Infant Mortality Research Articles

The functional state of the respiratory system of the patients with proximal spinal muscular atrophy 5q (SMA 5q): from the natural history of the disease to the era of pathogenetic therapy. Problems and expectations

Proximal spinal muscular atrophy 5q is an autosomal recessive neuromuscular disease. This disorder is characterized by progressive symptoms of flaccid paralysis and muscular atrophy due to degeneration of α-motor neurons in the anterior horns of the spinal cord. The disease is caused by the lack of a fully functional SMN protein due to homozygous deletion of exon 7 in the SMN1 gene. For a long time, spinal muscular atrophy was the leading genetic cause of infant mortality. With the introduction of modern pathogenetic treatment methods that modify the disease, the duration and quality of life of patients increases, and a “blurring of boundaries” between types of spinal muscular atrophy and the formation of new phenotypes happens. In this regard, approaches to patient management, including approaches to the assessment and correction of respiratory disorders, are changing. The review of the available medical literature was conducted. The clinical studies on spinal muscular atrophy in the natural course of the disease and with the use of pathogenetic drugs were analyzed, as well as the data on the state of the respiratory system of the patients.

Prevalence, patterns and determinants of unmet needs of contraception among married women in Imphal East district of Manipur: a cross-sectional study

Background: In many countries, unmet need for family planning among pregnant women is a main reason of closely spaced births, child bearing at a very early age, unsafe abortions or physical abuse, all of which are considered as main co-factors to high maternal and infant mortality. Understanding the unmet need of contraception and contraceptive behaviour among married women will help in enhancing the service provision among them. The study was done with the objective to estimate the prevalence of unmet need of contraception and patterns of contraceptive usage among currently married women and to determine the association between unmet need of contraception and some selected variables. Methods: A cross-sectional study was conducted using pre-tested, semi-structured questionnaire among currently married women. Bivariate and multivariate logistic regression analyses were used to identify factors associated with the unmet need of contraception. A p value of <0.05 was taken as statistically significant. Results: Out of 300 respondents, more than half (165, 55.0%) had unmet needs of contraception. Age of the participant AOR=1.057 (1.013-1.103), self-employed AOR=0.433 (0.222-0.844), pregnant at present AOR = 7.693 (2.868-20.635), discussing about FP with husband AOR=0.534 (0.305-0.936) and those ever received FP services AOR=2.794 (1.579-4.944) were significantly associated with unmet need of contraception. Conclusions: Five out of ten women were found to have unmet need for contraception. Awareness programs regarding importance of family planning and various family planning services available at health facilities should be conducted from time to time among the public.

Risk Stratification Of Signs Of Possible Serious Bacterial Infection For Prediction Of Mortality Among Young Infants

Objective: Possible serious bacterial infection (PSBI) is one of the leading causes of infant mortality. Based on WHO multi-centric study, signs of PSBI are categorized into: signs of clinical severe infection (CSI) and signs of critical illness (CI). Assessment of signs of PSBI helps to divide infants into risk groups for appropriate management and prognostication. This study aimed to assess risk stratification of signs of PSBI among young infants (0- 59 days of age) by correlating signs of PSBI with mortality. Methods: In this hospital-based prospective cohort study, 220 young infants with signs of PSBI were recruited. Infants were categorized into two: those with signs of CSI and those with signs of CI. Correlation of each sign of PSBI was done with mortality. Time to death was assessed by using the Kaplan Meier survival analysis. Results: 220 infants were analyzed for outcomes. Signs of CSI including fever, fast breathing, poor feeding, and movement only on stimulation had a low fatality rate; however low body temperature and severe chest pain was associated with high mortality of 20% and 9%, respectively. CI signs – convulsion, no movement at all, and no feeding at all were associated with high death rates of 14%, 63.7%, and 47.4% respectively. The majority of deaths were occurred within 48 hours of presentation. Conclusions: Mortality was high in infants with low body temperature, chest pain, or any sign of CI. Risk stratification based on clinical signs could help prioritize infants in need for urgent intervention and thus decrease infant mortality.

