Black Population Research Articles

Black identity and internal health attributions of second generation black immigrant women

ABSTRACT Objective Despite second generation Black immigrants being a rapidly growing population, they are often overlooked in health attribution research that treats Black populations as a monolithic group. Very few studies focus on how discrimination, societal pressure, and racial identity play a role in the health attributions of Black immigrant women. Even fewer studies have examined this relationship solely with second generation Black immigrant women. Research has shown, however, that increased racial and ethnic identity but decreased experiences with racism are related to higher internal health attributions in Black populations. Thus, we addressed this dearth in research in the current study by examining the relationship between racial centrality, racism stress, and internal health attributions in a sample of 123 second generation Black immigrant women. Design Health attributions were assessed using the Illness Attribution Scale, racism stress using the Schedule of Racist Events, and racial centrality using the Multidimensional Inventory of Black Identity. Multiple regression analyses were conducted to test the hypotheses that lower levels of racism stress, but higher ratings of racial centrality would relate to higher scores of internal health attributions. Results A positive relationship was found between racial centrality and internal health attributions but not racism stress. Conclusion The results indicated that stronger affirmations with Black identity are associated with a greater importance of the causes of illness to be within one’s perceived control for second generation Black immigrant women, which highlights the importance of examining wthin-group differences via collective identity measures to better explain health attribution behavioirs.

Prediction of cardiovascular events and all-cause mortality using race and race-free estimated glomerular filtration rate in African Americans: the Jackson Heart Study.

New Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations without a race adjustment were developed to estimate the glomerular filtration rate (eGFR). We aimed to compare the performance of five CKD-EPI eGFR equations, with or without race, in predicting cardiovascular disease (CVD) events and all-cause mortality in Black Americans from the Jackson Heart Study. JHS is an ongoing population-based prospective cohort study of African Americans in the Jackson, Mississippi, metropolitan area. Five CKD-EPI equations were used to estimate GFR at baseline using serum creatinine (Cr) or cystatin C (cys), including 2009 eGFRcr(ASR [age, sex, race]), 2021 eGFRcr(AS [age and sex]), 2012 eGFRcr-cys(ASR), 2021 eGFRcr-cys(AS), 2012 eGFRcys(AS). Endpoints were incident CVD events and all-cause mortality. Cox proportional hazards regression was used to assess the associations between different eGFRs and outcomes adjusting for atherosclerotic risk factors. Harrell's C-statistics and Net Reclassification Index (NRI) were used to assess the predictive utility. Among 5,129 participants (average age 54.8 ± 12.8 yrs), 1898 were male (37.0%). eGFRcr(AS) provided lower estimates and resulting in a greater proportion of participants categorized as CKD than eGFRcr(ASR), eGFRcr-cys(ASR), eGFRcr-cys(AS) and eGFRcys(AS). A median follow-up of 13.7 and 14.3 years revealed 411 (9.3%) CVD incidents and 1,207 (23.5%) deaths. Lower eGFRs were associated with CVD incidents and all-cause mortality. eGFRcr-cys(ASR), eGFRcr-cys(AS) and eGFRcys(AS) were strongly associated with incident CVD events and all-cause mortality than eGFRcr(ASR) and eGFRcr(AS). A significant discrimination improvement was found in C-statistics for predicting incident CVD events and all-cause mortality after adding each eGFR measure to the basic model including atherosclerotic risk factors. Across a 7.5% 10-year risk threshold, eGFRcys(AS) improved net classification of all-cause mortality (NRI: 2.19, 95%CI: 0.08, 4.65%). eGFR based on creatinine omit race has the lowest mean and detects more CKD patients in Black population. The eGFRs incorporating cystatin C strengthens the association between the eGFR and the risks of incident CVD and all-cause mortality. Cystatin C-based eGFR equations might be more appropriate for predicting CVD and mortality among Black population.

