Table 1:

Description of ICES databases used in this study23

Name of databaseContent
Canadian Institute for Health Information Discharge Abstract DatabasePatient-level demographic, diagnostic, procedural and treatment information on all acute care hospital admissions
Canadian Institute for Health Information National Ambulatory Care Reporting SystemPatient-level demographic, diagnostic, procedural and treatment information on all emergency department visits
The DrugList FileList of Drug Identification Numbers used in Canada from 1990 forward; contains drug and product names, manufacturer, subclass information, pharmacy classification group codes, drug strength, route of administration, and first and last dispensing dates
ICES-derived cohortsValidated cohorts of people with specific diseases and conditions, including the Ontario Congestive Heart Failure Database, Ontario Diabetes Database and Ontario Hypertension Data Set
ICES Physician DatabaseCharacteristics of physicians and surgeons licensed to practise in Ontario
Ontario Cancer RegistryPatient-level demographic information and data on cancer diagnosis and cancer-related mortality
Ontario Drug Benefit program databaseRecords of dispensed outpatient prescriptions paid for by the provincial government
Ontario Health Insurance Plan claims history databaseClaims for physician services paid for by the provincial government
Ontario Health Insurance Plan Registered Persons DatabaseDemographic information and data on place of residence and vital status for all people eligible to receive insured health care services in the province
Statistics Canada Census Postal CodeOM Conversion FileInformation on rural residence and income quintiles of residents