Highest Income Quartile Research Articles

P-1406. Racial Disparities in HIV Prevalence and Complications in Hospitalized Patients

Abstract Background Racial and ethnic disparities in HIV care and outcomes are well known. Multiple causes have been reported including inequalities in access to care and pre-exposure prophylaxis (PrEP), housing instability, lack of antiretroviral insurance coverage, and economic disadvantages. We aim to evaluate the disparities in HIV prevalence and outcomes in hospitalized patients. Methods We analyzed the 2020 United States National Inpatient Sample (NIS) data of all patients with a diagnosis of HIV admitted inpatient. The NIS database is the largest publicly available database of patients hospitalized in the United States and contains approximately 20% stratified samples of all hospital discharges in the United States. Results There were 38,666 admissions with a diagnosis of HIV in 2020, of which 30.3% were females. 51.6% of the HIV patients were Blacks, 30% Whites, 13.7% Hispanics, 0.7% Asians, 0.6% Native Americans, and 3.4% others. The mean age was 50.8 years, and the mean length of stay was 6.4 days. In the bivariate analysis, the Hispanics were more likely compared to others to have Kaposi Sarcoma (1.8% vs. 1.1%, p< 0.001), cryptococcal meningitis (1.5% vs. 0.6%, p< 0.001), disseminated coccidioidomycosis (0.2% vs 0.0%, p< 0.001), hepatitis C (6.7% vs. 5.3%, p< 0.001), Covid-19 infection (7.9% vs. 4.9%, p< 0.001) and pneumocystis jiroveci pneumonia (3.2% vs. 2.3%, p< 0.001). The multivariate analysis showed no statistically significant racial or ethnic difference in all-cause mortality (p=0.17). However, patients in the highest income quartile had significantly lower all-cause mortality compared to those in the lowest quartile after adjusting for variables including race, ethnicity, and HIV complications (OR 0.69, 95% CI 0.54-0.89, p=0.004). Conclusion Our study showed that the prevalence of HIV is still disproportionally high in Blacks. While about 16% of all patients in our dataset are Black, about 52% of the HIV patients are Black. However, Hispanic patients appear to have more HIV complications. Cultural appropriate interventions to prevent HIV acquisition, increase HIV screening, and early initiation of treatment in racial and ethnic minorities are warranted. Mining a national database can provide insights into morbidity and mortality trends in patients living with HIV. Disclosures All Authors: No reported disclosures

Temporal changes in hospital readmissions for postpartum hypertension in the US, 2010 to 2019; a serial cross-sectional analysis.

Hypertension is the most common primary diagnosis associated with postpartum readmissions within 42 days of delivery hospitalization. In the United States, nearly half of the cases of eclampsia, a severe form of preeclampsia, develop during the postpartum period, and the postpartum onset of hypertensive disorders of pregnancy, like antepartum hypertension poses long-term health risks to pregnant individuals, including an increased likelihood of developing overall cardiovascular disease, coronary heart disease, heart failure, and chronic hypertension. In this paper, we estimate the trends in the incidence of readmissions for postpartum hypertension within 42 days of delivery discharge in the US, disaggregated by median household income. Using National Readmissions Database, we calculated the readmission rates for postpartum hypertension, both overall and stratified by ZIP Code median household income for each year between 2010 and 2019. We also calculated the percentage change and average annual growth rate (AAGR) in the rate of readmissions for postpartum hypertension between 2010 and 2019 for each income group. We then used a logistic regression model to compare the temporal changes in readmission for postpartum hypertension between the lowest and the highest income quartiles. The estimated incidence of postpartum hypertension readmissions doubled for all the income groups between 2010 and 2019 (0.36% vs. 0.8%). While the incidence of postpartum hypertension cases was higher among the lowest-income quartile, the increase in postpartum hypertension readmissions between 2010 and 2019 was greater in the highest-income quartile. Moreover, the incidence of postpartum hypertension readmissions rose faster in pregnant patients without a history of hypertension compared to those with a history of hypertension (AAGR 8.3% vs. 5.1%). The increasing postpartum hypertension readmission burden suggests rising future health risks among mothers and a growing cost burden to the U.S. healthcare system. The higher rate of increase in postpartum hypertension readmissions among people without a history of hypertension calls for blood pressure checking in the postpartum period for all patients regardless of risk status.

Disparities in Operative Fixation for Acromioclavicular Joint Injuries: An Analysis of Insurance Status.