Mapping Rosenwald Schools for African Americans in South Carolina: A Geographic Analysis of Spatial Patterns

In early twentieth-century America, many Blacks in the south had poor access to schooling. Philanthropist Julius Rosenwald and educator Booker T. Washington collaborated to help build schools in the south for Blacks in the 1920s and 1930s. This paper analyzes the geographic patterns of the schools that were built using funds donated by Rosenwald in the state of South Carolina. Some 446 of the 500 Rosenwald schools were located and mapped using a multi-step process, and then data related to these schools were analyzed in four state subregions. Rosenwald schools were built around the state, with relatively more schools built in the northern part of the state compared with the south, where a larger Black population in the south potentially points to less access to schools for Blacks at that time. Rosenwald funds required contributions from other sources, and the state, Blacks, and Whites all contributed. Interestingly, in the south, where there was a higher percentage of Blacks, Whites contributed a larger share towards the building of these schools in comparison with other state regions. The paper thus shows both the process and value of mapping these Rosenwald schools and analyzing this important historical time in South Carolina within a spatial construct.

O Bixiga em disputa: ambiente, cultura, memória e interesses imobiliários

Bixiga is currently experiencing a critical situation that threatens the preservation of what constitutes its most unmistakable cultural and environmental heritage, associated with the strong impact caused by the advance of real estate interests, announced by new buildings recently approved by Conpresp in its territory. Particular concern is the vulnerability to which the area known as Grota do Bixiga is being exposed, despite the existence of protective legislation agreed since the early 2000s. Concern is intensified by the fact that these developments create reckless precedents for others to be approved in the near future, thus putting an end to the possibility of preserving what remains of Grota do Bixiga. This approach allows us to look at a whole process of study, inventorying and consolidation of knowledge produced within the Historical Heritage Department, which began in the 1980s, linking architectural assets to the structuring elements of the urban fabric and to the social relationships that not only populate the memory of the place, but are kept alive in the cultural practices of the present. It also allows us to deal with the impasses between cultural heritage preservation policies and urban policies of a broader nature. It also allows us to deal with the impasses between cultural heritage preservation policies and broader urban policies. Finally, it allows us to analyze another layer of latent memory, unveiled by the discoveries linked to the excavations carried out for the construction of the Orange Line Subway Station. The recent archaeological finds have sparked an important debate about the origin of occupation of the neighborhood associated with the presence of the Quilombo Saracura, strengthening the memory of the black population, due to its representativeness and its persistence over time, as an essential element of the culture of the place, which cannot be erased or made invisible.

Race/Ethnicity, Education, and All-Cause Mortality in US Adults: Mediation by Telomere Length

Abstract Background Racial/ethnic inequities in mortality risk are pervasive in the United States even after controlling for socioeconomic status indicators such as educational attainment. Although the mechanisms underlying these inequities remain unclear, telomere length (TL) has emerged as a potential mediator. We aimed to investigate the joint association of race/ethnicity and education with all-cause mortality risk, and the contribution of TL to this relationship. Methods We used data from the U.S. National Health and Nutrition Examination Survey, 1999 to 2002, and 2019 Linked Mortality File (n = 6,526 non-institutionalized adults aged 25 years or older, including 2,166 deaths), a retrospective cohort study with a follow-up period to December 31, 2019. Cox proportional hazards regression and causal mediation analysis were used to address these aims. We reported hazard ratios (HR) and 95 % confidence intervals (CI). Furthermore, for the mediation analysis, we reported the total, direct, and indirect effects measured as HR and 95 % CI. Results After adjusting for age and sex, among White individuals, those with less than a high school education had a 2.26 times higher (95% CI: 1.93, 2.65) rate of all-cause mortality compared to those with some college or higher education. When compared with White adults with at least a college degree, Black adults with at least a college degree had a 1.38 higher rate of dying (95% CI: 1.04, 1.84). There was no significant joint association of race/ethnicity and education on all-cause mortality in Mexican Americans. In the mediation analysis, TL did not significantly contribute to the joint association of race/ethnicity and education with all-cause mortality risk. Discussion These findings underscore the need for a better understanding of the joint relationship of race/ethnicity and education on mortality risk inequities and their potential mechanisms to improve population health ultimately. Key messages • Lower educational attainment was associated with higher mortality rates among White individuals, disparities persisted among the Black population, despite higher education levels. • Our analysis did not find a significant mediation effect of telomere length on the joint effect of race/ethnicity and education-mortality relationship.

