Canadian Cancer Registry

Canadian Cancer Registry
Name	Canadian Cancer Registry
Formation	1992
Headquarters	Ottawa, Ontario
Region served	Canada
Parent organization	Public Health Agency of Canada

Canadian Cancer Registry is a national population-based surveillance system that compiles information on incident cancer cases diagnosed among residents of Canada. It functions as a central resource for epidemiological analysis, public health planning, and research supporting agencies such as the Public Health Agency of Canada, provincial ministries like Ontario Ministry of Health, and international bodies including the World Health Organization and the International Agency for Research on Cancer. The Registry interfaces with provincial and territorial cancer registries, hospitals such as Princess Margaret Cancer Centre, and research institutions like the Canadian Cancer Society and the University of Toronto.

History

The Registry emerged from earlier provincial efforts and national initiatives influenced by models such as the Surveillance, Epidemiology, and End Results Program and the North American Association of Central Cancer Registries. Early Canadian cancer surveillance activity involved the Quebec Cancer Registry and the British Columbia Cancer Agency before coordination led to a standardized national database in the late 20th century. Federal legislation and policy frameworks from bodies including the Health Canada and agreements with provinces such as Quebec and Ontario formalized reporting requirements. Influential reports and reviews by experts affiliated with the Canadian Institutes of Health Research, institutes like the National Cancer Institute (United States), and commissions shaped data standards and prompted updates aligned with classifications from the International Classification of Diseases.

Organization and Governance

Governance involves collaboration among federal entities like the Public Health Agency of Canada, provincial and territorial ministries such as the Alberta Health Services, and agencies including the Canadian Institute for Health Information. Operational oversight often relies on partnerships with academic centres such as the McGill University and hospital networks like Sunnybrook Health Sciences Centre. Advisory input is drawn from committees that include representatives from the Canadian Cancer Society, the Royal College of Physicians and Surgeons of Canada, and international partners such as the International Agency for Research on Cancer. Funding streams have combined federal appropriations, provincial allocations, and grants from organizations like the Canadian Institutes of Health Research and foundations such as the Terry Fox Foundation.

Data Collection and Methodology

Case ascertainment draws on sources including administrative records from institutions like St. Michael's Hospital, pathology reports from laboratories affiliated with the College of American Pathologists, hospital discharge data from systems used by Alberta Health Services, and death registrations via agencies such as Statistics Canada. Coding follows standards set by the International Classification of Diseases for Oncology and conventions promoted by the World Health Organization. Data linkage methods utilize techniques applied in studies from the Institute for Clinical Evaluative Sciences and privacy-preserving record linkage methods developed in collaboration with research centres like the Ottawa Hospital Research Institute. Quality control procedures reflect guidelines from the North American Association of Central Cancer Registries and benchmarking with registries such as the Surveillance, Epidemiology, and End Results Program.

Coverage and Content

The Registry includes variables on tumour site, morphology, stage at diagnosis using frameworks like the TNM staging system, date of diagnosis, and demographic fields such as age and sex for residents across jurisdictions including British Columbia, Saskatchewan, Manitoba, Nova Scotia, and the Yukon. It records primary cancers, multiple primaries, and death-related information that can be linked to mortality data from Statistics Canada and longitudinal databases maintained by entities like the Canadian Institute for Health Information. The dataset supports breakdowns by Indigenous status involving partnerships with organizations such as the Assembly of First Nations and regional health authorities including the First Nations Health Authority.

Uses and Applications

Researchers at universities like the University of British Columbia, policy analysts in ministries such as the Ministry of Health (Ontario), and clinicians at centres like BC Cancer use the Registry for incidence and survival studies, program evaluation, and resource planning. Public health initiatives including screening programs guided by agencies like the Canadian Task Force on Preventive Health Care and vaccination efforts informed by the National Advisory Committee on Immunization have drawn on Registry analyses. The data underpin reports by advocacy groups such as the Canadian Cancer Society and inform international comparisons with databases like the International Agency for Research on Cancer's Cancer Incidence in Five Continents.

Privacy, Ethics, and Data Security

Data stewardship adheres to privacy legislation including provincial statutes such as Personal Health Information Protection Act (Ontario) and federal frameworks including statutes overseen by Treasury Board of Canada Secretariat policies. Ethical review boards at institutions like the University Health Network and the McMaster University Research Ethics Board evaluate access requests. Secure access mechanisms reflect best practices from agencies such as the Canadian Institute for Health Information and data enclaves similar to those used by the Institute for Clinical Evaluative Sciences. Engagement with Indigenous partners invokes principles like OCAP developed by groups such as the First Nations Information Governance Centre.

Limitations and Quality Assurance

Limitations include reporting delays noted in analyses by the Canadian Institute for Health Information and potential under-ascertainment in remote regions like the Northwest Territories and the Nunavut due to healthcare access disparities reported by the Canadian Institutes of Health Research. Quality assurance uses audits, re-abstraction studies, and validation against hospital databases from centres such as Mount Sinai Hospital (Toronto) and cancer registries like Quebec Cancer Registry to address miscoding and completeness. Efforts to harmonize staging and classification follow initiatives championed by organizations like the International Agency for Research on Cancer and the North American Association of Central Cancer Registries to improve comparability and accuracy.

Category:Cancer registries