“…Combined, these hospitals have approximately 1,200 hospital beds, 64 ICU beds, with 60,000 total hospital admissions and 2,500 total ICU admissions per year. We retrospectively analyzed prospectively collected data from “The Ottawa Hospital Data Warehouse,” a health administrative database used in previous studies ( 2 , 8 – 10 ). Data for each admitted patient is collected daily and stored in “The Ottawa Hospital Data Warehouse.” Data quality assurance is regularly conducted to ensure completeness and accuracy.…”