Impact of park renovation on children’s quality of life in New York City

Abstract Background Despite increasing interest in the role of parks on children’s health, research on the impact of park interventions is limited. This study uses a quasi-experimental pre-post design with matched controls to evaluate the effects of park redesign and renovation on children’s quality of life (QoL) in underserved New York City (NYC) neighborhoods with predominantly Hispanic and Black populations. Methods Utilizing longitudinal data from the Physical Activity and Redesigned Community Spaces (PARCS) Study, we examined the parent-reported QoL of children aged 3-11 years living within a 0.3-mile radius of 13 renovated parks (N = 201) compared to 11 (N = 197) control parks before and after the park intervention. QoL was measured using the modified KINDL questionnaire, a health-related QoL scale that assessed children’s physical and emotional well-being, self-esteem, and well-being in home, peer, and school settings. A difference in difference (DID) linear mixed model was used to compare QoL between intervention and control groups. Results We found a significant improvement in the physical well-being subscale of KINDL in the intervention vs. control group (DID=6.35, 95% CI = 0.85-11.85, p = 0.024). The differential improvement was strongest among girls (DID=7.88, p = 0.023) and children with parents in the lowest socioeconomic background (education high school or less DID=8.38, p = 0.024; Not employed DID=7.53, p = 0.048; Single/Widowed/Divorced DID=8.67, p = 0.025). No significant differences were found in other subscales. Conclusions Our study indicated a beneficial impact of improving park quality on the physical well-being of children residing in underserved neighborhoods. These findings support investments in neighborhood parks to advance health equity.

Regional Factors Affecting Smallmouth Bass and Largemouth Bass Recruitment in Midwestern USA Reservoirs

ABSTRACTRegional factors correlated with recruitment of black bass (largemouth bass; Micropterus nigricans and smallmouth bass; Micropterus dolomieu), two important fishes, are rarely studied, despite the importance of recruitment variation in influencing fish populations. We sought to identify factors that drove variation in age‐0 and age‐1 black bass abundance. Age‐0 or age‐1 black bass catch per unit effort (CPUE) in reservoirs in Kansas and Illinois, USA, was positively correlated with local short‐term (i.e., mean April precipitation) environmental variables. In contrast, age‐0 or age‐1 black bass CPUE was generally negatively correlated with long‐term environmental variables and river regulation metrics (i.e., reservoir elevation) in the Mississippi and Missouri river reservoirs. Our findings highlight that consideration of spatiotemporal scale is important when managing black bass populations.

APOL1 Bi- and Monoallelic Variants and Chronic Kidney Disease in West Africans.

Apolipoprotein L1 gene (APOL1) variants are risk factors for chronic kidney disease (CKD) among Black Americans. Data are sparse on the genetic epidemiology of CKD and the clinical association of APOL1 variants with CKD in West Africans, a major group in the Black population. We conducted a case-control study involving participants from Ghana and Nigeria who had CKD stages 2 through 5, biopsy-proven glomerular disease, or no kidney disease. We analyzed the association of CKD with APOL1 variants among participants with high-risk genotypes (two APOL1 risk alleles) and those with low-risk genotypes (fewer than two APOL1 risk alleles) by fitting logistic-regression models that controlled for covariates, including clinical site, age, and sex. Among 8355 participants (4712 with CKD stages 2 through 5, 866 with glomerular diseases, and 2777 with no kidney disease), the prevalence of monoallelic APOL1 variants was 43.0% and that of biallelic APOL1 variants was 29.7%. Participants with two APOL1 risk alleles had higher odds of having CKD than those with one risk allele or no risk alleles (adjusted odds ratio, 1.25; 95% confidence interval [CI], 1.11 to 1.40), as well as higher odds of focal segmental glomerulosclerosis (adjusted odds ratio, 1.84; 95% CI, 1.30 to 2.61). Participants with one APOL1 risk allele had higher odds of having CKD than those with no risk alleles (adjusted odds ratio, 1.18; 95% CI, 1.04 to 1.33), as well as higher odds of focal segmental glomerulosclerosis (adjusted odds ratio, 1.61; 95% CI, 1.04 to 2.48). The inclusion of covariates did not modify the association of monoallelic and biallelic APOL1 variants with CKD or focal segmental glomerulosclerosis. In this study, monoallelic APOL1 variants were associated with 18% higher odds of CKD and 61% higher odds of focal segmental glomerulosclerosis; biallelic APOL1 variants were associated with 25% higher odds of CKD and 84% higher odds of focal segmental glomerulosclerosis. (Funded by the National Human Genome Research Institute and others.).

Peripartum Cardiomyopathy and Social Vulnerability: An Epidemiological Analysis of Mortality Outcomes.

