Disparities in Socioeconomic Factors Mediate the Impact of Racial Segregation Among Patients With Hepatopancreaticobiliary Cancer

Association of Racial and Economic Privilege on Postoperative Outcomes Among Medicare Beneficiaries

INTRODUCTION

Social determinants of health can play an important role in patient health. Privilege is a right, benefit, advantage, or opportunity that can positively affect all social determinants of health. We sought to assess variations in the prevalence of privilege among patient populations and define the association of privilege on postoperative surgical outcomes.

METHODS

Medicare beneficiaries who underwent elective coronary artery bypass grafting, abdominal aortic aneurysm repair, total hip arthroplasty, total knee arthroplasty, colectomy, and lung resection were identified. The Index of Concentration of Extremes (ICE), a validated metric of both social spatial polarization and privilege was calculated and merged with county-level data obtained from the American Community Survey. Textbook outcome (TO) was defined as absence of postoperative complications, extended length of stay, 90-day mortality, and 90-day readmission. Multivariable regression analysis was performed to assess the relationship between ICE and TO.

RESULTS

Among 1,885,889 Medicare beneficiaries who met inclusion criteria, 655,980 (34.8%) individuals resided in areas with the highest privilege (i.e., White, high-income homogeneity), whereas 221,314 (11.7%) individuals resided in areas of the lowest privilege (i.e., Black, low-income homogeneity). The overall incidence of TO was 66.2% (n = 1,247,558). On multivariable regression, residence in the most advantaged neighbourhoods was associated with a lower chance of surgical complications (odds ratio [OR] 0.90, 95% confidence interval [CI] 0.88-0.91), a prolonged length of stay (OR 0.81, 95% CI 0.79-82), 90-day readmission (OR 0.94, 95% CI 0.92-0.95), and 90-day mortality (OR 0.71, 95% CI 0.68-0.74) (all P < 0.001). Residence in the most privileged areas was associated with 19% increased odds of achieving TO (OR 1.19, 95% CI 1.18-1.21), as well as a 6% reduction in Medicare expenditures versus individuals in the least privileged counties (OR 0.94, 95% CI 0.94-0.94) (both P < 0.001).

CONCLUSIONS

Privilege, based on the ICE joint measure of racial/ethnic and economic spatial concentration, was strongly associated with the likelihood to achieve an "optimal" TO following surgery. As healthcare is a basic human right, privilege should not be associated with disparities in surgical care.

Association Between Historical Redlining and Access to High-Volume Hospitals Among Patients Undergoing Complex Cancer Surgery in California

BACKGROUND

We sought to determine the impact of historical redlining on travel patterns and utilization of high-volume hospitals (HVHs) among patients undergoing complex cancer operations.

METHODS

The California Department of Health Care Access and Information database was utilized to identify patients who underwent esophagectomy (ES), pneumonectomy (PN), pancreatectomy (PA), or proctectomy (PR) for cancer between 2010 and 2020. Patient ZIP codes were assigned Home Owners' Loan Corporation grades (A: 'Best'; B: 'Still Desirable'; C: 'Definitely Declining'; and D: 'Hazardous/Redlined'). A clustered multivariable regression was used to assess the likelihood of patients undergoing surgery at an HVH, bypassing the nearest HVH, and total real driving time and travel distance.

RESULTS

Among 14,944 patients undergoing high-risk cancer surgery (ES: 4.7%, n = 1216; PN: 57.8%, n = 8643; PD: 14.4%, n = 2154; PR: 23.1%, n = 3452), 782 (5.2%) individuals resided in the 'Best', whereas 3393 (22.7%) individuals resided in redlined areas. Median travel distance was 7.8 miles (interquartile range [IQR] 4.1-14.4) and travel time was 16.1 min (IQR 10.7-25.8). Overall, 10,763 (ES: 17.4%; PN: 76.0%; PA: 63.5%; PR: 78.4%) patients underwent surgery at an HVH. On multivariable regression, patients residing in redlined areas were less likely to undergo surgery at an HVH (odds ratio [OR] 0.67, 95% confidence interval [CI] 0.54-0.82) and were more likely to bypass the nearest hospital (OR 1.80, 95% CI 1.44-2.46). Notably, Medicaid insurance, minority status, limited English-language proficiency, and educational level mediated the disparities in access to HVH.