Determinants for Low Birth Weight in Mothers Giving Birth during the Covid-19 Pandemic

Background: Low birth weight (LBW) remains a significant global health issue, leading to higher rates of infant and child morbidity and mortality. In 2022, Indonesia had a 12.58% rate, while in Kutai Kartanegara Regency, East Kalimantan, the rate was higher at 16.30%. The Covid-19 pandemic, which severely impacted East Kalimantan also influenced LBW rates. Objectives: Analyzed the determinants of LBW incidence during the Covid-19 pandemic in Kutai Kartanegara. Methods: This population of 1265 mothers delivered in four public health centers with the highest cases of BBLR. This study used a case control design for 240 mothers, including 120 mothers who gave birth to babies with low birth weight and 120 mothers who gave birth to babies with LBW. Data were obtained from e-cohort data according to specific inclusion and exclusion criteria. Data collection occurred from August until October 2022 through interviews with structured questionnaires and maternal child handbooks. Data analysis was performed with logistic regression. Results: Determinant factors LBW were maternal nutritional risk (upper arm circumference <23.5 cm) (OR=2.800, 95% CI=1.237-6.340), history of anemia (OR=3.156, 95% CI=1.716-5.804), history of Covid-19 (OR=4.357, 95% CI=2.355-8.063), living with a smoker (OR=2.505, 95% CI=1.716-2.804), and not having health insurance (OR=2.744, 95% CI=1.435-5.247). Conclusions: Internal factors such as age, under arm circumference, anemia, Covid-19, birth spacing, and parity and external factors (such as living with smokers, not having insurance) were interconnected in contributing to the risk of LBW, the pandemic further influenced these determinant factors.

Suitable survival models for analyzing infant and child mortality data

Suitable survival models for analyzing infant and child mortality data

Infant Mortality in Mother and Baby Homes in 20th Century Ireland

During the first half of the 20th century, infant mortality in the general population fell by more than 50% in higher income countries. Despite accounting for a disproportionately high share of deaths in these countries during this period, few quantitative studies have examined the experiences of infants who were born or raised in an institutional context. In this paper, we quantify mortality rates in Mother and Baby Homes in Ireland, institutions that were aimed primarily at unmarried mothers and their infants. Using information on over 40,000 infants born in the 6 largest of these insitutions in Ireland, we assess how this risk of mortality changed over the course of the 20th century relative to the general population, and assess variation in death rates by observed characteristics. The mortality penalty for these institutions was greatly elevated, reaching four times the national mortality rate in the 1930s and 1940s. By comparing the outcomes of infants from the Mother and Baby Homes with the rest of the population using large-scale quantitative data, this study documents the scale of the disadvantage faced by marginalised communities born outside public hospital systems, and highlights the potential role of nutrition-related causes in these disparities.

Vaccine decision-making among pregnant women: a protocol for a cross-sectional mixed-method study in Brazil, Ghana, Kenya and Pakistan.

Maternal immunization is a critical strategy to prevent both maternal and infant morbidity and mortality from several infectious diseases. When the first COVID-19 vaccines became available during the pandemic, there was mixed messaging and confusion amongst the broader public and among those associated with health care systems about the recommendations for COVID-19 vaccinations in pregnancy in many countries. A multi-country, mixed-methods study is being undertaken to describe how vaccine decision-making occurs amongst pregnant and postpartum women, with a focus on COVID-19 vaccines. The study is being conducted in Brazil, Ghana, Kenya, and Pakistan. In each country, participants are being recruited from either 2 or 3 maternity hospitals and/or clinics that represent a diverse population in terms of socio-economic and urban/rural status. Data collection includes cross-sectional surveys in pregnant women and semi-structured in-depth interviews with both pregnant and postpartum women. The instruments were designed to identify attitudinal, behavioral, and social correlates of vaccine uptake during and after pregnancy, including the decision-making process related to COVID-19 vaccines, and constructs such as risk perception, self-efficacy, vaccine intentions, and social norms. The aim is to recruit 400 participants for the survey and 50 for the interviews in each country. Qualitative data will be analyzed using a grounded theory approach. Quantitative data will be analyzed using descriptive statistics, latent variable analysis, and prediction modelling. Both the quantitative and qualitative data will be used to explore differences in attitudes and behaviors around maternal immunization across pregnancy trimesters and the postpartum period among and within countries. Each country has planned dissemination activities to share the study findings with relevant stakeholders in the communities from which the data is collected and to conduct country-specific secondary analyses.

