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Yee EK, Coburn NG, Zuk V, Davis LE, Mahar AL, Liu Y, Gupta V, Darling G, Hallet J. Geographic impact on access to care and survival for non-curative esophagogastric cancer: a population-based study. Gastric Cancer 2021; 24:790-799. [PMID: 33550518 DOI: 10.1007/s10120-021-01157-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 01/06/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Among patients not undergoing curative-intent therapy for esophagogastric cancer, access to care may vary. We examined the geographic distribution of care delivery and survival and their relationship with distance to cancer centres for non-curative esophagogastric cancer, hypothesising that patients living further from cancer centres have worse outcomes. METHODS We conducted a population-based analysis of adults with non-curative esophagogastric cancer from 2005 to 2017 using linked administrative healthcare datasets in Ontario, Canada. Outcomes were medical oncology consultation, receipt of chemotherapy, and overall survival. Using geographic information system analysis, we mapped locations of cancer centres and outcomes across census divisions. Bivariate choropleth maps identified regional outcome discordances. Multivariable regression models assessed the relationship between distance from patient residence to the nearest cancer centre and outcomes, adjusting for demographic, clinical, and socioeconomic factors. RESULTS Of 10,228 patients surviving a median 5.1 months (IQR: 2.0-12.0), 68.5% had medical oncology consultation and 32.2% received chemotherapy. Certain distances (reference ≤ 10 km) were associated with lower consultation [relative risk 0.79 (95% CI 0.63-0.97) for ≥ 101 km], chemotherapy receipt [relative risk 0.67 (95% CI 0.53-0.85) for ≥ 101 km], and overall survival [hazard ratio 1.07 (95% CI 1.02-1.13) for 11-50 km, hazard ratio 1.13 (95% CI 1.04-1.23) for 51-100 km]. CONCLUSION A third of patients did not see medical oncology and most did not receive chemotherapy. Outcomes exhibited high geographic variability. Location of residence influenced outcomes, with inferior outcomes at certain distances > 10 km from cancer centres. These findings are important for designing interventions to reduce access disparities for non-curative esophagogastric cancer care.
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Affiliation(s)
- Elliott K Yee
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada.,Cancer Program, Evaluative Clinical Sciences, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Natalie G Coburn
- Cancer Program, Evaluative Clinical Sciences, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada.,Department of Surgery, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.,Department of Surgery, University of Toronto, Toronto, ON, Canada.,ICES, Toronto, ON, Canada
| | - Victoria Zuk
- Cancer Program, Evaluative Clinical Sciences, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Laura E Davis
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
| | - Alyson L Mahar
- Department of Community Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Ying Liu
- Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Vaibhav Gupta
- Cancer Program, Evaluative Clinical Sciences, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada.,Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Gail Darling
- Department of Surgery, University of Toronto, Toronto, ON, Canada.,Cancer Clinical Research Unit, Princess Margaret Cancer Centre, Toronto, ON, Canada.,Toronto General Hospital Research Institute, Toronto General Hospital, Toronto, ON, Canada
| | - Julie Hallet
- Cancer Program, Evaluative Clinical Sciences, Sunnybrook Research Institute, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada. .,Department of Surgery, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada. .,Department of Surgery, University of Toronto, Toronto, ON, Canada. .,ICES, Toronto, ON, Canada.
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