Bulletin: Regrouped Historical Data: Dissemination (PDF)

May 25, 2015—In an effort to ensure that historical time series analyses derived from these methodologies are relevant and useful, the Canadian Institute for Health Information (CIHI) is pleased to offer the grouping of up to 5 years of historical data from the Discharge Abstract Database (DAD) and the National Ambulatory Care Reporting System (NACRS).