Peripartum cardiomyopathy (PPCM) outcomes have been previously linked to demographic and social factors. The social vulnerability index (SVI) is a measure of social vulnerability in the United States. We explored PPCM disparities and the impact of SVI on PPCM mortality. Mortality from 1999 to 2020, SVI, and demographic data were obtained from CDC databases. County-specific SVI rankings were linked to PPCM age-adjusted mortality rates (AAMRs), allowing for a comparative analysis of AAMRs across both cumulative populations and subpopulations to identify disparities. All US counties were then stratified into low- and high-SVI groups, facilitating comparison of SVI rankings by estimation of excess-deaths per 1 000 000 person-years attributable to greater social vulnerability and rate ratios (RR) through univariable Poisson regression. We identified a total of 1026 deaths related to PPCM between 1999 and 2020. Overall AAMR increased from 0.180 in 1999 to 0.326 in 2020. Black populations (AAMR: 1.081) and Southern US counties (AAMR: 0.444) had the highest AAMRs compared with other racial and US census groups, respectively. Higher SVI accounted for 0.172 excess deaths per 1 000 000 person-years (RR=1.800). Among Black and White populations, higher SVI also accounted for 0.248 and 0.071 excess deaths per 1 000 000 person-years, respectively. Similar impacts of greater social vulnerability were observed when comparing the US census regions (Northeast RR=1.609, Midwest RR=1.819, South RR=1.934, West RR=1.776). PPCM mortality disparities exist across racial and geographic populations in the United States. A greater burden of social vulnerability is associated with higher PPCM mortality on a national level.

Large-scale analysis reveals racial disparities in the prevalence of ADHD and conduct disorders

The primary purpose of this study is to highlight trends in the prevalence of attention deficit/hyperactivity disorders (ADHD) and conduct disorders (CD) between non-Hispanic White and non-Hispanic Black populations and identify potential diagnostic disparities between these groups. De-identified electronic health record data on the TriNetX platform of patients diagnosed with ADHD, CD, or both between January 2013 and May 2023 from 50 healthcare organizations in the US were used to investigate racial and sex disparities in the prevalence of ADHD and CD diagnoses. With a cohort of 849,281 ADHD patients and 157,597 CD patients, non-Hispanic White individuals were ~ 26% more likely to receive ADHD diagnosis and ~ 61% less likely to be diagnosed with CD than non-Hispanic Black individuals. The mean age of diagnosis of ADHD was over 8 years older for White patients than for Black patients, with a disproportionately higher number of White patients diagnosed in adulthood, compared to a comparatively negligible number of Black patients diagnosed with ADHD in the same age group. Additionally, Black females were the cohort least likely to be diagnosed with ADHD, while White females were the cohort least likely to be diagnosed with CD. Race disparities exist between Black and White populations, and sex disparities exist within each population. More information is needed to determine contributors to these differences, although implicit biases and systemic racism may be key contributing factors. Presenting evidence and increasing awareness of culturally relevant diagnoses can reduce unconscious bias and move toward more informed and objective psychiatric evaluations.

Equity-centered adaptive sampling in sub-sewershed wastewater surveillance using census data.

Sub-city, or sub-sewershed, wastewater monitoring for infectious diseases offers a data-driven strategy to inform local public health response and complements city-wide data from centralized wastewater treatment plants. Developing strategies for equitable representation of diverse populations in sub-city wastewater sampling frameworks is complicated by misalignment between demographic data and sampling zones. We address this challenge by: (1) developing a geospatial analysis tool that probabilistically assigns demographic data for subgroups aggregated by race and age from census blocks to sub-city sampling zones; (2) evaluating representativeness of subgroup populations for COVID-19 wastewater-based disease surveillance in Davis, California; and (3) demonstrating scenario planning that prioritizes vulnerable populations. We monitored SARS-CoV-2 in wastewater as a proxy for COVID-19 incidence in Davis (November 2021-September 2022). Daily city-wide sampling and thrice-weekly sub-city sampling from 16 maintenance holes covered nearly the entire city population. Sub-city wastewater data, aggregated as a population-weighted mean, correlated strongly with centralized treatment plant data (Spearman's correlation 0.909). Probabilistic assignment of demographic data can inform decisions when adapting sampling locations to prioritize vulnerable groups. We considered four scenarios that reduced the number of sampling zones from baseline by 25% and 50%, chosen randomly or to prioritize coverage of >65-year-old populations. Prioritizing representation increased coverage of >65-year-olds from 51.1% to 67.2% when removing half the zones, while increasing coverage of Black or African American populations from 67.5% to 76.7%. Downscaling had little effect on correlations between sub-city and centralized data (Spearman's correlations ranged from 0.875 to 0.917), with strongest correlations observed when prioritizing coverage of >65-year-old populations.

