Identifying Disparities in Care in Treating Glioblastoma: A Retrospective Cohort Study of Patients Treated at a Safety-net Versus Private Hospital Setting

World Neurosurg. 2020 May:137:e213-e220. doi: 10.1016/j.wneu.2020.01.133. Epub 2020 Jan 27.

Abstract

Background: Patients of lower socioeconomic status (SES) may experience barriers to their oncologic care, but current data conflict over whether SES affects the prognosis of patients with glioblastoma (GB).

Objective: We sought to determine whether SES disparities impaired delivery of neuro-oncologic care and affected the prognosis of GB patients.

Methods: The records of GB patients treated from 2010 to 2014 at a safety-net hospital (SNH) or private hospital (PH), both served by 1 academic medical institution, were retrospectively reviewed and compared. Overall survival (OS) and progression-free survival (PFS) were estimated using the Kaplan-Meier method.

Results: A total of 55 SNH and 39 PH GB patients were analyzed with median 11-month follow-up. SNH patients were predominantly Hispanic, low income, enrolled in Medicaid, were less likely to receive radiation (89% vs. 100%), took longer to start radiation (41 vs. 29 days), and were less likely to complete radiation treatment (80% vs. 95%). Concurrent and adjuvant temozolomide use were also lower (85% vs. 94% and 60% vs. 71%, respectively). OS and PFS were not significantly different (15 vs. 16 months and 8 vs. 11 months, respectively). On multivariate analysis, adjuvant chemotherapy and RT completion predicted for better OS, whereas hospital type, income, and insurance did not.

Conclusion: Although GB patients at our SNH received less adjuvant treatment compared with PH, outcomes were similar. Access to multidisciplinary care staffed by academic physicians may play an important role in overcoming socioeconomic barriers to treatment availability and quality at SNHs.

Keywords: Disparities; Glioblastoma; Outcomes.

Publication types

  • Comparative Study

MeSH terms

  • Aged
  • Antineoplastic Agents, Alkylating / therapeutic use*
  • Brain Neoplasms / genetics
  • Brain Neoplasms / pathology
  • Brain Neoplasms / therapy*
  • Chemoradiotherapy, Adjuvant / statistics & numerical data
  • Chemotherapy, Adjuvant / statistics & numerical data
  • Cohort Studies
  • DNA Modification Methylases / genetics
  • DNA Repair Enzymes / genetics
  • Ethnicity / statistics & numerical data
  • Female
  • Glioblastoma / genetics
  • Glioblastoma / pathology
  • Glioblastoma / therapy*
  • Healthcare Disparities / statistics & numerical data*
  • Hospitals, Private*
  • Humans
  • Isocitrate Dehydrogenase / genetics
  • Kaplan-Meier Estimate
  • Male
  • Medicaid
  • Middle Aged
  • Neurosurgical Procedures*
  • Poverty / statistics & numerical data
  • Progression-Free Survival
  • Radiotherapy, Adjuvant / statistics & numerical data
  • Retrospective Studies
  • Safety-net Providers*
  • Social Class
  • Standard of Care
  • Survival Rate
  • Temozolomide / therapeutic use*
  • Time-to-Treatment / statistics & numerical data*
  • Tumor Burden
  • Tumor Suppressor Proteins / genetics
  • United States

Substances

  • Antineoplastic Agents, Alkylating
  • Tumor Suppressor Proteins
  • Isocitrate Dehydrogenase
  • DNA Modification Methylases
  • MGMT protein, human
  • DNA Repair Enzymes
  • Temozolomide