Disparities In Mortality Research Articles

Racial and Ethnic Disparities in Age-Specific All-Cause Mortality During the COVID-19 Pandemic

The end of the COVID-19 public health emergency (PHE) provides an opportunity to fully describe pandemic-associated racial and ethnic mortality disparities. Age-specific excess mortality differences have important downstream implications, especially in minoritized race and ethnicity populations. To characterize overall and age-specific all-cause excess mortality by race and ethnicity during the COVID-19 PHE and assess whether measured differences reflected changes from prepandemic disparities. This cross-sectional study analyzed data of all US residents and decedents during the COVID-19 PHE, aggregated by observed race and ethnicity (at time of death) and age. Statistical analysis was performed from March 2020 to May 2023. COVID-19 PHE period (March 2020 to May 2023). All-cause excess mortality (incident rates, observed-to-expected ratios) and all-cause mortality relative risks before and during the PHE. For the COVID-19 PHE period, data for 10 643 433 death certificates were available; mean (SD) decedent age was 72.7 (17.9) years; 944 318 (8.9%) were Hispanic; 78 973 (0.7%) were non-Hispanic American Indian or Alaska Native; 288 680 (2.7%) were non-Hispanic Asian, 1 374 228 (12.9%) were non-Hispanic Black or African American, 52 905 (0.5%) were non-Hispanic more than 1 race, 15 135 (0.1%) were non-Hispanic Native Hawaiian or Other Pacific Islander, and 7 877 996 (74.1%) were non-Hispanic White. More than 1.38 million all-cause excess deaths (observed-to-expected ratio, 1.15 [95% CI, 1.12-1.18]) occurred, corresponding to approximately 23 million years of potential life lost (YPLL) during the pandemic. For the total population (all ages), the racial and ethnic groups with the highest observed-to-expected all-cause mortality ratios were the American Indian or Alaska Native (1.34 [95% CI, 1.31-1.37]) and Hispanic (1.31 [95% CI, 1.27-1.34]) populations. However, higher ratios were observed in the US population aged 25 to 64 years (1.20 [95% CI, 1.18-1.22]), greatest among the American Indian or Alaska Native (1.45 [95% CI, 1.42-1.48]), Hispanic (1.40 [95% CI, 1.38-1.42]), and Native Hawaiian or Other Pacific Islander (1.39 [95% CI, 1.34-1.44]) groups. In the total population aged younger than 25 years, the Black population accounted for 51.1% of excess mortality, despite representing 13.8% of the population. Had the rate of excess mortality observed among the White population been observed among the total population, more than 252 000 (18.3%) fewer excess deaths and more than 5.2 million (22.3%) fewer YPLL would have occurred. In this cross-sectional study of the US population during the COVID-19 PHE, excess mortality occurred in all racial and ethnic groups, with disparities affecting several minoritized populations. The greatest relative increases occurred in populations aged 25 to 64 years. Documented differences deviated from prepandemic disparities.

Disparities in infectious disease-related health care utilization between Medicaid-enrolled American Indians and non-Hispanic Whites-Lessons from the first 16 months of coronavirus disease 2019 and a decade of flu seasons.

To understand why American Indian and Alaskan Native (AIAN) populations have had exceptionally high COVID-19 mortality, we compare patterns of healthcare utilization and outcomes for two serious infectious respiratory diseases-Influenza-like-illness (ILI) and coronavirus disease 2019 (COVID-19)-between American Indian and Alaskan Native (AIAN) populations (as identified in Medicaid data) and non-Hispanic Whites over the 2009-2021 period. We select all people under the age of 65 years identified as non-Hispanic White or AIAN in the New York State Medicaid claims data between 2009 and 2021. We analyze data across 10 ILI cohorts (between September 2009 and August 2020) and 4 COVID-19 cohorts (March-June 2020, July-September 2020, October-December 2020, and January-June 2021). We examine mortality and utilization rates using logistic regressions, adjusting for demographic characteristics, prior chronic conditions, and geographic location (including residence near a reservation). We stratify the analysis by rural vs. nonrural counties. We use the New York State Medicaid claims data for the analysis. We find that even among Medicaid beneficiaries, who are similar in socioeconomic status and identical in health insurance coverage, AIAN populations have much lower rates of use of outpatient services and much higher rates of acute (inpatient and emergency room) service utilization for both ILI and COVID-19 than non-Hispanic Whites. Prior to COVID-19, demographic and health status-adjusted all-cause mortality rates, including from ILI, were lower among American Indians than among non-Hispanic Whites on New York State Medicaid, but this pattern reversed during the COVID-19 pandemic. Both findings are driven by nonrural counties. We did not observe significant differences in all-cause mortality and acute service utilization comparing AIAN to non-Hispanic Whites in rural areas. The utilization and mortality disparities we identify within the Medicaid population highlight the need to move beyond insurance in addressing poor health outcomes in the American Indian population.

