese intermixed population and Comorians, the gestation was shorter by 3-4 days. Black newborns presented severe clinical post-maturity signs beginning around 40 weeks and 4-6 days, while it was 1 week later in white infants. Consequences of these differences, with respect to clinical outcomes, are discussed.

Do maternal demographics and prenatal history impact the efficacy of betamethasone therapy for threatened preterm labor?

BACKGROUND

Betamethasone (BMZ) is used to accelerate fetal lung maturation in women with threatened preterm birth, but its efficacy is variable and limited by the lack of patient individualization in its dosing and administration. To determine sources of variability and potential opportunities for individualization of therapy, the objective of this study was to evaluate maternal factors associated with development of neonatal respiratory distress syndrome (RDS) in a cohort of women who received betamethasone.

METHODS

This study prospectively enrolled women, gestational ages 23-34 weeks, who received betamethasone for threatened preterm birth. Maternal demographics, prenatal history, and neonatal outcomes were abstracted from hospital records. RDS was the primary outcome. Associations between RDS diagnosis and maternal demographics, prenatal history, and betamethasone dosing were evaluated in a case-control analysis and multivariable regression adjusted for gestational age at delivery. Secondary analyses limited the cohort to women who delivered within 1 or 2 weeks of betamethasone dosing.

RESULTS

Of 209 deliveries, 90 (43 %) resulted in neonatal RDS. Within the overall cohort and controlling for gestational age at birth, RDS was only associated with cesarean births compared to vaginal births (adjusted OR 1.17 [1.06-1.29]). Route of delivery was also the only significant factor related to RDS in the 83 neonates delivered within 7 days of BMZ dosing. However, among 101 deliveries within 14 days of betamethasone dosing and controlling for gestational age at birth, women who experienced preterm premature rupture of membranes (PPROM) had lower RDS rates than those without PPROM (57.9 % vs. 80.2 %, adjusted OR 0.81 [0.67-0.99]). Maternal age, BMI, race, and ethnicity were not associated with RDS in the regression models.

CONCLUSIONS

Of maternal characteristics analyzed, only delivery by cesarean was associated with neonatal RDS after antenatal betamethasone use.

The Association of Paternal Race and Ethnicity with Adverse Pregnancy Outcomes in a Contemporary U.S. Cohort

OBJECTIVE

Maternal racial and ethnic disparities exist in obstetric outcomes. The contribution of paternal race and ethnicity toward obstetric outcomes has been less well documented. The objective of this study was to investigate the association between paternal race and ethnicity and several adverse pregnancy outcomes.

STUDY DESIGN

This was a retrospective cohort of birth data from the CDC National Vital Statistics, years 2013-2017. All singleton live births were included in the analysis. Records with missing paternal race and ethnicity were excluded. The primary dependent variables were the following adverse maternal and perinatal outcomes: gestational diabetes, hypertensive disorder of pregnancy, preterm birth <37 weeks, cesarean delivery, low birth weight <2,500 g, 5-minute Apgar's score <7, admission to neonatal intensive care unit (NICU), and assisted ventilation at > 6 hours of life. The main exposure was paternal race and ethnicity, which was grouped into non-Hispanic white, non-Hispanic black, Hispanic, and other. Other race and ethnicity category included: American Indian, Alaskan Native, Asian, Native Hawaiian, or other Pacific Islander. Univariable and multivariable analyses were done to determine whether paternal race and ethnicity was independently associated with adverse pregnancy outcomes.

RESULTS

A total of 16,482,745 births were included. In univariable analysis, all adverse obstetric outcomes were significantly associated with paternal race and ethnicity. In multivariable analysis, controlling for maternal and paternal demographic characteristics and maternal clinical factors, paternal race and ethnicity remained significantly associated with the majority of the adverse pregnancy outcomes. The strongest association was seen with: (1) paternal non-Hispanic black race and ethnicity, and higher rates of LBW and preterm birth (Odds ratio [OR] = 1.25, 95% CI: 1.24-1.27 and OR = 1.14, 95% CI: 1.13-1.15, respectively); (2) paternal Hispanic race and ethnicity and lower rates of 5-minute Apgar's score <7, and assisted ventilation at >6 hours of life (OR = 0.78, 95% CI: 0.77-0.79, and OR = 0.77, 95% CI: 0.75-0.78, respectively); and (3) other paternal race and ethnicity and higher rates of gestational diabetes, but lower rates of hypertensive disorder of pregnancy and assisted ventilation >6 hours of life (OR = 1.26, 95% CI: 1.25-1.27; OR = 0.79, 95% CI: 0.78-0.80; and OR = 0.80, 95% CI: 0.78-0.82, respectively). All associations were in comparison to paternal non-Hispanic white race and ethnicity.