Acromioclavicular (AC) joint injury management has historically been guided by the severity and grade of the injury. However, recent debates have emerged regarding the role of surgical intervention for these injuries. Insurance-based disparities in surgical treatment have been well-documented across various orthopedic conditions. This study seeks to determine whether insurance coverage influences the likelihood of undergoing surgical fixation for AC joint dislocation. We conducted a retrospective analysis of the National Readmissions Database (NRD) spanning from 2016 to 2021. Using International Classification of Diseases, Tenth Revision (ICD-10) codes, we identified patients with isolated AC joint dislocation and determined whether they received surgical intervention based on ICD-10 procedural codes. A total of 5,654 cases of AC joint dislocation were identified, of which 219 (3.9%) underwent operative management. Statistical analysis was conducted via univariate analysis using Pearson's chi-square test, followed by multivariable logistic regression to assess the significance of demographic and socioeconomic factors on likelihood of operative intervention. Results were presented as odds ratios (ORs) and 95% confidence intervals. After adjusting for demographic and socioeconomic variables including age, sex, income quartile, and medical comorbidities, patients with Medicaid insurance were significantly less likely to receive surgical intervention for AC joint dislocation compared to those with private insurance (OR 0.51; 95% CI 0.34-0.76; p < 0.01). Furthermore, individuals residing in areas with the highest income quartile by ZIP code exhibited the greatest likelihood of undergoing surgery (OR 1.91; 95% CI 1.27-2.89; p < 0.01), in contrast to those in lower-income areas. This study suggests that patients insured by Medicaid are less likely to undergo surgery for acromioclavicular joint injury compared to those with private insurance. Additionally, patients from higher-income areas were more likely to receive operative treatment. These findings emphasize the need for more standardized treatment guidelines, particularly as the controversy surrounding operative versus nonoperative management of these injuries persists, and no definitive gold standard surgical technique exists. Surgeons must remain vigilant of these biases that may influence clinical decision-making.

Continued increasing social inequality in mortality in Denmark - a nationwide register-based follow-up on previous mortality studies.

Social inequality in mortality has increased in many countries worldwide and does not appear to be levelling off. Denmark is no exception, and the latest developments are presented in this short communication. Trends in life expectancy and changes in the shape of the age-at-death distribution are calculated from nationwide register data on income and education linked to mortality data. Since 1987, the difference in life expectancy between the lowest and highest income quartiles has increased by 5.4 years for men and by 2.0 years for women. The difference in life expectancy (at age 30) between education groups has also increased. The latest developments indicate a decline in life expectancy for men and women in the lowest income quartile and with the shortest education. Reducing social inequality in health and mortality has been on the agenda for successive Danish governments for more than 20 years, but social inequality in life expectancy is still increasing.

Spatial associations between measures of public transportation and diabetic foot ulcer outcomes in the state of Georgia: 2016–2019

IntroductionThere are limited data regarding the associations between public transportation reliance, availability, and diabetic foot ulcer (DFU)-related amputations.Research design and methodsWe used visit-level data from the Georgia 2016–2019 Healthcare Cost and Utilization Project database and obtained transportation variables from open sources. Using Bayesian spatial-temporal models, we assessed the associations between transportation and DFU-related amputations within each quartile of poverty status indicators at the ZIP code tabulation area (ZCTA) level. We used the proportion of adults who use public transportation to commute, distance to nearest transit stop, and per capita expense on public transportation as proxies for public transportation reliance, availability, and both, respectively.ResultsOf 114 606 DFUs, 21 388 (19%) were associated with a major or minor amputation. Among ZCTAs at the highest income quartile, reduced amputation risk was associated with the proportion of adults who use public transportation to commute to work (relative risk (RR)=0.29, 95% CI 0.09 to 0.97 per IQR increase of 1.13%) and per capita expense on public transportation (RR=0.78, 95% CI 0.63 to 0.78 per IQR increase of 6 cents). In metropolitan Georgia, a 1 IQR (261 m) increase in distance to the nearest transit stop was associated with lower amputation risk among ZCTAs at the lowest income quartile (RR=0.47, 95% CI 0.26 to 0.85).ConclusionIn Georgia, public transportation reliance and availability are protective against DFU-related amputations in high-income but not among low-income ZCTAs. Reducing disparities in DFU-related amputations requires interventions to mitigate transportation barriers to care.

Obstetric and neonatal outcomes in women with Ankylosing spondylitis - an evaluation of a population database