The finding of black currants from sect. Eucoreosma (Grossulariaceae) in the central part of southern Primorsky Territory, Russia

Background. The ever increasing anthropogenic impact on natural populations of rare and, especially, endangered plant species has recently become even more forceful. Therefore, the finding of a small black currant population representing sect. Eucoreosma (Spach) Jancz. within a natural environment in the south of Primorsky Territory appears highly important. Previously, none of the black currant species was recorded as occurring in this area. Materials and methods. Plants from the new locality were compared with accessions of Ribes nigrum L., R. ussuriense Jancz., R. pauciflorum Turcz. ex Pojark., and R. fontaneum Boczkarn. using morphological and molecular genetics techniques. Results and conclusion. A molecular genetics analysis of two chloroplast DNA fragments excluded any association of the discovered plants with R. nigrum or R. fontaneum. Meanwhile, no differences in chloroplast DNA fragments were found between these plants and R. ussuriense and R. pauciflorum accessions. A number of morphological features attested to a possibility to attribute the finding to the rare species R. ussuriense: its isolated localities had previously been reported in southern Primorsky Territory. The differences in chloroplast DNA fragments between the Siberian/Far Eastern species R. pauciflorum and the European/Siberian species R. nigrum make doubtful their possible fusion, based only on morphological characters, and require further studies.

Eccentric macular holes as a postoperative complication of macular surgery in black Africans.

The objective of this study is to report on the incidence and the characteristics of eccentric macular hole (EMH) as a complication of macular surgery with internal limiting membrane (ILM) peeling in a black African population. This is a retrospective consecutive case series. Files of 125 patients that received macular surgery were reviewed and 14 eyes of 14 patients were included in this study. Intervention consisted of pars plana vitrectomy with ILM peeling for full-thickness macular hole or epiretinal membrane. The main outcome measures were the development of EMH, their characteristics (location, number) and best-corrected visual acuity (BCVA). EMH developed in 14 eyes of 14 patients with a mean age of 64.5±9.4 years and a female predominance of 64%. The incidence of EMH was 11.2%. EMH developed on average 4.4±1.2 weeks following surgery. In 9 eyes (65%) location was temporal, in 3 eyes (21%) superotemporal and in 2 eyes (14%) inferotemporal. Multiple holes were observed in 12 eyes (86%), and 5 eyes (35%) had confluent holes. 9 eyes (64%) had only full-thickness holes, 4 eyes (29%) had both full-thickness and lamellar holes, and 1 eye (7%) had only lamellar holes. BCVA improved from 1.1±0.33logMAR to 0.89±0.26logMAR (p=0.017). EMH formation showed a very high incidence in our setting and represents a main complication for macular surgery. In all cases, EMH formed in the temporal macula and in the majority of cases they were multiple and full-thickness.

The Black and African American Connections to Parkinson’s Disease (BLAAC PD) study protocol

Determining the genetic contributions to Parkinson’s disease (PD) across diverse ancestries is a high priority as this work can guide therapeutic development in a global setting. The genetics of PD spans the etiological risk spectrum, from rare, highly deleterious variants linked to monogenic forms with Mendelian patterns of inheritance, to common variation involved in sporadic disease. A major limitation in PD genomics research is lack of racial and ethnic diversity. Enrollment disparities have detrimental consequences on the generalizability of results and exacerbate existing inequities in care. The Black and African American Connections to Parkinson’s Disease (BLAAC PD) study is part of the Global Parkinson’s Genetics Program, supported by the Aligning Science Across Parkinson’s initiative. The goal of the study is to investigate the genetic architecture underlying PD risk and progression in the Black and/or African American populations. This cross-sectional multicenter study in the United States has a recruitment target of up to 2,000 individuals with PD and up to 2,000 controls, all of Black and/or African American ancestry. The study design incorporates several strategies to reduce barriers to research participation. The multifaceted recruitment strategy aims to involve individuals with and without PD in various settings, emphasizing community outreach and engagement. The BLAAC PD study is an important first step toward informing understanding of the genetics of PD in a more diverse population.

