Confirmed Drug Overdose ED Visits by ONS Neighbourhood of Patient (English, CSV)

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Publisher-reported update

2026-09-09

Date Created: November 2023 Update Frequency: Yearly Last Reviewed: November 2023 Accuracy, Completeness, and Known Issues: A drug overdose is defined as an unscheduled ED visit where drug poisoning was recorded as the main or other problem. Unconfirmed diagnoses are excluded. Geographic data are extracted yearly by OPH from NACRS using IntelliHEALTH Ontario and includes unscheduled ED visits for poisoning by narcotics, hallucinogens, hypnotics, stimulants and cannabis (T40.0-T40.9; T423 and T436). ED visits may underestimate the full extent of drug overdoses occurring in the community as not all individuals experiencing overdose seek care. The attribution of ED visits to neighbourhoods reflects the location of residence of the patient (based on their postal code), and not necessarily the neighbourhood where the drug overdose event occurred. Residents with a postal code that straddles more than one neighbourhood are allocated to neighbourhoods based on the relative size of the population residing in each of the straddled neighbourhoods. If there is no postal code information for an individual believed to reside in Ottawa, the resident is not attributed to a neighbourhood.…

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