BackgroundAnkylosing Spondylitis (AS) is a systemic chronic rheumatic disease characterized by involvement of the axial skeletal and sacroiliac joints. Although this disease is not rare amongst women of reproductive age, data regarding pregnancy outcomes have demonstrated conflicting results. We therefore aimed to compare pregnancy and perinatal outcomes between women who suffered from AS to those who did not.MethodsA retrospective cohort study using the Healthcare Cost and Utilization Project, Nationwide Inpatient Sample (HCUP-NIS). Included in the study were all pregnant women who delivered or had a maternal death in the US between 2004 and 2014. Women with an ICD-9 diagnosis of AS before or during pregnancy were compared to those without. Pregnancy, delivery, and neonatal outcomes were compared between the two groups using multivariate logistic regression models adjusting for potential confounders.ResultsA total of 9,096,788 women were inclusion in the analysis. Amongst them, 383 women (3.8/100,000) had a diagnosis of AS and the rest were controls. Women with AS, compared to those without, were more likely to be older; Caucasian; from higher income quartiles; suffer from thyroid disorders, and have multiple pregnancies (p < 0.001, all). After adjusting for confounders, patients in the AS group, compared to those without, had a higher rate of cesarean delivery (CD) (aOR 1.47, 95% CI 1.14–1.91, p = 0.003); gestational diabetes (aOR 1.55, 95% CI 1.02–2.33, p = 0.038); and placenta previa (aOR 3.6, 95% CI 1.6–8.12, p = 0.002). Regarding neonatal outcomes, patients with AS, compared to those without, had a higher rate of small-for-gestational-age (SGA) neonates (aOR 2.19, 95% CI 1.22–3.93, p = 0.009); and intrauterine fetal death (IUFD) (aOR 3.46, 95% CI 1.11–10.83, p = 0.033).ConclusionWomen diagnosed with AS have an increased risk of obstetric complications, including CD, as well as an increased risk of SGA and IUFD.

Analysis of the Association between Eosinophilic Esophagitis and MASLD: Retrospective, Observational, Cohort Analysis of the National Inpatient Sample 2016-2020.

Eosinophilic esophagitis (EoE) is a chronic immune-mediated inflammatory condition. Associated pathologies for EoE are similar to those with metabolic-dysfunction-associated steatotic liver disease (MASLD). This study assesses whether an association exists between MASLD and EoE. We used National Inpatient Sample (NIS) 2020 data to identify adult patients. ICD-10 codes were used to identify patients with MASLD and EoE. The relationship between MASLD and EoE was assessed by multivariate analysis after adjusting for confounding factors, such as patient demographics, hospital characteristics, Charlson comorbidity index, obesity, obstructive sleep apnea (OSA), diabetes, hypertension (HTN), hyperlipidemia (HLD), inflammatory bowel disease (IBD), celiac disease (CD), gastroesophageal reflux disease (GERD), smoking, alcohol use, and irritable bowel syndrome (IBS). Out of 26 million patients, 4,820 had a diagnosis of EoE. The majority of the patients were between 18 and 44 years of age (47.82%), male (54.05%), had private insurance (50.1%), and were in the highest income quartile (29.25%). A higher incidence of MASLD was noted in the EoE group than those without (6.1% vs.2.9%, p<0.001). After adjusting for confounding factors, MASLD had 2.38 times higher odds of having EoE (95% CI-1.82-3.11, p<0.001). Other factors noted to be associated with higher odds of EoE included younger age, Caucasian race, IBS, GERD, IBD, and CD. Our study reports a novel finding that MASLD and EoE are associated. Future prospective studies are needed to confirm and understand the clinical significance of this relationship and how one disease affects the other.

Abstract B013: Sociodemographic differences and inpatient outcomes of opioid use disorder among patients hospitalized for head and neck cancer in the United States

Abstract Background: Opioid use disorder (OUD) is a rising public health concern in the United States. It poses substantial challenges in the management of head and neck cancers (HNC), given the pain associated with the disease. This study examines the sociodemographic differences in OUD among patients hospitalized for HNC in the United States as well as in-patient outcomes of HNC patients with OUD. Methods: We analyzed weighted retrospective data from the 2016 to 2020 National Inpatient Sample database. We included patients 18 years or older with principal discharge diagnoses of HNC with or without secondary diagnoses of OUD using specific ICD-10 codes. OUD was defined as opioid abuse, dependence, poisoning or adverse effects. Baseline sociodemographic and hospital characteristics of HNC patients with or without OUD were compared using χ2 for categorical variables and Student’s t-test for continuous variables. We examined sociodemographic characteristics associated with OUD using multivariable logistic regression models. We assessed three in-patient outcomes including mortality, length of stay and total hospitalization charge (THC) adjusted for inflation. Further we included interaction terms to explore the combined effects of relevant sociodemographic predictors with depression. Results: There were 117,085 hospitalizations for HNC between 2016 and 2020. Among HNC hospitalizations, 3.2% were opioid users and 2.36% had a secondary diagnosis of OUD. The mean age of HNC pts was 63.3 years (SD 0.08). 78.3% were Non-Hispanic White, 11.8% Non-Hispanic Black, 6.7% Hispanic and 3.2% Asians/Pacific Islanders. HNC patients with OUD had higher odds of being female (aOR 1.32; 95% CI 1.09, 1.59) and having more than one comorbidity (aOR 1.088; 95% CI 1.047, 1.132). There were lower odds of OUD with older age &amp;gt;70 years (aOR: 0.25; 95% CI 0.10, 0.59), private insurance (aOR 0.66; 95% CI 0.50, 0.87), higher income quartiles (aOR 0.66; 95% CI 0.50, 0.87) and with hospital regions in the South compared to the North-East United States (aOR 0.57; 95% CI 0.43, 0.74). There was no statistically significant interaction between MDD and gender (aOR 1.27; 95% CI 0.80, 2.04) among patients with HNC and OUD. OUD was not significantly associated with increased mortality in patients hospitalized for HNC (aOR 1.39, 95% CI 0.83, 2.33), however OUD was associated with a greater LOS by 3.6 days (95% CI 2.52, 4.60) and an increased THC of $26,947 (95% CI 13232, 40662). Conclusion: Our study demonstrates significant sociodemographic disparities in the prevalence of OUD among head and neck cancer hospitalizations in the US. Female patients and those with multiple comorbidities had higher odds of OUD. Additionally, OUD was significantly associated with an increased LOS and THC. These findings highlight the need for targeted interventions that address the unique needs of vulnerable populations with OUD and HNC. Citation Format: Ted O Akhiwu, Inemesit Akpan, Michael Imeh, Nosayaba Osazuwa-Peters. Sociodemographic differences and inpatient outcomes of opioid use disorder among patients hospitalized for head and neck cancer in the United States [abstract]. In: Proceedings of the 17th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2024 Sep 21-24; Los Angeles, CA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2024;33(9 Suppl):Abstract nr B013.