CONCLUSION

Paternal race and ethnicity has an independent association with adverse obstetric outcomes. The pathway and the extent of the paternal racial influence are not fully understood and deserve additional research.

Intertwined disparities: Applying the maternal-infant dyad lens to advance perinatal health equity

Differences in the quality of delivery hospital care contribute to persistent, intertwined racial and ethnic disparities in both maternal and infant health. Despite the shared causal pathways and overlapping burden of maternal and infant health disparities, little research on perinatal quality of care has addressed obstetric and neonatal care jointly to improve outcomes and reduce health inequities for the maternal-infant dyad. In this paper, we review the role of hospital quality in shaping perinatal health outcomes, and investigate how a framework that considers the mother-infant dyad can enhance our understanding of the full burden of obstetric and neonatal disparities on health and society. We conclude with a discussion of how integrating a maternal-infant dyad lens into research and clinical intervention to improve quality of care can move the needle on disparity reduction for both women and infants around the time of birth and throughout the life course.

Unequal care: Racial/ethnic disparities in neonatal intensive care delivery

Advances in neonatal intensive care have improved outcomes for preterm newborns, but significant racial/ethnic disparities persist. Neonatal disparities have their origin in a complex set of factors that include systemic racism and structural disadvantages endured by minority families, but differential quality of care in the neonatal intensive care unit (NICU) remains an important and modifiable source of disparity. NICU care has been shown to be segregated and unequal: Black and Hispanic infants are more likely to be cared for in lower quality NICUs and may receive worse care within a NICU. To eliminate disparities in care and outcomes, it is important to identify and address the mechanisms that lead to lower quality care for minority preterm infants. In this review, we identify improvements in both technical (clinical) and relational (engaging and supporting families) processes of care as critical to better outcomes for minority infants and families.

Race and neonatal respiratory morbidity in the late preterm period

BACKGROUND

Prematurity is one of the leading causes of perinatal morbidity and mortality. Some studies suggest that respiratory disease may differ by race in early preterm infants. However, the role of race in late preterm neonatal morbidity is not yet established.

OBJECTIVE

The objective of our study was to determine whether neonatal respiratory morbidity differs by race in neonates born late preterm.

STUDY DESIGN

This was a secondary analysis of a randomized trial of women at high risk for late preterm delivery (Antenatal Late Preterm Steroids). Our study was limited to women with nonanomalous, singleton gestations, delivering between 34+0 to 36+6 weeks. Women were categorized into 4 groups by race: Black, White, Asian, or other/mixed. The primary outcome was a neonatal composite of treatment in the first 72 hours (continuous positive airway pressure or high-flow nasal cannula >2 hours, oxygen >4 hours, extracorporeal membrane oxygenation or mechanical ventilation) or stillbirth or neonatal death before 72 hours. The secondary outcomes included severe respiratory morbidity (the primary outcome extending continuous positive airway pressure or high-flow nasal cannula to >12 continuous hours and oxygen to at least 24 continuous hours), respiratory distress syndrome, transient tachypnea of the newborn, apnea, neonatal intensive care unit admission, bronchopulmonary dysplasia, and surfactant administration. The primary and secondary outcomes were assessed in the active (steroid) and placebo groups separately. We fit a logistic regression model to adjust for confounders related to respiratory morbidity.

RESULTS

Of a total of 2331 included women, 26.9% (n=627) were Black/African American, 57.1% (n=1333) White, 3.56% (n=83) Asian, and 12.36% (n=288) were other/mixed. In the placebo group, the rate of the primary outcome was significantly higher in Whites (18.6%) and Asians (22.8%) compared with the African American/Black group (12.3%) (P=.03). Adjusting for confounders, the primary outcome was not significant between the groups. The primary predictor for respiratory morbidity was a prior pregnancy with neonatal respiratory morbidity. Findings were similar in the steroid group, but severe respiratory morbidity was less common in Black infants compared with White infants (adjusted odds ratio, 0.45; 95% confidence interval, 0.24-0.83). However, a prior pregnancy with neonatal respiratory complications was no longer associated with respiratory morbidity after receipt of betamethasone.

CONCLUSION

Late preterm respiratory morbidity was similar between racial groups. Although a history of pregnancy with previous neonatal respiratory disease is the strongest risk factor for recurrence, this risk factor is mitigated by the receipt of steroids.