CONCLUSION

Surgical disparities in access to HVH among patients from historically redlined areas are largely mediated by social determinants such as insurance and minority status.

Association of Neighborhood Deprivation and Transplant Center Quality with Liver Transplantation Outcomes

BACKGROUND

Social determinants of health can impact the quality of liver transplantation (LT) care. We sought to assess whether the association between neighborhood deprivation and transplant outcomes can be mitigated by receiving care at high-quality transplant centers.

STUDY DESIGN

In this population-based cohort study, patients who underwent LT between 2004 and 2019 were identified in the Scientific Registry of Transplant Recipients. LT-recipient neighborhoods were identified at the county level and stratified into quintiles relative to Area Deprivation Index (ADI). Transplant center quality was based on the Scientific Registry of Transplant Recipients 5-tier ranking using standardized transplant rate ratios. Multivariable Cox regression was used to assess the relationship between ADI, hospital quality, and posttransplant survival.

RESULTS

A total of 41,333 recipients (median age, 57.0 [50.0 to 63.0] years; 27,112 [65.4%] male) met inclusion criteria. Patients residing in the most deprived areas were more likely to have nonalcoholic steatohepatitis, be Black, and travel further distances to reach a transplant center. On multivariable analysis, post-LT long-term mortality was associated with low- vs high-quality transplant centers (hazard ratio [HR] 1.19, 95% CI 1.07 to 1.32), as well as among patients residing in high- vs low-ADI neighborhoods (HR 1.25, 95% CI 1.16 to 1.34; both p ≤ 0.001). Of note, individuals residing in high- vs low-ADI neighborhoods had a higher risk of long-term mortality after treatment at a low-quality (HR 1.31, 95% CI 1.06 to 1.62, p = 0.011) vs high-quality (HR 1.12, 95% CI 0.83 to 1.52, p = 0.471) LT center.

CONCLUSIONS

LT at high-quality centers may be able to mitigate the association between posttransplant survival and neighborhood deprivation. Investments and initiatives that increase access to referrals to high-quality centers for patients residing in higher deprivation may lead to better outcomes and help mitigate disparities in LT.

Mediators of racial disparities in postoperative outcomes among patients undergoing complex surgery

BACKGROUND

This study sought to quantify the direct and indirect effects of race on postoperative outcomes after complex surgery.

METHODS

Medicare patients who underwent abdominal aortic aneurysm (AAA) repair, coronary artery bypass grafting (CABG), lung resection or colectomy were identified (2014-2018). Generalized structural equation modelling was utilized to quantify the direct and indirect effects of race on Textbook outcome (TO).

RESULTS

Among 930,033 patients, 46.8% of patients achieved a TO, with Black patients less likely to achieve a TO (referent: White; Black: OR 0.72, 95% CI 0.70-0.73). Notably, 32.3% of the disparities in TO were attributable to race itself, while 67.7% was explained by other factors. Specifically, residential segregation accounted for 39.4% of the lower TO rates among Black patients, while 21.0% was attributable to a high comorbidity burden.

CONCLUSIONS

These data highlight the need to target structural racism as a policy priority to promote a more equitable healthcare system.

Importance of Diversity, Equity, and Inclusion in the Hepatopancreatobiliary Workforce

Diversity is a catalyst for progress that prevents institutional stagnation and, by extension, averts descent to mediocrity. This review focuses on the available data concerning hepatopancreatobiliary (HPB) surgical workforce demographics and identifies evidence-based strategies that may enhance justice, equity, diversity, and inclusion for HPB surgeons and their patients. We report that the current United States HPB surgical workforce does not reflect the population it serves. We review data describing disparity-perpetuating hurdles confronting physicians from minority groups underrepresented in medicine at each stage of training. We further examine evidence showing widespread racial and socioeconomic disparities in HPB surgical care and review the effects of workforce diversity and physician-patient demographic concordance on healthcare outcomes. Evidence-based mitigators of structural racism and segregation are reviewed, including tailored interventions that can address social determinants of health toward the achievement of true excellence in HPB surgical care. Lastly, select evidence-based data driving surgical workforce solutions are reviewed, including intentional compensation plans, mentorship, and sponsorship.

