{"meta":{"project":"ER Waits, Ranked (Open Nshipyard P10)","built":"2026-10-10","source":"Ontario Health, Time Spent in Emergency Departments (drivepublic.hqontario.ca endpoints); data asset NACRS via CIHI","source_url":"https://ontariohealth.ca/system/reporting/performance/time-spent-in-emergency-departments.html","vintage":"2025-08 to 2026-08 (monthly)","n_sites":159,"n_months":13,"indicators":{"PIA":"first_assessment","L":"low_urgency_stay","NAH":"high_urgency_stay","A":"admitted_stay"},"caveats":["As of the December 2025 data refresh, 43 additional sites were added to current and historical reporting; Ontario Health warns data exported after that should not be compared to earlier exports.","Monthly averages only. No visit-level timestamps exist in any open source, so hour-of-day arrival analysis is honestly unanswerable.","Averages, not medians. A few long stays pull the average up."]},"latest_month":"2026-08","months":["2025-08","2025-09","2025-10","2025-11","2025-12","2026-01","2026-02","2026-03","2026-04","2026-05","2026-06","2026-07","2026-08"],"n_hospitals":159,"n_ranked_pia":159,"provincial":{"first_assessment_hours":2.1,"admitted_stay_hours":18.5}}