The impact of socioeconomic determinants on the access to care and survival in patients with spinal chordomas- a national cancer database analysis.

Chordomas are rare malignant neoplasms primarily treated surgically. Disparities related to race and socioeconomic status, may affect patient outcomes. This study aims to identify prognostic factors for access to care and survival in patients with spinal chordomas. The NCDB database was queried between the years 2004 and 2017. Kaplan-Meier curves were constructed to compare survival probabilities among different groups, based on race and socioeconomic determinents. 1769 patients were identified, with 87% being White, 5% Hispanic, 4% Black, and Asian each. The mean age was 61.3 years. Most patients received care at academic/research centers and lived in a large metropolitan area, with no difference between races. A significantly higher percentage of Black patients did not undergo surgery (p < 0.001), with no statistically significant difference in survival between races (p = 0.97). A higher survival probability was seen in patients with other government insurances (p < 0.0001), in higher income quartiles (p < 0.0001), in metropolitan areas (p = 0.023), and at an academic/research center (p < 0.0001). A lower survival probability was seen in patients who are uninsured, in rural areas, and at community cancer programs (p < 0.0001). This study highlights disparities in access to surgical intervention for patients with spinal chordomas, especially among Black individuals. It emphasizes the significant impact of insurance status and income on access to surgical care and highlights geographical and institutional variations in survival rates. Addressing socioeconomic differences is crucial for fostering equity in neurosurgical outcomes.

Impact of proton versus photon adjuvant radiotherapy on overall survival in the management of skull base and spinal chordomas: a National Cancer Database analysis.

Chordomas are rare tumors that originate from undifferentiated remnants of the notochord. Currently, there are no established guidelines regarding the choice of adjuvant radiation modality for patients surgically treated for chordomas. Using a nationwide, multicenter database, the authors aimed to compare long-term survival outcomes associated with the use of proton or photon adjuvant therapy for the management of chordomas of skull base and spine. The National Cancer Database (NCDB) was queried for chordoma cases from 2004 to 2017. Patient, tumor, and treatment characteristics were extracted from the database. The primary outcome was overall survival (OS). Kaplan-Meier survival analyses were conducted to investigate differences in outcome on propensity score-matched cohorts of patients treated with proton or photon adjuvant radiotherapy. Of the 3490 patients available, 424 met the inclusion criteria for this study. In the prematching analysis, patients receiving adjuvant photon therapy were significantly older (median age 57.0 vs 45.0 years, p < 0.001) and were more commonly male (61% vs 43%, p < 0.001) compared with those receiving proton therapy. Races were equally distributed among radiotherapy modalities (p = 0.64). Patients with chordomas of the mobile spine or sacrum were less likely to receive proton compared with photon therapy (37% vs 58%). Patients receiving proton therapy were more often represented among private insurance holders (69% vs 52%, p < 0.001) as well as in the highest income quartile (52% vs 40%, p = 0.008). Patients traveled farther to receive proton, as opposed to photon, therapy (median 59.0 vs 34.9 miles, p < 0.001). On postmatching Kaplan-Meier analysis encompassing all chordoma cases, no difference in OS between photon and proton therapy was revealed (HR 0.75, 95% CI 0.39-1.44; p = 0.39). A Kaplan-Meier analysis only including patients with skull base chordomas reached similar results (HR 0.83, 95% CI 0.31-2.22; p = 0.71). In patients with spine chordomas, however, a significant difference was found, as proton therapy exhibited a superior OS over photon therapy (HR 0.28, 95% CI 0.09-0.81; p = 0.012). Based on this nationwide analysis, patients with private insurance and higher income were more likely to receive proton adjuvant radiotherapy, while those with spinal or sacral chordomas were less likely to receive this modality. Despite this disparity, an OS benefit was observed in patients with chordomas of the spine and sacrum who received adjuvant proton therapy, in comparison with a matched cohort of patients treated with photon therapy. Conversely, this advantageous outcome was not evident in cases of chordomas located at the skull base.