Task sharing for increasing access to obstetric ultrasonography: a formative qualitative study of nurse-led scanning with telemedicine review in Kenya

Abstract The informal settlements of Nairobi have higher neonatal and infant mortality rates than the average for Nairobi. Universal access to important diagnostics like ultrasonography is poor and inequitable due to the high cost of devices and limited availability of skilled sonographers. Recent advances of mobile ultrasound probes connected to smartphones, with or without artificial intelligence support, have improved access to devices; but skills to perform and interpret scans continue to be limited. The SonoMobile intervention involved training nurse-midwives to conduct point-of-care obstetric ultrasound scans in antenatal care clinics in urban informal settlements. Scan data and images were shared, using telemedicine technology, with remote sonographers, who reviewed scan images and data, and provided reports. This study of 61 respondents from diverse stakeholder groups describes the acceptability, utility and considerations for sustainability of nurse-led, point-of-care obstetric ultrasonography with telemedicine review. Perceived value of nurse-led obstetric ultrasonography include improving access and affordability of obstetric ultrasonography services, timely identification and referral of high-risk pregnancies, and improving awareness of appropriate antenatal care among underserved populations. The relative affordability of SonoMobile was described as a critical enabler for a business model targeting low- and middle-income segments of the population, and for increasing quality and equity of antenatal care coverage. Areas highlighted for improvement include strengthening supervision of nurse trainees, broadening the scope of nurse training, and development of clear regulatory guidelines for nurse-led obstetric ultrasonography. The study highlights the complex task shifting required to provide universal access to a life-saving technology in an LMIC health system.

Long-lasting insecticidal nets use and the prevalence of Plasmodium falciparum infection among pregnant women attending antenatal care at the Bonassama District Hospital, Littoral Region of Cameroon: a cross-sectional study

BackgroundMalaria during pregnancy continues to be a significant cause of morbidity and mortality for both infants and mothers, particularly in sub-Saharan African (SSA) countries, despite increased efforts to control it. The utilization of long-lasting insecticide-treated nets (LLINs) during pregnancy is a well-established strategy to reduce the prevalence of malaria. Nonetheless, inadequate adherence remains a persistent challenge in certain regions with high malaria endemicity. This research aimed to assess the effectiveness of long-lasting insecticidal nets in preventing asymptomatic malaria infections among pregnant women attending antenatal care at the Bonassama District Hospital in the Littoral Region of Cameroon.MethodsA hospital-based cross-sectional study was conducted from March to June 2022. Data on sociodemographic characteristics and LLIN usage were collected through a structured questionnaire, while asymptomatic malaria infections were identified using a PfHRP2/pLDH malaria qualitative rapid diagnostic kit. The relationship between categorical variables was analyzed using the chi-square test and logistic regression at a significance level of 5%.ResultsOut of the 411 pregnant women included in the study, 35.4% were diagnosed with malaria. The LLIN utilization rate was 65.1%. The risk of malaria infection was 2.7 times higher (AOR = 2.75, 95% CI = 1.83–4.14, p < 0.001) among women who did not consistently use LLINs compared to those who did. Pregnant women in their first trimester (AOR = 3.40, 95% CI = 1.24–4.64, p = 0.010) and second trimester (AOR = 1.90, 95%CI = 0.99–3.62, p = 0.055) were more likely to sleep under net when compared to those in the third trimester. Younger women 20–29 years (71.4%), those in the first trimester (69.6%) and those who had the nets before pregnancy (68.9%) were amongst those who frequently used use the nets. Among the reasons reported for not frequently using LLINs were heat (55.2%), suffocation (13.6%) and the smell of nets (8.4%).ConclusionThe use of LLIN was moderately high among the participants in this study, though still below national target. Age group, religion and gestation period were the major factors determining the use of LLINs. Considering the proven effectiveness of LLINs in reducing malaria morbidity and mortality, it is imperative for the National Malaria Control Programme (NMCP) to remain focused in promoting both LLIN ownership and utilization to achieve the national target of 100% and 80%, respectively.