Trends in racial/ethnic and geographic disparities in substance use disorders mortality in the United States, 2000-2019.

Substance use disorders (SUD) are a major public health concern in the United States. This study examined racial/ethnic and state-level disparities in SUD mortality in the United States from 2000 to 2019. Age-standardized mortality rates for SUD were obtained for 5 racial/ethnic groups (White respondents, Black respondents, Latino, Asian-Pacific Islander [API], American Indian/Alaska Native [AIAN]) by state and sex from 2000 to 2019. Joinpoint regression analysis was used to model temporal trends overall and by demographic factors. From 2000 to 2019, the overall mortality rate increased from 8.0 to 28.8 deaths per 100,000 population across all groups. AIANs had the highest mortality in 2019 (57.8 per 100,000), followed by Black respondents, White respondents, Latinos, and APIs. Significant increases occurred across all racial/ethnic groups, with the greatest average annual percentage change (AAPC2000-2019) among White respondents (6.7%; 95% confidence interval [CI]: 6.2%-7.3%), APIs (6.0%, 95% CI: 5.6%-6.2%), and AIANs (5.9%, 95% CI: 5.6%-6.2%). Mortality rates increased more rapidly for females than males among White respondents, AIANs, Black respondents, and Latinos. Substantial state-level variation emerged, with the highest mortality rates in 2019 seen in West Virginia, the District of Columbia, Delaware, Ohio, and Pennsylvania. Racial/ethnic and geographic disparities in SUD mortality have widened significantly from 2000 to 2019, highlighting priority areas for prevention efforts. This study provides detailed insights into long-term trends in racial, ethnic, and geographic disparities in SUD mortality across the United States, informing targeted prevention and intervention strategies.

7442 Racial Disparities On Outcomes Of Hypoglycemia

Abstract Disclosure: S. Neupane: None. B. Neupane: None. S. Karki: None. U. Farooq: None. M. Quartuccio: None. Introduction: Numerous studies have been conducted on the differences in racial and ethnic groups' access to healthcare; some groups face greater challenges when it comes to insurance coverage and other healthcare services compared to others. Risk factors that may contribute to hypoglycemia include advanced age, concomitant conditions, aggressive hyperglycemia therapy, etc. Research on racial differences in hypoglycemia is limited. Objective:To investigate potential disparities in mortality rates, length of stay (LOS), and overall hospitalization costs between the white and black populations with the diagnosis of hypoglycemia. Methods: Using the National Inpatient Sample (NIS) for the years 2017 through 2020, we carried out a retrospective cohort study of adult patients (age >18) with a primary diagnosis of hypoglycemia. The disease and outcome codes were chosen using the International Classification of Diseases (ICD-10). The analysis was conducted using STATA. Adjusting for potential variables and calculating the adjusted odds ratio(aOR) were done using multivariate regression analysis. The student t-test was utilized to compare continuous variables, while the Fisher exact test was employed to compare proportions. Mortality was the primary outcome of the study; other secondary outcomes included LOS, total hospitalization costs, acute coronary syndrome (ACS), septic shock, pulmonary edema, acute respiratory failure (ARF), mechanical ventilation, acute respiratory distress syndrome (ARDS), acute kidney injury (AKI), and cerebrovascular accidents (CVA). Results: There was a total of 804,164 patients with the diagnosis of hypoglycemia; out of them, 515,264 were white, 200,955 were black, and the rest were from other races besides white and black. Blacks had increased LOS than whites by 0.53 days, (6.92 days vs. 7.87 days, p<0.001) and rates of mechanical ventilation (11.96% vs.10.05%, p<0.001). There were other significant outcomes in rates of acute coronary syndrome (1.59% vs.1.38%, p<0.001), septic shock (10.07% vs. 9.90%, p=0.028), and ARF (16.10% vs. 15.27%, p<0.001) on white compared to black population. There was no significant difference in the outcomes of mortality rates, total hospitalization costs, pulmonary edema, ARDS, AKI, and CVA in white compared to black population. Conclusion: In comparison to the black population, the white population had an increase in rates of ACS, septic shock, and ARF. The overall rate of LOS and mechanical ventilation was higher in the black population than in the white population. The rates of mortality, total hospital costs, pulmonary edema, ARDS, AKI, and CVA did not differ between the two groups. To prevent poorer outcomes, more research is needed to understand the pathophysiology and underlying reasons for racial differences in hypoglycemia. Presentation: 6/1/2024

