Date	Change	Type of change
13-Nov-19	Silent deployment. Deployment was on an older server and consisted in an ensemble model that used the following input data: demographics, labs, vitals, medications, clinical orders, nursing notes.	Silent deployment
26-Nov-19	New “high sensitivity troponin” lab added.	Process change
20-Dec-19	Silent deployment update. The model was updated to an ensemble that relied only on demographics, labs, and vitals. We also fixed an issue where sodium labs (lab code is “NA”) were getting interpreted as “Not available”.	Silent deployment
24-Dec-19	Silent deployment update. The data processing was changed to address the troponin lab update.	Silent deployment
14-May-20	Silent deployment update. The deployment was moved to a different server and we used the time-aware MARS model (as described in Section “Model development”).	Silent deployment
25-Aug-20	Start of pilot phase. Alerts and ‘electronic sign out' was activated for 2 GIM teams.	Deployment
11-Sep-20	Risk group rule change: if patient is on step-up unit, their risk group must at minimum be “Medium risk”.	CW change
11-Sep-20	Alerting rule change: Alerts silenced for 24 h after patient leaves ICU.	CW change
11-Sep-20	Add “Team Stroke” to data extraction query.	Process change
11-Sep-20	Add new GIM ward location to data extraction query, corresponding to the opening of a new patient care tower.	Process change
15-Sep-20	Launch to all GIM teams.	Deployment
6-Oct-20	Deployment to charge nurses. Emails are sent to the charge nurse email address twice a day. Alerts are sent to the charge nurse phone.	Deployment
20-Oct-20	Deployment to palliative team—Full deployment. Emails are sent daily to the Palliative Care team email.	Deployment
19-Jan-21	Switch from alerts 3×/day to hourly alerts.	CW change
27-Apr-21	Add an extra GIM team (opened for COVID-19) to data extraction query.	Deployment
11-Jun-21	Remove extra COVID-19 team from data extraction query, as team closed.	Deployment
8-Mar-22	Alerting rule change: stop repeat alerts after 5th alert.	CW change