Examining barriers to care: a retrospective cohort analysis investigating the relationship between hospital volume and outcomes in pediatric patients with cerebral arteriovenous malformations.

Comprehensive data on treatment patterns of pediatric cerebral arteriovenous malformations (AVMs) are lacking. The authors' aim was to examine national trends, assess the effect of hospital volume on outcomes, and identify variables associated with treatment at high-volume centers. Pediatric AVM admissions (for ruptured and unruptured lesions) occurring in the US in 2016 and 2019 were identified using the Kids' Inpatient Database. Demographics, treatment methods, costs, and outcomes were recorded. The effect of hospital AVM volume on outcomes and factors associated with treatment at higher-volume hospitals were analyzed. Among 2752 AVM admissions identified, 730 (26.5%) patients underwent craniotomy, endovascular treatment, or a combination. High-volume (vs low-volume) centers saw lower proportions of Black (8.7% vs 12.9%, p < 0.001) and lowest-income quartile (20.7% vs 27.9%, p < 0.001) patients, but were more likely to provide endovascular intervention (19.5%) than low-volume institutions (13.7%) (p = 0.001). Patients treated at high-volume hospitals had insignificantly lower numbers of complications (mean 2.66 vs 4.17, p = 0.105) but significantly lower odds of nonroutine discharge (OR 0.18 [95% CI 0.06-0.53], p = 0.009) and death (OR 0.13 [95% CI 0.02-0.75], p = 0.023). Admissions at high-volume hospitals cost more than at low-volume hospitals, regardless of whether intervention was performed ($64,811 vs $48,677, p = 0.001) or not ($64,137 vs $33,779, p < 0.001). Multivariable analysis demonstrated that Hispanic children, patients who received AVM treatment, and those in higher-income quartiles had higher odds of treatment at high-volume hospitals. In this largest study of US pediatric cerebral AVM admissions to date, higher hospital volume correlated with several better outcomes, particularly when patients underwent intervention. Multivariable analysis demonstrated that higher income and Hispanic race were associated with treatment at high-volume centers, where endovascular care is more common. The findings highlight the fact that ensuring access to appropriate treatment of patients of all races and socioeconomic classes must be a focus.

Disparities in access to hematopoietic cell transplant persist at a transplant center

Disparities in access to hematopoietic cell transplant (HCT) are well established. Prior studies have identified barriers, such as referral and travel to an HCT center, that occur before consultation. Whether differences in access persist after evaluation at an HCT center remains unknown. The psychosocial assessment for transplant eligibility may impede access to transplant after evaluation. We performed a single-center retrospective review of 1102 patients who underwent HCT consultation. We examined the association between race/ethnicity (defined as Hispanic, non-Hispanic Black, non-Hispanic White, and Other) and socioeconomic status (defined by zip code median household income quartiles and insurance type) with receipt of HCT and Psychosocial Assessment of Candidates for Transplantation (PACT) scores. Race/ethnicity was associated with receipt of HCT (p = 0.02) with non-Hispanic Whites comprising a higher percentage of HCT recipients than non-recipients. Those living in higher income quartiles and non-publicly insured were more likely to receive HCT (p = 0.02 and p < 0.001, respectively). PACT scores were strongly associated with income quartiles (p < 0.001) but not race/ethnicity or insurance type. Race/ethnicity and socioeconomic status impact receipt of HCT among patients evaluated at an HCT center. Further investigation as to whether the psychosocial eligibility evaluation limits access to HCT in vulnerable populations is warranted.

