Discharge Abstract Database

Discharge Abstract Database
Name	Discharge Abstract Database
Jurisdiction	Canada
Established	1960s–1980s
Maintained by	Canadian Institute for Health Information
Type	Health services database

Discharge Abstract Database

The Discharge Abstract Database is a Canadian hospital administrative dataset compiled and maintained for secondary use by the Canadian Institute for Health Information and provincial/territorial ministries such as Ontario Ministry of Health, Alberta Health Services, British Columbia Ministry of Health, Manitoba Health, Seniors and Active Living, and Québec Ministère de la Santé et des Services sociaux. It supports reporting for national programs including the Canadian Chronic Disease Surveillance System, the Pan-Canadian Pharmaceutical Alliance, the Canadian Institute for Health Information’s Health Indicator reports, and provincial health planning initiatives tied to organizations like Health Quality Ontario and Saskatchewan Health Authority. The database interoperates with coding standards and classifications such as the International Classification of Diseases, 10th Revision (ICD-10), the Canadian Classification of Health Interventions, and administrative frameworks used by agencies like the Public Health Agency of Canada.

Overview

The database aggregates hospital discharge abstracts from acute care facilities, rehabilitation centres, psychiatric hospitals, and specialty centres across jurisdictions including Nova Scotia Department of Health and Wellness, Newfoundland and Labrador Department of Health, Prince Edward Island Department of Health and Wellness, and Northwest Territories Health and Social Services Authority. It feeds provincial performance measurement, case-mix grouping by systems similar to the Case Mix Group methodology, and national surveillance linked to programs such as the Canadian Nosocomial Infection Surveillance Program and the Canadian Stroke Best Practices Advisory Committee. Users include researchers at institutions like the University of Toronto, McGill University, University of British Columbia, Dalhousie University, and policy analysts working with bodies such as Canadian Medical Association and Canadian Nurses Association.

Data Content and Coding

Records contain fields for patient demographics, admission type, discharge disposition, principal and secondary diagnoses, procedures, length of stay, and facility identifiers used by authorities such as the Canadian Institute for Health Information and provincial registries like Ontario Health (Public Health Ontario). Clinical coding uses standards like ICD-10-CA and the Canadian Classification of Health Interventions (CCI), enabling linkage with case-mix systems such as Case Mix Group (CMG) and resource intensity weights used by payers and agencies including the Canada Health Transfer reporting mechanisms. Data elements map to national metadata standards overseen by groups such as the CIHI Data Quality Framework and provincial data custodians like eHealth Saskatchewan and HEALtheNet.

Collection Methods and Coverage

Submission workflows originate at hospitals and labs administered by organizations such as Vancouver Coastal Health, Calgary Zone (Alberta Health Services), Central Health (Newfoundland and Labrador), and inpatient units affiliated with academic centres like Sunnybrook Health Sciences Centre and The Ottawa Hospital. Facilities extract abstracts from clinical information systems—examples include implementations similar to those at St. Michael's Hospital and Royal Victoria Hospital—and submit to data stewards at agencies like the Canadian Institute for Health Information or provincial repositories following schedules and formats endorsed by bodies such as the Canadian Institute for Health Information’s technical specifications. Coverage varies by jurisdiction and care sector, with evolving inclusion of day surgery, same-day procedures, mental health, and long-term care records reflected in policy documents from ministries including Alberta Health and New Brunswick Department of Health.

Uses and Applications

Stakeholders use the database for hospital benchmarking, burden-of-disease estimates, health services research, and payment models administered through authorities like Health Canada and provincial ministries. Applications include epidemiologic surveillance by the Public Health Agency of Canada, monitoring surgical wait times relevant to programs at Cancer Care Ontario and British Columbia Cancer Agency, outcomes research by researchers at McMaster University and Université de Montréal, and resource planning for regional health authorities such as Hamilton Health Sciences and Nova Scotia Health Authority. The dataset underpins quality improvement initiatives tied to organizations such as the Canadian Patient Safety Institute and informs federal-provincial fiscal negotiations involving the Ministers of Health.

Quality Control and Limitations

Data quality processes draw on audit frameworks and validation routines used by institutions like CIHI and provincial analytics teams at bodies such as Ontario Health (Health Quality) and Alberta Health Services Analytics. Limitations include variable completeness across provinces, coding discrepancies between ICD-10-CA implementations, time lags in submission, and challenges in capturing ambulatory care seen in networks like Fraser Health or ambulatory clinics affiliated with SickKids. Researchers must account for potential biases when linking with registries such as the Canadian Congenital Anomalies Surveillance System or surveys administered by Statistics Canada.

Privacy, Security, and Governance

Custodianship and access are governed by provincial health information legislation including statutes like Ontario’s Personal Health Information Protection Act and Québec’s Act respecting Access to Documents Held by Public Bodies and the Protection of Personal Information as applied by custodians such as CIHI, provincial ministries, and regional health authorities like Vancouver Island Health Authority. Privacy-preserving linkage methods use deterministic and probabilistic matching strategies consistent with guidance from bodies such as the Health Data Research Network Canada and data-sharing agreements negotiated with ethics boards at institutions like University of Calgary and Université Laval. Security controls reflect standards promoted by agencies such as the Treasury Board of Canada Secretariat and incorporate encryption, audit logging, and role-based access management practiced by data stewards across Canadian jurisdictions.

Category:Health databases Category:Health informatics in Canada