1.1 Source data
The EMR data used in this study originated from a tertiary acute care hospital in Singapore, which provides a comprehensive range of medical and surgical speciality services.
The data contained information on 258,038 patients who had visited the hospital between January 2013 and December 2016. Overall, there were approximately 1.1 million records of medical conditions, 5.2 million transactions of ordered medications and 15.5 million entries of laboratory tests and investigations. Among ordered medications, these were further subdivided into dispensed orders (both outpatient and inpatient settings) and inpatient medications (medications administered during inpatient ward stay).