data item AE incidence rate AG, YH WEB: http://www.crilifetree.com/pdfs/drug-safety/long-term-safety-study-of-morphine-sulfate-and-naltrexone-hydrochloride.pdf A data item that is calculated as the number of patients realized with an adverse event beginning in an interval divided by the number of patients taking the same medical intervention within the same interval. The incidence thus indicates the number of newly occurring events over time.