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Treatment at a high-volume academic research program mitigates racial disparities in pancreatic adenocarcinoma
Quyen D Chu1, Mei-Chin Hsieh2, John F Gibbs3
1Department of Surgery, LSU Health Sciences Center-Shreveport, Shreveport, LA, USA.
Background:
Racial disparities have long been a subject of concern between patients afflicted with pancreatic cancer in the United States. We believe that, in addition to a high-volume center, treatment at an academic research program (ARP) will mitigate racial outcome disparities.
Methods:
A total of 12,950 patients diagnosed with stage I-III pancreatic adenocarcinoma from 2003-2011 and at ACS Commission on Cancer (COC) accredited facilities [e.g., high-volume (≥12 cases/year) ARPs] were evaluated from the National Cancer Data Base (NCDB). Sociodemographic, clinicopathological, and treatment variables were compared between Black (N=1,127) and White (N=11,823) patients. The Kaplan-Meier Estimator and Cox Proportional Hazards Model were used for survival analysis. P value ≤0.05 was considered significant.
Results:
Black patients had a significantly higher overall survival (OS) than White patients, despite having a significantly lower household income, lower education level, more stage III disease, more Medicaid recipients, and higher comorbidity index (P<0.05). The 5-year unadjusted OS (28.6% versus 23.9%, a median survival time (months) was (25.2 versus 23.7 months for Black and White patients, respectively (P<0.05). There was no significant difference in surgical margin status or receipt of chemoradiation between the two cohorts. After adjusting for covariates, race was no longer a significant predictor of OS (P=0.096).
Conclusions:
Treatment at a high volume, ARP can mitigate racial disparities in pancreatic cancer.