The Relationship Between Maternal Malnutrition And The Risk Of Premature Birth

Preterm birth is a serious global health problem, given the high morbidity and mortality rates in infants born before 37 weeks gestation. Preterm infants are at high risk of various health complications, including respiratory distress and developmental delays. One of the main risk factors affecting preterm birth is maternal malnutrition. Malnutrition during pregnancy can impair fetal development and the function of the placenta, which plays an important role in providing the fetus with the nutrients and oxygen it needs. Deficiencies in essential nutrients, such as protein, iron, calcium and folic acid, increase the risk of preterm birth. In addition, low socioeconomic conditions, limited access to nutritious food, and lack of nutrition knowledge also contribute to malnutrition in pregnant women. This study used a literature review method to examine the relationship between malnutrition in pregnant women and the risk of preterm birth. Reviewing relevant scientific sources, this study aims to deepen the understanding of the impact of malnutrition on pregnancy and provide recommendations for effective nutrition interventions to reduce the risk of preterm birth and improve maternal and infant health.

A multicenter epidemiological survey of iNO use in preterm infants in China.

To investigate the use of inhaled nitric oxide (iNO) in hospitalized preterm infants in China over 10 years and its clinical outcomes. A total of 616 premature infants who were administered iNO in the Neonatology Departments of 5 Class A tertiary hospitals in China for ten years from January 2013 to December 2022 were included retrospectively. Based on their enrollment periods, the patients were divided into two groups: Group 1 from January 2013 to December 2017 and Group 2 from January 2018 to December 2022, respectively. The perinatal characteristics, short-term clinical outcomes, and mortality rates were compared between these two groups. The utilization of iNO in preterm infants grew annually over the past10 years; the utilization of iNO in Group 2 infants increased approximately one-fold when compared with Group 1 (1.52% vs. 0.80%, p < .001), and the increase was greater in gestational age (GA) < 34 weeks compared with 34-36 weeks preterm infants. Moreover, the iNO usage in Group 1 infants with GA < 34 weeks increased from 1.14% to 2.46% and 0.60% to 0.99% in 34-36 weeks preterm infants (p < .001) in Group 2, respectively. Apart from a smaller GA (32.9 w vs. 33.5 w, p < .001) and birth weight (BW, 1900 g vs. 2141 g, p < .001), the initial [14 parts per million (ppm) versus 10 ppm, p < .001] and maximum (15 ppm vs. 10 ppm, p < .001) doses of Group 2 were larger; however, their recent clinical outcomes did not improve with increasing iNO utilization (p > .05)as compared to Group 1, respectively. Although the overall iNO preterm mortality rates over the past 10 years were 25.8%, the mortality rates for preterm infants at 34-36 weeks were significantly lower than for preterm infants at GA < 34 weeks (15.4% vs. 33.8%, p < .001). Nonetheless, no improvement in mortality was observed in Group 2 preterm infants with GA < 34 weeks for the past 5 years when compared with Group 1 (32.9% vs. 35.8%, p > .05) infants, and significantly lower mortality rates were noticed in preterm infants with 34-36 weeks (11.2% vs. 22.7%, p < .001). Patients with hypoxic respiratory failure (HRF) or persistent pulmonary hypertension of the newborn (PPHN) iNO preterm infants did not show lower mortality rates with the increase of iNO use rate (p > .05). The overall mortality rates of preterm PPHN infants with iNO were lower than that of HRF (20.2% vs. 36.5%, p < .001), while the mortality rates of Group 2 preterm PPHN infants with iNO significantly lower than that of HRF (17.7% vs 36.0%, p < .001). The iNO has been extensively used in Chinese preterm infants over the past 10 years, this increase was more significant in preterm infants with GA < 34 weeks. Moreover, preterm infants using iNO have lower GA and BW, larger initial and maximum doses, and more aggressive strategies in the last past 5 years. Although iNO use in preterm infants with GA of 34-36 weeks has significantly reduced mortality, mortality rates and short-term clinical outcomes of iNO in preterm infants <34 weeks of GA has no obvious improvement. Further studies are required to investigate the efficacy and safety of iNO in preterm infants <34 weeks of GA.