Association of Race/Ethnicity, Persistent Poverty, and Opioid Access Among Patients with Gastrointestinal Cancer Near the End of Life

BACKGROUND

Social determinants of health (SDoH) can impact access to healthcare. We sought to assess the association between persistent poverty (PP), race/ethnicity, and opioid access among patients with gastrointestinal cancer near the end-of-life (EOL).

METHODS

SEER-Medicare patients with gastric, liver, pancreatic, biliary, colon, and rectal cancer were identified between 2008 and 2016 near EOL, defined as 30 days before death or hospice enrolment. Data were linked with county-level poverty from the American Community Survey and the US Department of Agriculture (2000-2015). Counties were categorized as never high-poverty (NHP), intermittent high-poverty (IHP) and persistent poverty (PP). Trends in opioid prescription fills and daily dosages (morphine milligram equivalents per day) were examined.

RESULTS

Among 48,631 Medicare beneficiaries (liver: n = 6551, 13.5%; pancreas: n = 13,559, 27.9%; gastric: n = 5486, 1.3%; colorectal: n = 23,035, 47.4%), there was a steady decrease in opioid prescriptions near EOL. Black, Asian, Hispanic, and other racial groups had markedly decreased odds of filling an opioid prescription near EOL (Black: OR 0.84, 95% CI 0.79-0.90; Asian: OR 0.86, 95% CI 0.79-0.94; Hispanic: OR 0.90, 95% CI 0.84-0.95; Other: OR 0.83, 95% CI 0.74-0.93; all p < 0.05). Even after filling an opioid prescription, this subset of patients received lower daily doses versus White patients (Black: -16.5 percentage points, 95% CI -21.2 to -11.6; Asian: -11.9 percentage points, 95% CI -18.5 to -4.9; Hispanic: -19.1 percentage points, 95%CI -23.5 to -14.6; all p < 0.05). The disparity in opioid access and average daily doses among was attenuated in IHP/PP areas for Asian, Hispanic, and other racial groups, yet exacerbated among Black patients.

CONCLUSIONS

Race/ethnicity-based disparities in EOL pain management persist with SDoH-based variations in EOL opioid use. In particular, PP impacted EOL opioid access and utilization.

Factors Associated with Total Laryngectomy Utilization in Patients with cT4a Laryngeal Cancer

BACKGROUND

Despite recommendations for upfront total laryngectomy (TL), many patients with cT4a laryngeal cancer (LC) instead undergo definitive chemoradiation, which is associated with inferior survival. Sociodemographic and oncologic characteristics associated with TL utilization in this population are understudied.

METHODS

This retrospective cohort study utilized hospital registry data from the National Cancer Database to analyze patients diagnosed with cT4a LC from 2004 to 2017. Patients were stratified by receipt of TL, and patient and facility characteristics were compared between the two groups. Logistic regression analyses and Cox proportional hazards methodology were performed to determine variables associated with receipt of TL and with overall survival (OS), respectively. OS was estimated using the Kaplan-Meier method and compared between treatment groups using log-rank testing. TL usage over time was assessed.

RESULTS

There were 11,149 patients identified. TL utilization increased from 36% in 2004 to 55% in 2017. Treatment at an academic/research program (OR 3.06) or integrated network cancer program (OR 1.50), male sex (OR 1.19), and Medicaid insurance (OR 1.31) were associated with increased likelihood of undergoing TL on multivariate analysis (MVA), whereas age > 61 (OR 0.81), Charlson-Deyo comorbidity score ≥ 3 (OR 0.74), and clinically positive regional nodes (OR 0.78 [cN1], OR 0.67 [cN2], OR 0.21 [cN3]) were associated with decreased likelihood. Those undergoing TL with post-operative radiotherapy (+/- chemotherapy) had better survival than those receiving chemoradiation (median OS 121 vs. 97 months; p = 0.003), and TL + PORT was associated with lower risk of death compared to chemoradiation on MVA (HR 0.72; p = 0.024).

CONCLUSIONS

Usage of TL for cT4a LC is increasing over time but remains below 60%. Patients seeking care at academic/research centers are significantly more likely to undergo TL, highlighting the importance of decreasing barriers to accessing these centers. Increased focus should be placed on understanding and addressing the additional patient-, physician-, and system-level factors that lead to decreased utilization of surgery.