Failure to rescue following emergency general surgery: A national analysis

BackgroundFailure to rescue (FTR) is increasingly recognized as a quality metric but remains understudied in emergency general surgery (EGS). We sought to identify patient and operative factors associated with FTR to better inform standardized metrics to mitigate this potentially preventable event. MethodsAll adult (≥18 years) non-elective hospitalizations for large bowel resection, small bowel resection, repair of perforated ulcer, laparotomy and lysis of adhesions were identified in the 2016–2020 National Readmissions Database. Patients undergoing trauma-related operations or procedures ≤2 days of admission were excluded. FTR was defined as in-hospital death following acute kidney injury requiring dialysis (AKI), myocardial infarction, pneumonia, respiratory failure, sepsis, stroke, or thromboembolism. Multilevel mixed-effect models were developed to assess factors linked with FTR. ResultsAmong 826,548 EGS operations satisfying inclusion criteria, 298,062 (36.1 %) developed at least one MAE. Of those experiencing MAE, 43,477 (14.6 %) ultimately did not survive to discharge (FTR). Following adjustment for fixed hospital level effects, only 3.5 % of the variance in FTR was attributable to center-level differences. Relative to private insurance and the highest income quartile, Medicaid insurance (AOR 1.33; 95%CI, 1.23–1.43) and the lowest income quartile (AOR 1.22; 95%CI, 1.17–1.29) were linked with increased odds of FTR.A subset analysis stratified complication-specific rates of FTR by insurance status. Relative to private insurance, Medicaid coverage and uninsured status were linked with greater odds of FTR following perioperative sepsis, pneumonia, and AKI. ConclusionOur findings underscore the need for increased screening and vigilance following perioperative complications to mitigate disparities in patient outcomes following high-risk EGS.

Patient Demographic Factors Impact KOOS JR Response Rates for Total Knee Arthroplasty Patients.

The Knee injury and Osteoarthritis Outcome Score for Joint Replacement (KOOS JR) is a validated patient-reported measure for assessing pain and function following total knee arthroplasty (TKA). This study investigates how patient demographic factors (i.e., age, sex, and race) correlate with KOOS JR response rates. This was a retrospective cohort study of adult, English-speaking patients who underwent primary TKA between 2017 and 2023 at an academic institution. KOOS JR completion status-complete or incomplete-was recorded within 90 days postoperatively. Standard statistical analyses were performed to assess KOOS JR completion against demographic factors. Among 2,883 total patients, 70.2% had complete and 29.8% had incomplete KOOS JR questionnaires. Complete status (all p < 0.01) was associated with patients aged 60 to 79 (71.8%), white race (77.6%), Medicare (81.7%), marriage (76.8%), and the highest income quartile (75.7%). Incomplete status (all p < 0.001) was associated with patients aged 18 to 59 (64.4%), Medicaid (82.4%), and lower income quartiles (41.6% first quartile, 36.8% third quartile). Multiple patient demographic factors may affect KOOS JR completion rates; patients who are older, white, and of higher socioeconomic status are more likely to participate. Addressing underrepresented groups is important to improve the utility and generalizability of the KOOS JR.

Disparities in postpartum readmission by patient- and hospital-level social risk factors in the United States: a retrospective multistate analysis, 2015–2020

BackgroundPostpartum readmission is an area of focus for improving obstetric care and reducing costs. We examined disparities in all-cause 30-day postpartum readmission by patient- and hospital-level factors in the United States. MethodsWe conducted a retrospective cohort study using 2015–2020 records from the State Inpatient Databases from four states. Generalized linear mixed models were constructed to estimate the effects of individual patient- and hospital-level factors on adjusted odds of 30-day readmission after controlling for confounders. Stratified analyses by delivery and anesthesia type (New York only) and interaction models were performed. ResultsBlack mothers were more likely than White mothers to be readmitted within 30-days postpartum (aOR 1.57, 95% CI 1.52 to 1.61). Mothers with public insurance had increased odds of readmission compared with those with private insurance (Medicare: aOR 2.13, 95% CI 1.95 to 2.32; Medicaid: aOR 1.14, 95% CI 1.11 to 1.17). Compared with mothers in the lowest income quartile, those in the highest quartile experienced a 14% lower odds of readmission (aOR 0.86, 95% CI 0.83 to 0.89). There were no significant associations between hospital-level characteristics and readmission. Black mothers were more likely to be readmitted regardless of delivery type and most combinations of delivery and anesthesia type. Black mothers from the highest income quartile were more likely to be readmitted than White mothers from the lowest income quartile. ConclusionSubstantial disparities in 30-day postpartum readmissions by patient-level social factors were observed, particularly amongst Black mothers. Action is needed to address and mitigate disparities in postpartum readmission.