Disparities in overall and site-specific cancer mortality among immigrant generations in Sweden: A nationwide follow-up study over three decades.

We examined the overall and site-specific cancer mortality disparities among first-generation - separately in adults (G1) and children (G1.5) at immigration - and second-generation (G2) immigrants and their countries of origin using population-based registries in Sweden, encompassing over 8.5 million individuals aged 20 and above residing in Sweden since 1990, with follow-up until December 31, 2023. Cox proportional hazard models were fitted, stratified by gender, to estimate hazard ratios and 95% confidence intervals compared to natives. Mortality rates for most cancers transitioned from lower in G1 towards the rate of natives in G2. However, elevated mortality rates were sustained across generations for liver cancer in males and stomach cancer in females. Among G2, mortality from lymphohematopoietic cancers in males, and lung and cervix uteri cancers in females were elevated - by 10%, 9%, and 17% respectively compared to natives. Country of origin analyses revealed substantial disparities. For instance, G2 females with Nordic parental origin had a 13% higher risk of death from lung cancer, while those with non-Western parental origin had a 54% lower risk as compared to natives. These findings suggest a generational and arrival-age dynamics of cancer mortality and highlight target groups for cancer prevention and control among immigrants.

Systematic review of tuberculous meningitis in high-risk populations: mortality and diagnostic disparities.

Aim: Tuberculous meningitis (TBM) is one of the most severe clinical forms of tuberculosis (TB). Since epidemiological studies can contribute to TB control, we conducted a review and meta-analysis of epidemiological publications of adults TBM cases in countries with high incidence of TB.Materials & methods: The search resulted in 11,855 articles, in which 21 ultimately were included in our review and 15 in our meta-analysis.Results: TBM mortality was 25% with death rates of 70% in Africa. The review showed different and non-concordant diagnostic techniques and treatment schemes.Conclusion: Adults living in the African region are at high risk of death from TBM, highlighting an urgent need of guidelines to support diagnosis and treatment, and ultimately, to reduce mortality.

Impact of Structural Racism and Social Determinants of Health on Disparities in Breast Cancer Mortality.

The striking ethnic and racial disparities in breast cancer mortality are not explained fully by pathological or clinical features. Structural racism contributes to adverse conditions that promote cancer inequities, but the pathways by which this occurs are not fully understood. Social determinants of health (SDOH), such as economic status and access to care, account for a portion of this variability, yet interventions designed to mitigate these barriers have not consistently led to improved outcomes. Based on the current evidence from multiple disciplines, we describe a conceptual model in which structural racism and racial discrimination contribute to increased mortality risk in diverse groups of patients by promoting adverse SDOH that elevate exposure to environmental hazards and stress; these exposures in turn contribute to epigenetic and immune dysregulation, thereby altering breast cancer outcomes. Based on this model, opportunities and challenges arise for interventions to reduce racial and ethnic disparities in breast cancer mortality.

Racial discrepancies in initial presentation and diagnosis of patients with endometrial cancer.