Association between the Environmental Quality Index and Textbook Outcomes Among Medicare Beneficiaries Undergoing Surgery for Early-Stage Pancreatic Adenocarcinoma

BACKGROUND

Access to high-quality cancer care is affected by environmental exposures and structural inequities. This study sought to investigate the association between the environmental quality index (EQI) and achievement of textbook outcomes (TO) among Medicare beneficiaries over the age of 65 who underwent surgical resection for early-stage pancreatic adenocarcinoma (PDAC).

METHODS

Patients diagnosed with early-stage PDAC from 2004 to 2015 were identified using the SEER-Medicare database and combined with the US Environmental Protection Agency's EQI data. High EQI category indicated poor environmental quality, whereas low EQI indicated better environmental conditions.

RESULTS

A total of 5,310 patients were included, of which 45.0% (n = 2,387) patients achieved TO. Median age was 73 years and more than half were female (n = 2,807, 52.9%), married (n = 3,280, 61.8%), and resided in the Western region of the US (n = 2,712, 51.1%). On multivariable analysis, patients residing in moderate and high EQI counties were less likely to achieve a TO (referent: low EQI; moderate EQI: OR 0.66, 95% CI 0.46-0.95; high EQI: OR 0.65, 95% CI 0.45-0.94; p < 0.05). Increasing age (OR 0.98, 95%CI 0.97-0.99), racial minorities (OR 0.73, 95% CI 0.63-0.85), having a Charlson co-morbidity index > 2 (OR 0.54, 95%CI 0.47-0.61) and stage II disease (OR 0.82, 95%CI 0.71-0.96) were also associated with not achieving a TO (all p < 0.001).

CONCLUSION

Older Medicare patients residing in moderate or high EQI counties were less likely to achieve an "optimal" TO after surgery. These results demonstrate that environmental factors may drive post-operative outcomes among patients with PDAC.

Impact of Food Insecurity on Outcomes Following Resection of Hepatopancreaticobiliary Cancer

INTRODUCTION

Food insecurity (FI) may predispose individuals to suboptimal nutrition, leading to chronic disease and poor health outcomes. We sought to assess the impact of county-level FI on postoperative outcomes among patients undergoing resection of hepatopancreaticobiliary (HPB) cancer.

METHODS

Patients who were diagnosed with HPB cancer between 2010 and 2015 were identified from the Surveillance, Epidemiology, and End Results (SEER)-Medicare database. Data on annual county-level FI were obtained from the Feeding America: Mapping the Meal Gap report and were categorized into tertiles. Textbook outcome was defined as no extended length of stay, perioperative complications, 90-day readmission, and 90-day mortality. Multiple logistic regression and Cox regression models were used to assess outcomes and survival relative to FI.

RESULTS

Among 49,882 patients (hepatocellular: n = 11,937, 23.9%; intrahepatic cholangiocarcinoma: n = 2111, 4.2%; extrahepatic cholangiocarcinoma: n = 4047, 8.1%; gallbladder: n = 2853, 5.7%; pancreatic: n = 28,934, 58.0%), 6702 (13.4%) patients underwent a surgical resection. Median age was 75 years (interquartile range 69-82), and most patients were male (n = 25,767, 51.7%) and self-identified as White (n = 36,381, 72.9%). Overall, 5291 (10.6%) and 39,664 (79.5%) individuals resided in low or moderate FI counties, respectively, while 4927 (9.8%) patients resided in high FI counties. Achievement of textbook outcome (TO) was 56.3% (n = 6702). After adjusting for competing risk factors, patients residing in high FI counties had lower odds to achieve a TO versus individuals living in low FI counties (odds ratio 0.69, 95% confidence interval [CI] 0.54-0.88, p = 0.003). In addition, patients residing in moderate and high FI counties had a greater risk of mortality at 1- (referent, low, moderate: hazard ratio [HR] 1.09, 95% CI 1.05-1.14; high: HR 1.14, 95% CI 1.08-1.21), 3- (referent, low, moderate: HR 1.09, 95% CI 1.05-1.14; high: HR 1.14, 95% CI 1.08-1.21), and 5- (referent, low, moderate: HR 1.05, 95% CI 1.01-1.09; high: HR 1.07, 95% CI 1.02-1.13) years versus individuals from low FI counties.

CONCLUSIONS

FI was associated with adverse perioperative outcomes and long-term survival following resection of an HPB malignancy. Interventions directed towards mitigating nutritional inequities are needed to improve outcomes among vulnerable HPB populations.