Abstract 6479: Metastases in uveal melanoma patients: Trends and risk factors

Abstract Purpose: Uveal melanoma has a high tendency to metastasize. Due to its rarity, there has not been large population studies that have demonstrated the effect of demographic variables on a patient’s risk to have metastases. Methods: The Nationwide Emergency Department Sample was queried from the last quarter of 2015 to 2019 to identify patients with a diagnosis of uveal melanoma. Multivariable logistic regression, with patient- and hospital-level characteristics as covariates, was used to identify factors associated with a higher chance of developing a metastasis and specific metastasis locations. Results: From the last quarter of 2015 to 2019, there were 7,561 ED encounters with a diagnosis of uveal melanoma. Of these patients, 5.8% had at least one metastasis. Most patients with a metastasis were at least 65 years of age (47.1%), male (54.4%), a Medicare beneficiary (45.2%), and belonged to a family in the highest income quartile (29.7%). The median age of these patients was 61 years (IQR: 32-74). Most patients presented to hospitals in the South (40.7%), with a Trauma Level I designation (56.1%), and to a metropolitan teaching hospital (72.9%). The most common sites of metastasis were liver (17.0%), brain (5.3%), and bone (2.0%). Multivariable logistic regression identified the following factors to be associated with increased risk of developing a metastasis: private insurance (odds ratio [OR]=1.62; p=0.012), highest income quartile (OR=2.30; p&amp;lt;0.001), and 2nd highest income quartile (OR=1.78; p=0.002). The following factors were associated with higher odds of developing a liver metastasis specifically: no-charge/charity work (OR=15.8; p=0.012), highest income quartile (OR=1.99; p=0.003), and second highest income quartile (OR=1.66; p=0.035). Presenting to a Trauma Level I hospital was associated with decreased risk of developing a liver metastasis (OR=0.57; p=0.016). Belonging to the highest income quartile was associated with a higher chance of developing a brain metastasis (OR=2.13; p=0.023) or a bone metastasis (OR=2.74; p=0.045). Among patients with a metastasis, the in-hospital mortality rate was 8.3%. Conclusion: Metastasis is an important complication to monitor in uveal melanoma patients. In this study, we have demonstrated that income and insurance status are factors that are associated with higher rates of metastases. Physicians should place special attention to these groups to ensure that metastases are minimized. Citation Format: Alice A. Beneke, Kamil Taneja, Lauren Ladehoff, Kevin Root, Eric Toloza. Metastases in uveal melanoma patients: Trends and risk factors [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 6479.

Trends in underweight and severe underweight disparities in Korean adults and older adults: a nationwide, repeated cross-sectional study

ObjectivesLittle is known about the disparities in underweight prevalence among the general population in high-income countries. We investigated the trends in underweight prevalence and disparities across sociodemographic groups among Korean adults and older adults. Setting and participantsA series of cross-sectional data on Korean national health checkups for adults aged ≥20 years were analyzed from 2005 to 2016. MeasurementsBased on body mass index (kg/m2), underweight was graded as mild (17.0–18.49), moderate (16.0–16.9), and severe (<16.0). Underweight prevalence was compared across sociodemographic subgroups in 2015–2016. Trends in underweight disparities were examined from 2005–2006 to 2015–2016. Multivariable-adjusted odds ratios (ORs; 95% confidence intervals, CIs) were calculated using logistic regression. ResultsApproximately 11–22 million adults were included in each wave. In 2015–2016, the overall prevalence of underweight was 3.6% (men 2.0%, women 5.2%); severe underweight was 0.2% (men 0.1%, women 0.3%). The prevalence of underweight varied by sex and age groups. In men, those aged ≥80 years had the highest prevalence (overall 7.33%, severe underweight 0.84%). In women, those aged 20–29 years had the highest prevalence of overall underweight (14.57%), whereas those aged ≥80 years had the highest prevalence of severe underweight (1.38%). Compared with individuals in the lowest income quartile, men in the highest income had lower ORs of overall (0.59, 95% CI 0.59–0.60) and severe underweight (0.46, 95% CI 0.44–0.48); women in the highest income quartile had a higher OR of overall (1.12, 95% CI 1.12–1.13) but a lower OR of severe underweight (0.89, 95% CI 0.86–0.92). From 2005–2006 to 2015–2016, severe underweight consistently declined in older men but remained constant in women aged ≥80 years, widening sex disparities among older adults. Severe underweight decreased or leveled off in the highest income quartile but steadily increased in the lowest quartile, worsening income disparities. ConclusionIn this nationwide study, underweight was more prevalent among women, older adults aged ≥80 years, and low-income individuals. Disparities in severe underweight widened across sociodemographic subgroups over time.

Transient ischemic attack and pregnancy, delivery and neonatal outcomes-An evaluation of a population database.