89 Background: Endometrial cancer incidence and mortality are increasing, particularly in Black patients who have more aggressive non-endometrioid subtypes. Racial disparities in mortality may be partially contributable to early clinical factors including recognition of symptoms, type of evaluation, and referral timing. We evaluated differences in factors related to symptom appraisal and delays in diagnosis by race and histology. Methods: In this retrospective cohort study, we included patients diagnosed with endometrial cancer from 01/01/2019 to 09/01/2023 at a single institution who were enrolled in the Discovery and Evaluation of Testing for Endometrial Cancer in Tampons (DETECT) study. Demographic characteristics and factors regarding initial presentation and workup were obtained from the electronic medical record. We evaluated patient-reported length and type of symptoms at initial presentation, diagnostic imaging type, and time from initial presentation to time of imaging, tissue sampling, and referral to gynecologic oncology. We assessed differences by race and histology (endometrioid vs. non-endometroid) using chi-square and Kruskal-Wallis tests and analysis of variance. Results: Of the 335 patients included in our analysis, 237 (70.7%) had endometrioid and 98 (29.3%) had non-endometrioid histology. Patients with endometrioid histology were significantly more likely to be younger, White, non-smokers, and have higher obesity levels by body mass index than those with non-endometrioid histology (p=<0.01). The length of symptoms at time of initial presentation was significantly longer in Black patients overall (p=0.01) and in Black patients with endometrioid histology compared to their White counterparts (p=0.04). A similar trend was seen in patients with non-endometrioid histology but was not statistically significant (p=0.15). There was no difference in type of symptoms reported. The type of imaging (p=0.005) differed significantly between endometrioid and non-endometrioid groups. White patients were more likely to have a transvaginal ultrasound performed at initial presentation (p=0.004). Black patients with endometrioid endometrial cancer were more likely to have a longer time period from initial presentation to referral to gynecologic oncology (p=0.04) despite having a shorter time between initial presentation and endometrial sampling (p=0.04). Conclusions: In our cohort, Black patients with endometrial cancer were more likely to have experienced symptoms for a longer time period prior to presentation, less likely to be evaluated with transvaginal ultrasound, and had a longer time period between initial presentation and referral to gynecologic oncology compared to White patients. Raising awareness and targeting these early steps in evaluation and detection of endometrial cancer may help decrease racial disparities in outcomes.

S2330 Racial/Ethnic Disparities in Gastric Cancer Incidence and Mortality Among Individuals Aged 50 Years and Above: A Population-Based Analysis

S2330 Racial/Ethnic Disparities in Gastric Cancer Incidence and Mortality Among Individuals Aged 50 Years and Above: A Population-Based Analysis

S416 Unequal Burden: Sex and Racial Disparities in Colon Cancer Mortality Across Anatomical Sites in the United States

S416 Unequal Burden: Sex and Racial Disparities in Colon Cancer Mortality Across Anatomical Sites in the United States

S1985 Trends and Disparities in Autoimmune Hepatitis-Related Mortality in the United States: A Population-Based Study From 2003-2022

S1985 Trends and Disparities in Autoimmune Hepatitis-Related Mortality in the United States: A Population-Based Study From 2003-2022

S115 Gender and Racial Disparities in Pancreatic Cancer Mortality in Texas: A Statewide Population-Based Study

S115 Gender and Racial Disparities in Pancreatic Cancer Mortality in Texas: A Statewide Population-Based Study

Associations Between Infant Formula Exposure, Housing Instability and Postneonatal Mortality Among Participants in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC).