THE TYBEE ISLAND, GEORGIA BLACK HISTORY TRAIL: A COMMUNITY APPROACH to BLACK GEOGRAPHIES

ABSTRACT Tybee Island, Georgia, was a colonial borderland between Spanish and British America before evolving into a middle-class, seaside resort in the 1800s. It continued as a popular vacation spot in the twentieth century. However, research has highlighted the island’s troubling history of racial segregation, particularly surrounding events like the Orange Crush Beach Party. Previous studies also underscored the Historical Society ignoring the island’s Black history in its exhibits. Building on this, a collaborative project emerged in 2021 involving a Georgia Southern University faculty member and undergraduate student, Tybee MLK Human Rights Organization, and Tybee Island Historical Society. The goal was to create a Black History Trail highlighting a rich yet ignored Black history and culture on the island and addressing the exclusion of Tybee’s Black population from museums and markers. This project integrates community geography, focusing on resolving problems like social exclusion, and exploring spatialities of Black life, social oppressions, and resistance. Utilizing archival research, oral history interviews, and ArcGIS, the project developed a 13-stop virtual tour using ESRI Story Maps. We conclude our paper by highlighting the lessons learned during the trail’s development, the multitude of ways the trail embodies the theory of Black geographies in practice, and the broader challenges in honoring Tybee’s Black geographies. Keywords: community geography, Black geographies, Tybee Island, tourism, memory

Micro-XCT analysis of anatomical features and dimensions of the incisive canal: implications for dental implant treatment in the anterior maxilla

BackgroundThis study used micro-focus X-ray Computed Tomography (micro-XCT) to examine the anatomical differences and dimensions of the maxillary incisive canal (MIC) in a South African population. The accurate imaging yielded dependable results that support earlier research and enhance anterior maxilla surgery planning. Furthermore, these anatomical features are compared between various racial and gender groupings in the study.MethodsUsing a micro-XCT scanner, 108 human cadaver skulls from the Pretoria Bone Collection were scanned and included in the study. Advanced volume rendering software was employed for measuring the MIC length, diameter, shape, and the buccal bone wall measurements in relation to the MIC.ResultsSignificant anatomical variation in the size and shape of the MIC was identified in the population, with variations seen between racial and gender groups. The incisive foramen (ICO) mean diameter was 6.61 mm, and the MIC length varied from 4.96 to 20.10 mm. There were significant differences in the buccal alveolar bone height between different ethnic groups and gender. Regarding morphological patterns in coronal and sagittal views, single canals were more common in the black population while Y-shaped canals were more common in the white population. The study also introduced a new metric by measuring the mean distances between teeth #11 and #21 and the ICO (1.83 mm and 1.88 mm respectively).ConclusionsThe complex anatomical differences of the MIC in a South African population were clarified. Clinicians should be aware of tooth sockets in near proximity to the MIC and perform accurate preoperative assessment using sophisticated 3-D imaging and preferable guided implant placement in the anterior maxilla.

Spatial and Racial/Ethnic Variation in the Prevalence of Cesarean Delivery in a South Carolina Medical Center.

While racial/ethnic disparities in cesarean delivery have been noted in the literature, less is known about the intersection between individual-level race/ethnicity and community-level social vulnerability as factors in cesarean delivery. The goal was to use medical record data from a large medical center combined with census tract-level data to examine patterns of social vulnerability, racial population distribution, and prevalence of cesarean delivery. Data were obtained from electronic medical records of patients from a large medical center in South Carolina from 2019 to 2020. The outcome variable was cesarean delivery (yes/no), and covariates included the year of delivery; age of patient; race/ethnicity; spoken language; BMI categories; clinical indications of anemia, hypertension, preeclampsia, and diabetes; and census tract Social Vulnerability Index (SVI). Generalized linear mixed models for multilevel binary logistic regression were used to test the main hypothesis that the census tract level Social Vulnerability Index is positively associated with cesarean delivery. Among a total of 5011 patients, we found that non-Hispanic Black mothers were more likely to have cesarean deliveries compared with non-Hispanic White mothers. After controlling for census tract-level SVI, the individual-level race/ethnicity association was no longer significant. Significant spatial autocorrelation across census tracts was evident for cesarean delivery prevalence, non-Hispanic Black population, and SVI. A high prevalence of cesarean delivery tended to cluster with high SVI and a high non-Hispanic Black population. We found that non-Hispanic Black mothers were more likely to have cesarean deliveries, which was explained by census tract differences in the SVI.