Disparities in severe neonatal morbidity and mortality between Aboriginal and non-Aboriginal births in Western Australia: a decomposition analysis

BACKGROUND

The health disadvantages faced by Australian Aboriginal peoples are evidenced in early life, although few studies have focused on the reasons for population-level inequalities in more severe adverse outcomes. This study aimed to examine the scale of disparity in severe neonatal morbidity (SNM) and mortality between Aboriginal and non-Aboriginal births and quantify the relative contributions of important maternal and infant factors.

METHOD

A retrospective cohort study with singleton live births (≥32 weeks' gestation) was conducted using Western Australia linked whole population datasets, from 1999 to 2015. Aboriginal status was determined based on the mothers' self-reported ethnic origin. An Australian validated indicator was adapted to identify neonates with SNM. The Oaxaca-Blinder method was employed to calculate the contribution of each maternal and infant factor to the disparity in SNM and mortality.

RESULTS

Analyses included 425 070 births, with 15 967 (3.8%) SNM and mortality cases. The disparity in SNM and mortality between Aboriginal and non-Aboriginal births was 2.9 percentage points (95% CI 2.6 to 3.2). About 71% of this gap was explained by differences in modelled factors including maternal area of residence (23.8%), gestational age (22.2%), maternal age (7.5%) and antenatal smoking (7.2%).

CONCLUSIONS

There is a considerable disparity in SNM and mortality between Aboriginal and non-Aboriginal births in Western Australia with the majority of this related to differences in maternal sociodemographic factors, antenatal smoking and gestational age. Public health programmes targeting these factors may contribute to a reduction in early life health differentials and benefit Aboriginal population health through the life course.

Parental Factors Associated With the Decision to Participate in a Neonatal Clinical Trial

IMPORTANCE

It remains poorly understood how parents decide whether to enroll a child in a neonatal clinical trial. This is particularly true for parents from racial or ethnic minority populations. Understanding factors associated with enrollment decisions may improve recruitment processes for families, increase enrollment rates, and decrease disparities in research participation.

OBJECTIVE

To assess differences in parental factors between parents who enrolled their infant and those who declined enrollment for a neonatal randomized clinical trial.

DESIGN, SETTING, AND PARTICIPANTS

This survey study conducted from July 2017 to October 2019 in 12 US level 3 and 4 neonatal intensive care units included parents of infants who enrolled in the High-dose Erythropoietin for Asphyxia and Encephalopathy (HEAL) trial or who were eligible but declined enrollment. Data were analyzed October 2019 through July 2020.

EXPOSURE

Parental choice of enrollment in neonatal clinical trial.

MAIN OUTCOMES AND MEASURES

Percentages and odds ratios (ORs) of parent participation as categorized by demographic characteristics, self-assessment of child's medical condition, study comprehension, and trust in medical researchers. Survey questions were based on the hypothesis that parents who enrolled their infant in HEAL differ from those who declined enrollment across 4 categories: (1) infant characteristics and parental demographic characteristics, (2) perception of infant's illness, (3) study comprehension, and (4) trust in clinicians and researchers.

RESULTS

Of a total 387 eligible parents, 269 (69.5%) completed the survey and were included in analysis. This included 183 of 242 (75.6%) of HEAL-enrolled and 86 of 145 (59.3%) of HEAL-declined parents. Parents who enrolled their infant had lower rates of Medicaid participation (74 [41.1%] vs 47 [55.3%]; P = .04) and higher rates of annual income greater than $55 000 (94 [52.8%] vs 30 [37.5%]; P = .03) compared with those who declined. Black parents had lower enrollment rates compared with White parents (OR, 0.35; 95% CI, 0.17-0.73). Parents who reported their infant's medical condition as more serious had higher enrollment rates (OR, 5.7; 95% CI, 2.0-16.3). Parents who enrolled their infant reported higher trust in medical researchers compared with parents who declined (mean [SD] difference, 5.3 [0.3-10.3]). There was no association between study comprehension and enrollment.

CONCLUSIONS AND RELEVANCE

In this study, the following factors were associated with neonatal clinical trial enrollment: demographic characteristics (ie, race/ethnicity, Medicaid status, and reported income), perception of illness, and trust in medical researchers. Future work to confirm these findings and explore the reasons behind them may lead to strategies for better engaging underrepresented groups in neonatal clinical research to reduce enrollment disparities.

Randomised trial of azithromycin to eradicate Ureaplasma in preterm infants

OBJECTIVE

To test whether azithromycin eradicates Ureaplasma from the respiratory tract in preterm infants.