To quantify infant mortality rates (IMR) using expanded racial categories, and to examine associations between infant formula exposure, housing instability and postneonatal mortality among Minnesota WIC Participants. Births in Minnesota from 2014 through 2019 (n = 404,102) and associated infant death records (n = 2034) were used to calculate neonatal and postneonatal rates using expanded racial categories. Those births that participated in the WIC program (n = 170,011) and their linked death records (n = 853) were analyzed using logistic regression to examine associations between formula exposure, housing instability, and postneonatal death. Postneonatal IMR was more than twice as prevalent among Black (African American) as East African immigrant infants (IMR = 3.9 vs 1.5). After adjustment for confounding (term status and nativity of mother (U.S. vs foreign born), infants exposed to formula by 28days were four times as likely to die in the postneonatal period as those without formula exposure (aOR = 4.0; 95% CI 3.2-4.9). WIC participants who experienced housing instability at birth were 1.7 times as likely to lose an infant in the postneonatal period (28 to 364days of age) as those in stable housing (aOR = 1.7; 95% CI 1.2, 2.4). Disaggregating Black mortality rates revealed inequities in infant mortality among Black families of varied backgrounds. Formula exposure and housing instability are modifiable risk factors associated with postneonatal mortality. Appropriate interventions to reduce barriers to breastfeeding and provide housing stability for vulnerable families could reduce disparities in postneonatal mortality.

Racial Differences in Adoption and Outcomes of Transcarotid Artery Revascularization among High-Risk Adults with Carotid Artery Stenosis

Differential access to new technologies may contribute to racial disparities in surgical outcomes but has not been well-studied in the treatment of carotid artery stenosis. We examined race-based differences in adoption and outcomes of transcarotid artery revascularization (TCAR) among high-risk non-Hispanic (NH) NH Black and NH white adults undergoing carotid revascularization. We conducted a retrospective analysis of TCAR, transfemoral carotid artery stenting (TF-CAS), and carotid endarterectomy (CEA) procedures performed for carotid artery stenosis from 1/2015 to 7/2023 in the Vascular Quality Initiative. NH Black and NH white adults were included if they met Centers for Medicare & Medicaid Services high-risk criteria. Hospitals and physicians were categorized as TCAR-capable if they had previously performed at least one TCAR prior to the time of a given procedure. We fit logistic and linear regressions, adjusted a priori for common demographic, clinical, and disease characteristics, to estimate associations of race with receipt of TCAR (versus CEA or TF-CAS), and to explore associations between race, hospital and physician characteristics, and perioperative composite stroke/death/myocardial infarction. Of 159,471 high-risk patients undergoing revascularization for carotid artery stenosis (mean age 72 years, 38.5% female, 5.3% NH Black), 28,722 (18.0%) received TCAR, including 16.9% of NH Black adults and 18.1% of NH white adults (P<0.001). After controlling for patient and disease characteristics, NH Black patients were less likely than NH white patients to receive TCAR (aOR 0.92, 95% CI 0.87 to 0.99). The use of TCAR did not vary by race among patients treated at TCAR-capable hospitals (aOR 0.98, 95% CI 0.91 to 1.05) or by TCAR-capable physicians (aOR 1.01, 95% CI 0.93 to 1.10); however, NH Black race was associated with lower odds of receiving treatment in these settings (TCAR-capable hospital: aOR 0.93 [0.88 to 0.98]; TCAR-capable physician: aOR 0.92 [0.87 to 0.98]). NH Black race was associated with higher odds of stroke/death/MI in the full cohort (aOR 1.18, 95% CI 1.03 to 1.36), but not in the subgroup of patients who received TCAR (aOR 0.87, 95% CI 0.56 to 1.34). TCAR attenuated racial disparities in perioperative morbidity and mortality associated with carotid revascularization, but NH Black adults were less likely than NH white adults to receive TCAR. Relatively worse access for NH Black adults to technologically-advanced treatment settings may partially explain the broader persistence of race-based differences in carotid revascularization treatment patterns and outcomes.

S551 Unraveling Regional Disparities in Early-Onset Colorectal Cancer Mortality Across the United States Between 2000 - 2022

S551 Unraveling Regional Disparities in Early-Onset Colorectal Cancer Mortality Across the United States Between 2000 - 2022

S357 Disparities in Colorectal Cancer Mortality Among Individuals with Chronic Kidney Disease in the United States: A CDC WONDER Database Analysis

S357 Disparities in Colorectal Cancer Mortality Among Individuals with Chronic Kidney Disease in the United States: A CDC WONDER Database Analysis

Associations of diabetes and mortality among colorectal cancer patients from the Southern Community Cohort Study.