Football and Black Identity: Lifestyle Construction in A Voz da Raça in São Paulo, Brazil, in 1933

In 1930s São Paulo, Brazil, amid shifting social conditions, the black population, bolstered by movements like the Frente Negra Brasileira (Brazilian Black Front), sought social integration. Central to their efforts was the newspaper A Voz da Raça, which promoted sports events, particularly football, where black clubs gained visibility. However, racial and social segregation persisted in many clubs due to eugenics and hygiene ideologies. This study examines how A Voz da Raça portrayed lifestyle through football. Drawing on Cultural History and Bourdieu’s concept of ‘field’, it analyzes power dynamics in football and its representations. The newspaper emphasized morality, physicality, and patriotism, aligning with hygienist ideals to foster disciplined, organized lifestyles and a sense of national belonging among black individuals.

Regional distribution of anaplastic thyroid cancer in the United States

Abstract Introduction/Objective Anaplastic thyroid cancer (ATC) is an aggressive rare malignancy found in less than 2% of thyroid cancer patients. Its low occurrence rate presents challenges for collecting sufficiently large cohorts at a single institution, making statistical analysis about the disease’s spread, geographical distribution, and prevalence difficult. Nationwide data lakes such as Oracle EHR Real-World Data (ORWD, formerly Cerner Real World Data) offer a boost in cohort sizes and an opportunity to study ATC’s geographical distribution and assess regional differences. Methods/Case Report We searched ATC distribution across US regions defined by ZIP codes recorded in ORWD using multiple coding parameters, including ICD9, ICD10, and SNOMED as well as direct text searches for “anaplastic thyroid carcinoma”. We analyzed the geographical associations defined by ORWD (region) with sex, race, and age of ATC onset using the Fisher’s exact test. We combined 10 regions into 4 representative groups because of the small sample size. The groups are West Coast including the Rockies, Midwest from North Dakota to Texas, East Coast, and New England. Results (if a Case Study enter NA) Search for ATC condition codes in ORWD produced only 200 region-coded patient records across the US using multiple methods to try and identify cases. The mid-section of the US and coastal regions shows the highest numbers of ATC patients while New England and South regions show the lowest. While more women have ATC overall, the East Coast group has significantly more males (p value = 0.04). ATC is a predominantly white disease (79.8% overall) with black population increasing in East Coast group and other races (Asian/Undeclared) in West Coast (p-value < 0.001). There appears to be no significant association between age of ATC onset and the geographical groups. Conclusion The data shows geographic differences in distribution of ATC although this preliminary analysis neither explains the nature of these differences nor allows for a clearer view. The rarity of the disease complicates data analysis. This study was also limited by number of cases retrievable from the database itself and lack of granularity in coding available for ATC to find cases of interest, highlighting the difficulty of accurate tumor classifications in large data lakes. Further research into geographical distribution and environmental factors (radioactivity, pollution) of thyroid cancer using more advanced tools, such as GeoSpark, are planned.

Projections of the uncertainty on the compact binary population background using popstock

The LIGO-Virgo-KAGRA collaboration has announced the detection to date of almost 100 binary black holes that have been used in several studies to infer the features of the underlying binary black hole population. From these objects it is possible to predict the overall gravitational-wave (GW) fractional energy density contributed by black holes throughout the Universe, and thus estimate the gravitational-wave background (GWB) spectrum emitted in the current GW detector band. These predictions are fundamental in our forecasts for background detection and characterisation, with both present and future instruments. The uncertainties in the inferred population strongly impact the predicted energy spectrum, and in this paper we present a new flexible method to quickly calculate the energy spectrum for varying black hole population features, such as the mass spectrum and redshift distribution. We have implemented this method in an open-access package popstock and extensively tested its capabilities. Using popstock we investigated how uncertainties in these distributions impact our detection capabilities, and present several caveats for background estimation. In particular, we find that the standard assumption that the background signal follows a two-thirds power law at low frequencies is both waveform and mass-model dependent, and that the power-law signal is likely shallower than previously modelled, given the current waveform and population knowledge.