Transient ischemic attack (TIA) is rare in women of reproductive age. We aimed to compare perinatal outcomes between women who suffered from a TIA to those who did not. A retrospective population-based cohort study utilizing the Healthcare Cost and Utilization Project, Nationwide Inpatient Sample (HCUP-NIS). All women who delivered or had a maternal death in the US (2004-2014) were included in the study. Pregnancy, delivery, and neonatal outcomes were compared between women with an ICD-9 diagnosis of a TIA to those without. Overall, 9 096 788 women met the inclusion criteria. Of these, 203 women (2.2/100000) had a TIA (either before or during pregnancy). Women with TIA, compared to those without, were more likely to be older than 35 years of age, white, in the highest income quartile, be insured by private insurance and suffer from obesity and chronic hypertension. Patients in the TIA group, compared to those without, had a higher rate of pregnancy-induced hypertension (aOR 2.5, 95% CI: 1.55-4.05, P < 0.001), pre-eclampsia (aOR 3.77, 95% CI: 2.15-6.62, P < 0.001), eclampsia (aOR 28.05, 95% CI: 6.91-113.95, P < 0.001), preterm delivery (aOR 1.78, 95% CI: 1.03-3.07, P = 0.039), and maternal complications such as deep vein thrombosis (aOR 33.3, 95% CI: 8.07-137.42, P < 0.001). Regarding neonatal outcomes, patients with a TIA, compared to those without, had a higher rate of congenital anomalies (aOR 7.04, 95% CI: 2.86-17.32, P < 0.001). Women with a TIA diagnosis before or during pregnancy had a higher rate of maternal complications, including hypertensive disorders of pregnancy and venous thromboembolism, as well as an increased risk of congenital anomalies.

Association between sociodemographic factors and diagnosis of lethal prostate cancer in early life

ObjectiveA subset of patients are diagnosed with lethal prostate cancer (CaP) early in life before prostate-specific antigen (PSA) screening is typically initiated. To identify opportunities for improved detection, we evaluated patient sociodemographic factors associated with advanced vs. localized (CaP) diagnosis across the age spectrum. MethodsWe conducted a retrospective cohort study using the National Cancer Database, identifying patients diagnosed with CaP from 2004 to 2020. We compared characteristics of patients diagnosed at the advanced (cN1 or M1) versus localized (cT1-4N0M0) stage. Using multivariable logistic regression, we evaluated the associations among patient clinical and sociodemographic factors and advanced diagnosis, stratifying patients by age as ≤55 (before screening is recommended for most patients), 56 to 65, 66 to 75, and ≥76 years. ResultsWe identified 977,722 patients who met the inclusion criteria. The mean age at diagnosis was 65.3 years and 50,663 (5.1%) had advanced disease. Overall, uninsured (OR = 3.20, 95% CI 3.03–3.78) and Medicaid-insured (OR 2.58, 95% CI 2.48–2.69) vs. privately insured status was associated with higher odds of diagnosis with advanced disease and this effect was more pronounced for younger patients. Among patients ≤55 years, uninsured (OR 4.14, 95% CI 3.69–4.65) and Medicaid-insured (OR 3.39, 95% CI 3.10–3.72) vs. privately insured patients were associated with higher odds of advanced cancer at diagnosis. Similarly, residence in the lowest vs. highest income quartile was associated with increased odds of advanced CaP in patients ≤55 years (OR 1.15, 95% CI 1.02–1.30). Black vs. White race was associated with increased odds of advanced CaP at diagnosis later in life (OR 1.17, 95% CI 1.09–1.25); however, race was not significantly associated with advanced stage CaP in those ≤55 years (P = 0.635). ConclusionsSociodemographic disparities in diagnosis at advanced stages of CaP were more pronounced in younger patients, particularly with respect to insurance status. These findings may support greater attention to differential use of early CaP screening based on patient health insurance.

Despite multi-disciplinary team discussions the socioeconomic disparities persist in the oncological treatment of non-metastasized colorectal cancer

BackgroundThe introduction of national guidelines should eliminate previously observed associations between socioeconomic status (SES) and colorectal cancer treatment. The aim of the study was to investigate whether inequalities remain. MethodsCRCBaSe, a register-linkage originating from the Swedish Colorectal Cancer Registry, was used to identify information on patient and tumour characteristics, for 83,460 patients with stage I-III disease diagnosed 2008–2021. SES was measured as disposable income (quartiles) and the highest level of education. Outcomes of interest were emergency surgery, multidisciplinary team (MDT) conference discussion, and oncological treatment. Differences in treatment between SES groups were explored using multivariable logistic regression adjusted for year of diagnosis, age at diagnosis, sex, civil status, comorbidities, tumour location and stage. ResultsPatients in the highest income quartile had a lower risk of emergency surgery (OR 0.73 95%CI 0.68–0.80), a higher chance of being discussed at the preoperative (OR 1.39 95%CI 1.28–1.51) and postoperative MDT (OR 1.41 95%CI 1.30–1.53), receiving neoadjuvant (OR 1.15 95%CI 1.06–1.25) and adjuvant treatment (OR 2.04 95%CI 1.88–2.20). Higher education level increased the odds of MDT discussion but was not associated with oncological treatment. The proportion of patients discussed at the MDT increased, with almost all patients discussed since 2016. Despite this, treatment differences remained when patients diagnosed since 2016 were analysed separately. ConclusionThere were significant differences in how patients with different SES were treated for colorectal cancer. Further action is required to investigate the drivers of these differences as well as their impact on mortality and, ultimately, eliminate the inequalities.