We investigated associations between diabetes and mortality among participants with incident colorectal cancer (CRC) from the Southern Community Cohort Study. Participants (73% non-Hispanic Black; 60% income < $15,000) were recruited between 2002-2009. Diabetes was self-reported at enrollment and follow-up surveys at approximately 5-year intervals. Incident CRC and mortality were identified via state registries and the National Death Index. Proportional hazards models calculated associations between diabetes with overall, CRC-specific mortality among 1059 participants with incident CRC. Diabetes prior to diagnosis is associated with elevated overall (hazard ratio [95% confidence interval]: (1.46[1.22-1.75]), and CRC-specific mortality (1.36[1.06-1.74])) after adjustment for tumor stage. For non-Hispanic Black and non-Hispanic White participants, consistent associations were observed for overall (1.35[1.10-1.66] vs. 1.89[1.31-2.72], respectively, p-interaction = 0.11) and CRC-specific mortality (1.30[0.99-1.71] vs. 1.77[1.06-2.95], respectively, p-interaction = 0.28). For individuals with incomes <$15,000/year, associations with overall (1.44[1.15-1.79]) and CRC-specific mortality (1.28[0.94-1.73]) were similar to the full sample. Associations with overall (1.71[1.37-2.13]) and CRC-specific mortality (1.65[1.22-2.22]) were highest for diabetes ≥ 10 years at diagnosis. Pre-diagnosis diabetes is associated with higher mortality among participants with incident CRC from a predominantly non-Hispanic Black cohort with lower socioeconomic status. The higher prevalence of diabetes in this population may contribute to racial disparities in CRC mortality.

S1962 Trends and Disparities in Hepatorenal Syndrome-Related Mortality in the United States From 1999-2020: A Nationwide Analysis

S1962 Trends and Disparities in Hepatorenal Syndrome-Related Mortality in the United States From 1999-2020: A Nationwide Analysis

S1683 Trends and Disparities in Chronic Hepatitis-Related Mortality in the United States, 1999-2020: An Epidemiological Analysis

S1683 Trends and Disparities in Chronic Hepatitis-Related Mortality in the United States, 1999-2020: An Epidemiological Analysis

Current Burden of and Geographic Disparities in Liver Mortality and Access to Liver Transplant

Liver disease is a leading cause of mortality in the US. Liver transplant can be a lifesaving procedure for patients with severe liver disease. To assess temporal trends and geographic variance in liver-related mortality (LRM) and liver transplant in the US. In this cohort study, the frequencies and geographic variance of LRM in 2018 and 2021 were obtained in a cross-sectional analysis of the Underlying Cause of Death data available on the Centers for Disease Control and Prevention's Epidemiologic Research database. The number of livers donated and transplanted according to the state of residence of each donor and recipient were obtained from the United Network for Organ Sharing. Liver-related mortality in 2018 and 2021, overall and by state, as well as the liver transplant rate according to state of residence of recipient and donor. Overall LRM in the US was 93 418 in 2021, with a crude rate of 28.1 per 100 000 individuals, an increase of 19.1% compared with rates seen immediately prior to the COVID-19 pandemic in 2018 (77 282 [23.6 per 100 000 individuals]). Liver-related mortality in 2021 varied several-fold between states, from 18.4 per 100 000 individuals per year in Utah to 65.9 per 100 000 individuals per year in New Mexico. The mean number of liver-related deaths per transplant from all donor sources (in state and out of state) was 7.2 in the lowest LRM quintile compared with 21.5 in the highest (95% CI, 12.1-16.6; SE, 1.1; P < .001). Ten states had no liver transplant center. Paradoxically, residents of states with the highest LRM had a much lower rate of liver transplant (at any location) from organs procured from in-state residents than states with the lowest LRM quintile (13.0% vs 35.2% in-state donors; 95% CI, 14.1%-30.3%; SE, 3.9%; P < .001). This study suggests that rates of LRM have increased dramatically since the COVID-19 pandemic and vary several-fold between states. Rates of liver transplant are paradoxically lowest among residents living in states with the highest LRM. These findings highlight apparent geographic disparities in access to liver transplant that allocation policy cannot address.