DESIGN

Prospective, phase IIb randomised, double-blind, placebo-controlled trial.

SETTING

Seven level III-IV US, academic, neonatal intensive care units (NICUs).

PATIENTS

Infants 24⁰-28⁶ weeks' gestation (stratified 24⁰-26⁶; 27⁰-28⁶ weeks) randomly assigned within 4 days following birth from July 2013 to August 2016.

INTERVENTIONS

Intravenous azithromycin 20 mg/kg or an equal volume of D5W (placebo) every 24 hours for 3 days.

MAIN OUTCOME MEASURES

The primary efficacy outcome was Ureaplasma-free survival. Secondary outcomes were all-cause mortality, Ureaplasma clearance, physiological bronchopulmonary dysplasia (BPD) at 36 weeks' postmenstrual age, comorbidities of prematurity and duration of respiratory support.

RESULTS

One hundred and twenty-one randomised participants (azithromycin: n=60; placebo: n=61) were included in the intent-to-treat analysis (mean gestational age 26.2±1.4 weeks). Forty-four of 121 participants (36%) were Ureaplasma positive (azithromycin: n=19; placebo: n=25). Ureaplasma-free survival was 55/60 (92% (95% CI 82% to 97%)) for azithromycin compared with 37/61 (61% (95% CI 48% to 73%)) for placebo. Mortality was similar comparing the two treatment groups (5/60 (8%) vs 6/61 (10%)). Azithromycin effectively eradicated Ureaplasma in all azithromycin-assigned colonised infants, but 21/25 (84%) Ureaplasma-colonised participants receiving placebo were culture positive at one or more follow-up timepoints. Most of the neonatal mortality and morbidity was concentrated in 21 infants with lower respiratory tract Ureaplasma colonisation. In a subgroup analysis, physiological BPD-free survival was 5/10 (50%) (95% CI 19% to 81%) among azithromycin-assigned infants with lower respiratory tract Ureaplasma colonisation versus 2/11 (18%) (95% CI 2% to 52%) in placebo-treated infants.

CONCLUSION

A 3-day azithromycin regimen effectively eradicated respiratory tract Ureaplasma colonisation in this study.

TRIAL REGISTRATION NUMBER

NCT01778634.

Racial/ethnic disparities and human milk use in necrotizing enterocolitis

BACKGROUND

The impact of human milk use on racial/ethnic disparities in necrotizing enterocolitis (NEC) incidence is unknown.

METHODS

Trends in NEC incidence and human milk use at discharge were evaluated by race/ethnicity among 47,112 very low birth weight infants born in California from 2008 to 2017. We interrogated the association between race/ethnicity and NEC using multilevel regression analysis, and evaluated the effect of human milk use at discharge on the relationship between race/ethnicity and NEC using mediation analysis.

RESULTS

Annual NEC incidence declined across all racial/ethnic groups from an aggregate average of 4.8% in 2008 to 2.6% in 2017. Human milk use at discharge increased over the time period across all racial groups, and non-Hispanic (NH) black infants received the least human milk each year. In multivariable analyses, Hispanic ethnicity (odds ratio (OR) 1.27, 95% confidence interval (CI) 1.02-1.57) and Asian or Pacific Islander race (OR 1.35, 95% CI 1.01-1.80) were each associated with higher odds of NEC, while the association of NH black race with NEC was attenuated after adding human milk use at discharge to the model. Mediation analysis revealed that human milk use at discharge accounted for 22% of the total risk of NEC in non-white vs. white infants, and 44% in black vs. white infants.

CONCLUSIONS

Although NEC incidence has declined substantially over the past decade, a sizable racial/ethnic disparity persists. Quality improvement initiatives augmenting human milk use may further reduce the incidence of NEC in vulnerable populations.

Early neurobehavior at 30 weeks postmenstrual age is related to outcome at term equivalent age

AIMS

To determine 1) the relationship between infant medical factors and early neurobehavior, and 2) the relationship between early neurobehavior at 30 weeks postmenstrual age (PMA) and neurobehavior at term equivalent age.

STUDY DESIGN

In this prospective longitudinal study, 88 very preterm infants born ≤30 weeks estimated gestational age (EGA) had neurobehavioral assessments at 30 weeks PMA using the Premie-Neuro and at term equivalent age using the NICU Network Neurobehavioral Scale (NNNS) and Hammersmith Neonatal Neurological Evaluation (HNNE).