Perinatal mental health and active-duty military spouses: a scoping review

IntroductionMental health conditions (i.e. depression or anxiety) are the most common complication of pregnancy and childbirth in the United States (U.S.) and are associated with increased maternal and infant morbidity and mortality. Research has demonstrated a relationship between stress and mental health diagnoses in pregnancy; therefore, it is concerning that military families face unique challenges which contribute to additional stressors among spouses of active-duty (AD) military personnel during the perinatal period. The objective of this scoping review was to understand the current state of research on perinatal stress or perinatal mental health among American spouses of AD military personnel.MethodsThe Boolean phrase was created in consultation with 2 health science librarians and the following databases searched in October 2023: PubMed, Embase, Military and Government Collection, CINAHL, and PsychINFO. 2 reviewers identified 481 studies for screening once duplicates were removed. After applying inclusion and exclusion criteria, 21 studies remained for data extraction and analysis.ResultsMost of the studies were quantitative, took place in the southern U.S., and the most represented military branch was Air Force. Most of the studies included both AD military members and AD spouses; 28% focused solely on AD spouses. Samples were not racially diverse, and findings identified racial disparities in perinatal mental health conditions. There was a wide variety in outcome measures, including the following general categories: (1) stress, anxiety, and/or depression, (2) maternal-infant attachment, (3) group prenatal care, and (4) deployment focus. Our review identified the following concepts: spouses most at risk for perinatal mental health conditions, the need for perinatal mental health screening, and the need for social support.ConclusionsFindings from the identified studies indicate a need for additional research in this area. Additionally, findings highlight circumstances unique to this population that result in an increased risk of stress and/or mental health conditions during the perinatal period. Such challenges demand improved mental health screening and additional resources for this population. Meeting the needs of this unique population also requires significant funding and policy change to allow for increased access to mental health resources and to ensure the health of the birthing person and infant.

Contextualizing family planning messages for the BornFyne-PNMS digital platform in Cameroon: a community-based approach

BackgroundFamily planning (FP) is crucial for reducing maternal and infant mortality and morbidity, particularly through the prevention of unsafe abortions resulting from unwanted pregnancies. Despite Cameroon’s commitment to increasing the adoption of modern FP strategies, rural and poor populations still exhibit low demand due to limited access to healthcare services. This study documents the approach in developing family planning messages for the BornFyne prenatal management system as a platform to improve family planning awareness and enhance uptake.MethodThis is a mixed-methods study that employed the Health Belief Model (HBM). The study included a cross-sectional survey and focus group discussions in four districts of Cameroon. The survey explored household perspectives of FP and the use of mobile phone. Focus group discussions involved women, men, and community health workers to gain in-depth insights. Thematic analysis using themes from the HBM guided the analysis, focusing on perceived benefits, barriers, and cues to action.ResultsThe survey included 3,288 responses. Thematic analysis of focus group discussions highlighted knowledge gaps and areas requiring additional information. Identified gaps informed the development of targeted FP messages aligned with BornFyne objectives and the Health Belief Model. Results revealed that most respondents recognized the benefits of FP but faced knowledge barriers related to side effects, cultural influences, and communication challenges between partners. Focus group discussions further highlighted the need for education targeting both men and women, dispelling misconceptions, and addressing adolescent and youths’ ignorance. The study emphasized the importance of tailored messaging for specific demographic groups and culture.ConclusionDeveloping effective FP intervention messages requires a nuanced understanding of community perspectives. The BornFyne-PNMS family planning feature, informed by the Health Belief Model, addresses knowledge gaps by delivering educational messages in local dialects via mobile phones. The study’s findings underscore the importance of community-based approaches to contextualizing and developing FP content targeting specific populations to generate tailored messages to promote awareness, acceptance, and informed decision-making. The contextualized and validated messages are uploaded into the BornFyne-family planning feature.

The impact of sociodemographic, health status and resources, macroeconomic, and environmental factors on infant mortality rates in Qatar, Kingdom of Saudi Arabia, and the United Arab Emirates.

