Cancer Health Disparities Affecting Glioblastoma Survival in Ontario, Canada: A Population-Based Study.

IF 8.5 1区 医学 Q1 CLINICAL NEUROLOGY
Neurology Pub Date : 2025-07-08 Epub Date: 2025-06-09 DOI:10.1212/WNL.0000000000213742
Abdelsimar T Omar, Jose Danilo Bengzon Diestro, Vivian Aghanya, Anna J Dare, Julian Spears, David Gomez
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引用次数: 0

Abstract

Background and objectives: The role of cancer health disparities in a non-screen-detectable, high-mortality cancer such as glioblastoma (GBM) remains uncertain. We investigated the association between socioeconomic factors and overall survivorship and receipt of adjuvant treatment among patients with GBM.

Methods: This population-based cohort study used linked provincial administrative databases in Ontario, Canada, and was conducted among adult patients with GBM who underwent surgery from 2006 to 2022. Our exposures were neighborhood-based material deprivation index, immigration status, and residence rurality index. The primary outcomes were overall survival (OS) and receipt of adjuvant treatment within 6 months. Secondary outcomes were cancer-specific survival (CSS) and the number of emergency department visits in the year preceding surgery, used as a proxy for potential management delay. Kaplan-Meier survival analysis and multivariable Cox proportional hazard models were used to assess OS and CSS while logistic regression and Poisson regression were applied for receipt of adjuvant treatment and emergency department visits, respectively.

Results: Among 7,232 patients included in the cohort, patients residing in the most deprived neighborhoods had worse overall survival (median: 228 days vs 294 days, adjusted hazard ratio [aHR] 1.167, 95% CI 1.078-1.229, p < 0.001) and cancer-specific survival (aHR: 1.216, 95% CI 1.112-1.329, p < 0.001) compared with patients in least deprived areas. They also had 26% decreased adjusted odds of receiving adjuvant treatment (77.9% vs 83.0% in the most vs least deprived neighborhoods; adjusted odds ratio [aOR]: 0.741, 95% CI 0.608-0.902, p = 0.003) compared with patients in least deprived neighborhoods. Immigration status was significantly associated with OS and CSS, shown to be longer among remote immigrants (aHR for OS: 0.875, 95% CI 0.794-0.964, p = 0.007; aHR for CSS: 0.816, 95% CI 0.730-0.912, p < 0.001) and recent immigrants (aHR for OS: 0.746 95% CI 0.566-0.982, p = 0.037; aHR for CSS: 0.705, 95% CI 0.517-0.961, p = 0.027) compared with nonimmigrants. Higher material resource dimension index (p = 0.015) and rural residence (p < 0.001) were also associated with more ED visits before surgery.

Discussion: These findings suggest that cancer health disparities persist for GBM in Ontario, Canada, despite a single-payer, publicly financed system that guarantees universal health coverage of cancer services. This highlights the need for targeted interventions to address disparities and improve outcomes in marginalized populations.

加拿大安大略省癌症健康差异影响胶质母细胞瘤生存:一项基于人群的研究
背景和目的:癌症健康差异在非筛查可检测的高死亡率癌症(如胶质母细胞瘤(GBM))中的作用仍不确定。我们调查了社会经济因素与GBM患者总体生存率和接受辅助治疗之间的关系。方法:这项基于人群的队列研究使用了加拿大安大略省相关的省级行政数据库,并在2006年至2022年接受手术的成年GBM患者中进行了研究。我们的暴露是基于社区的物质剥夺指数、移民身份和居住农村指数。主要结局是总生存期(OS)和6个月内接受辅助治疗。次要结局是癌症特异性生存(CSS)和手术前一年急诊科就诊次数,用作潜在管理延迟的代理。采用Kaplan-Meier生存分析和多变量Cox比例风险模型评估OS和CSS,分别采用logistic回归和泊松回归评估接受辅助治疗和急诊就诊情况。结果:在纳入队列的7232例患者中,生活在最贫困社区的患者的总生存期(中位数:228天vs 294天,校正风险比[aHR] 1.167, 95% CI 1.078-1.229, p < 0.001)和癌症特异性生存期(aHR: 1.216, 95% CI 1.112-1.329, p < 0.001)比生活在最贫困地区的患者更差。他们接受辅助治疗的调整几率也降低了26%(最贫困社区77.9%对83.0%);校正优势比[aOR]: 0.741, 95% CI 0.608-0.902, p = 0.003)。移民身份与OS和CSS显著相关,在偏远地区移民中表现为更长(OS的aHR: 0.875, 95% CI 0.794-0.964, p = 0.007;CSS的aHR: 0.816, 95% CI 0.730-0.912, p < 0.001)和近期移民(OS的aHR: 0.746, 95% CI 0.566-0.982, p = 0.037;CSS的aHR为0.705,95% CI为0.517-0.961,p = 0.027)。较高的物质资源维度指数(p = 0.015)和农村居住(p < 0.001)与术前急诊次数也相关。讨论:这些发现表明,在加拿大安大略省,尽管有一个单一付款人的公共资助系统,保证了癌症服务的全民健康覆盖,但GBM的癌症健康差距仍然存在。这突出表明,有必要采取有针对性的干预措施,以解决边缘化人群的差距和改善结果。
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来源期刊
Neurology
Neurology 医学-临床神经学
CiteScore
12.20
自引率
4.00%
发文量
1973
审稿时长
2-3 weeks
期刊介绍: Neurology, the official journal of the American Academy of Neurology, aspires to be the premier peer-reviewed journal for clinical neurology research. Its mission is to publish exceptional peer-reviewed original research articles, editorials, and reviews to improve patient care, education, clinical research, and professionalism in neurology. As the leading clinical neurology journal worldwide, Neurology targets physicians specializing in nervous system diseases and conditions. It aims to advance the field by presenting new basic and clinical research that influences neurological practice. The journal is a leading source of cutting-edge, peer-reviewed information for the neurology community worldwide. Editorial content includes Research, Clinical/Scientific Notes, Views, Historical Neurology, NeuroImages, Humanities, Letters, and position papers from the American Academy of Neurology. The online version is considered the definitive version, encompassing all available content. Neurology is indexed in prestigious databases such as MEDLINE/PubMed, Embase, Scopus, Biological Abstracts®, PsycINFO®, Current Contents®, Web of Science®, CrossRef, and Google Scholar.
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