RESULTS

Lower Premie-Neuro scores at 30 weeks PMA were related to being more immature at birth (p = 0.01; β = 3.87); the presence of patent ductus arteriosus (PDA; p < 0.01; β = -16.50) and cerebral injury (p < 0.01; β = -20.46); and prolonged exposure to oxygen therapy (p < 0.01; β = -0.01), endotracheal intubation (p < 0.01; β = -0.23), and total parenteral nutrition (p < 0.01; β = -0.35). After controlling for EGA, PDA, and number of days of endotracheal intubation, lower Premie-Neuro scores at 30 weeks PMA were independently related to lower total HNNE scores at term (p < 0.01; β = 0.12) and worse outcome on the NNNS with poorer quality of movement (p < 0.01; β = 0.02) and more stress (p < 0.01; ß = -0.004), asymmetry (p = 0.01; β = -0.04), excitability (p < 0.01; β = -0.05) and suboptimal reflexes (p < 0.01; ß = -0.06).

CONCLUSION

Medical factors were associated with early neurobehavioral performance at 30 weeks PMA. Early neurobehavior at 30 weeks PMA was a good marker of adverse neurobehavior at NICU discharge.

Influence of Patient Characteristics on Antibiotic Use Rates Among Preterm Infants

BACKGROUND

The antibiotic use rate (AUR) has emerged as a potential metric for neonatal antibiotic use, but reported center-level AURs are limited by differences in case mix. The objective of this study was to identify patient characteristics associated with AUR among a large cohort of preterm infants.

METHODS

Retrospective observational study using the Optum Neonatal Database, including infants born from January 1, 2010 through November 30, 2016 with gestational age 23-34 weeks admitted to neonatal units across the United States. Exposures were patient-level characteristics including length of stay, gestational age, sex, race/ethnicity, bacterial sepsis, necrotizing enterocolitis, and survival status. The primary outcome was AUR, defined as days with ≥ 1 systemic antibiotic administered divided by length of stay. Descriptive statistics, univariable comparative analyses, and generalized linear models were utilized.

RESULTS

Of 17 910 eligible infants, 17 836 infants (99.6%) from 1090 centers were included. Median gestation was 32.9 (interquartile range [IQR], 30.3-34) weeks. Median length of stay was 25 (IQR, 15-46) days and varied by gestation. Overall median AUR was 0.13 (IQR, 0-0.26) and decreased over time. Gestational age, sex, and race/ethnicity were independently associated with AUR (P < .01). AUR and gestational age had an unexpected inverse parabolic relationship, which persisted when only surviving infants without bacterial sepsis or necrotizing enterocolitis were analyzed.

CONCLUSIONS

Neonatal AURs are influenced by patient-level characteristics besides infection and survival status, including gestational age, sex, and race/ethnicity. Neonatal antibiotic use metrics that account for patient-level characteristics as well as morbidity case mix may allow for more accurate comparisons and better inform neonatal antibiotic stewardship efforts.

Oxidative Stress Biomarker Decreased in Preterm Neonates Treated With Kangaroo Mother Care

OBJECTIVE

Due to physiological and metabolic immaturity, prematurely born infants are at increased risk because of maternal separation in many neonatal intensive care units (NICUs). The stress induced from maternal-infant separation can lead to well-documented short-term physiologic instability and potentially lifelong neurological, sociological, or psychological sequelae. Based on previous studies of kangaroo mother care (KMC) that demonstrated improvement in physiologic parameters, we examined the impact of KMC on physiologic measures of stress (abdominal temperature, heart rate, oxygen saturation, perfusion index, near-infrared spectrometry), oxidative stress, and energy utilization/conservation in preterm infants.

METHODS

In this randomized, stratified study of premature neonates, we compared the effects on urinary concentrations of biomarkers of energy utilization and oxidative stress of 1 hr of KMC versus incubator care on Day 3 of life in intervention-group babies (n = 26) and control-group babies (n = 25), respectively. On Day 4, both groups received 1 hr of KMC. Urinary samples were collected 3 hr before and 3 hr after intervention/incubator care on both days. Energy utilization was assessed by measures of adenosine triphosphate (ATP) degradation (i.e., hypoxanthine, xanthine, and uric acid). Oxidative stress was assessed using urinary allantoin. Mixed-models analysis was used to assess differences in purine/allantoin.

RESULTS

Mean allantoin levels over Days 3 and 4 were significantly lower in the KMC group than in the control group (p = .026).

CONCLUSIONS

Results provide preliminary evidence that KMC reduces neonatal oxidative stress processes and that urinary allantoin could serve as an effective noninvasive marker for future studies.