This study aims to study the impact of sociodemographic (SD), health status and resources (HSR), macroeconomic (ME), and Environmental (EV) factors on the infant mortality rate (IMR) in Qatar, Kingdom of Saudi Arabia (KSA), and the United Arab Emirates (UAE) and from 1990 to 2022. A retrospective time-series study employing yearly data was conducted. A generalized least squares model was utilized to construct an exploratory model of IMR determinants for each country. In SD, the risk of IMR may be increased with a higher crude birth rate, adolescent fertility rate, and married women percentage. In HSR, immunization coverage shows a significant effect in preventing neonatal diseases and reducing IMR. In ME, the effect of parents' employment seems contradicted among the three countries. In EV, greenhouse emissions have also had contradictory effects among the three countries, suggesting a complex relationship with IMR. Some were consistent with global findings, whereas others contradicted the prevailing narrative. This study highlights the need for tailored public health interventions addressing socio-demographic, healthcare, and environmental contexts to effectively reduce IMR and enhance infant health outcomes.

Epidemiological trends of febrile infants presenting to the Paediatric Emergency department, in a tertiary care hospital, Karachi, Pakistan: a retrospective review

BackgroundUnderstanding the epidemiological patterns of febrile infants can offer valuable insights for optimising management strategies and developing quality improvement initiatives, aiming to improve healthcare delivery in high-volume, low-resource emergency departments...

Clinical profiles, incidence and predictors of early neonatal mortality at Mbarara Regional Referral Hospital, south-western Uganda

BackgroundThe current neonatal mortality rate in Uganda is high at 22 deaths per 1000 live births, while it had been stagnant at 27 deaths per 1000 live births in the past decade. This is still more than double the World Health Organization target of < 12 deaths per 1,000 live births. Three-quarters of new born deaths occur within the first week of life, which is a very vulnerable period and the causes reflect the quality of obstetric and neonatal care. At Mbarara Regional Referral Hospital (MRRH), the modifiable contributors and predictors of mortality remain undocumented, yet neonates make the bulk of admissions and contribute significantly to the overall infant mortality rate. We therefore examined the clinical profiles, incidence and predictors of early neonatal mortality of neonates admitted at MRRH in south-western Uganda.MethodsWe conducted a prospective cohort study at the Neonatal Unit of MRRH between August – November, 2022 among neonates. We consecutively included all live neonates aged < 7 days admitted to neonatal unit and excluded those whose outcomes could not be ascertained at day 7 of life. We obtained baseline data including; maternal social-demographic and obstetric information, and performed neonatal physical examinations for clinical profiles. We followed up neonates at 24 and 72 h of life, and at 7 days of life for mortality. We summarized the clinical profiles and incidence of mortality as frequencies and percentages and performed modified Poisson regression analysis to identify the predictors of early neonatal mortality.ResultsWe enrolled 384 neonates. The majority of neonates were in-born (68.5%, n = 263) and were admitted within 24 h after birth (54.7%, n = 210). The most common clinical profiles at admission were prematurity (46%, n = 178), low birth weight (LBW) (44%, n = 170), sepsis (36%, n = 139), hypothermia (35%, n = 133), and birth asphyxia (32%, n = 124). The incidence of early neonatal mortality was at 12.0%, 46 out of the 384 neonates died. The predictors of early neonatal mortality were hypothermia, [adjusted Risk Ratio: 4.10; 95% C.I (1.15–14.56)], birth asphyxia, [adjusted Risk Ratio: 3.6; 95% C.I (1.23–10.73)] and delayed initiation of breastfeeding, [adjusted Risk Ratio: 7.20; 95% C.I (1.01–51.30)].ConclusionPrematurity, LBW, sepsis, birth asphyxia and hypothermia are the commonest admission diagnoses. The incidence of early neonatal mortality was high, 12.0%. We recommend targeted interventions by the clinical care team at MRRH to enable timely identification of neonates with or at risk of hypothermia to reduce incidence of adverse outcomes. Intrapartum care should be improved in order to mitigate the risk of birth asphyxia. Breastfeeding within the first hour of birth should be strengthened were possible, as this is associated with vast benefits for the baby and may reduce the incidence of complications like hypothermia.

Methodologic considerations in estimating racial disparity of mortality among very preterm infants.

This review explores methodological considerations in estimating racial disparities in mortality among very preterm infants (VPIs). Significant methodological variations are evident across studies, potentially affecting the estimated mortality rates of VPIs across racial groups and influencing the perceived direction and magnitude of racial disparities. Key methodological approaches include the birth-based approach versus the fetuses-at-risk approach, with each offering distinct insights depending on the specific research questions posed. Cohort selection and the decision for crude versus adjusted comparison are also critical elements that shape the outcomes and interpretations of these studies. This review underscores the importance of careful methodological planning and highlights that no single approach is definitively superior; rather, each has its strengths and limitations depending on the research objectives. The findings suggest that adjusting the methodological approach to align with specific research questions and contexts is essential for accurately assessing and addressing racial disparities in neonatal mortality. IMPACT: Elucidates the impact of methodological choices on perceived racial disparities in neonatal mortality. Offers a comprehensive comparison of birth-based vs. fetuses-at-risk approaches in the context of racial disparity research. Provides guidance on the cohort selection and adjustment criteria critical for interpreting studies on racial disparities in very preterm infant mortality.

Beyond the biological prime: Deciphering the link between child survival and maternal age in India

This paper investigates the impact of maternal age at birth on child mortality in India, the world's most populous country burdened with significant neonatal and infant mortality. Utilizing data from the latest National Family Health Surveys, covering around 1 million children, our analysis incorporates models with household and biological-mother fixed-effects to address unobserved heterogeneity. Outcomes include neonatal mortality (<28 days), infant mortality (<12 months), and under-5 mortality. Findings reveal a U-shaped relationship between maternal age and child mortality, with the highest risk for mothers below 17 and above 40 years old. Robustness checks confirm the enduring significance of maternal age even after adjusting for socioeconomic factors and time-variant unobservables. Moreover, models with biological-mother fixed-effects suggest higher risks compared to models that only control for observables, indicating that regressions without controls for time-invariant heterogeneity may underestimate the risks of maternal age at birth.

Physicians and the Production of Health: Returns to Health Care during the Mortality Transition

Abstract This paper investigates the returns to health care provision during the mortality transition. We construct a new panel data set covering German municipalities from 1928 to 1936. The endogeneity of health care supply is addressed by using the expulsion of Jewish physicians from statutory health insurance as exogenous variation in regional physician supply. Increases in the supply of physicians reduce infant mortality and mortality from common childhood diseases. Using a semiparametric control function approach, we find diminishing marginal returns to health care provision. The results are consistent with historical trends in infant mortality over the 20th century.

Managing the Historic Burden of Kernicterus Mortality in India.

Prevention of neonatal bilirubin injury exemplifies success of systems approach to avert adverse neonatal and childhood outcomes that rely on strategies including prenatal identification of Rhesus sensitization, universal maternal blood typing, risk assessment for neonatal extreme hyperbilirubinemia (EHB), unfettered access to safe, effective phototherapy, and application of patient safety principles. India's diverse landscape suggests varied real-time experiences of neonatal hyperbilirubinemia and consequent infant mortality rates (IMR). Utilizing Global Burden of Disease (GBD) database, the authors examined national and subnational trends, infant mortality timing, and the disease burden from hemolytic and perinatal jaundice over 30 y (1999 to 2019). They also assessed the correlation of EHB-IMR with socio-demographic index and health expenditure per capita, estimating economic losses from EHB-related infant mortality to guide policy decisions at national and state domains. From 1990 to 2019, India delivered 811,078,415 livebirths of which, 1,189,856 infant deaths were due to EHB. EHB-related deaths decreased from 57,773 in 1990 to 19,664 in 2019, a 60% reduction vs. 40% in overall IMR. Early (0-6 d), late (7-27 d), and post-neonatal (28-364 d) deaths accounted for 61%, 34%, and 5% of mortality, respectively. Uttar Pradesh and Bihar contributed to 38% of all EHB deaths. Economic analysis estimate losses between US $7.2 and 11.7 billion for the year 2019 secondary to EHB-related mortality. The present analysis reveals consistent declines across all states to reach current EHB-IMR of 0.8 per 1,000 live-births in India by 2019. Significant economic impact of lost human productivity highlight ongoing need for targeted life-saving public health strategies.