Table 3.

Key words associated with SAC1 incidents [50], along with excerpts from reports that were misidentified

Key words	Misidentified by machine classifiers (false positives)	Misidentified by humans (false negatives)
death	problem with death certificate, police notified	patient died in operation room, ambulance or ICU, or died when transferring
suicide	suicide or suspected suicide outside of hospital	inpatient suicide
high risk	high fall risk mentioned e.g. patient suffered extreme pain or hit their head, neurological observation, vital signs checked, CT scan of brain
	high risk medication, drug overdose or wrong medicine
police notified	absconded patients with mental health problems did not return from planned leave, police intervention
incorrect patient	duplicate CT scans due to problem with patient identification	incorrect site for patient procedure
infection	patient had infection in hospital	more than two staff infected by patients
blood transfusion reaction		shortly after commencing the flebogamma infusion patient reacted to the medication with shortness of breath, chest tightness, vomiting and diarrhea
aggression		patient with mental health problems or Hepatitis C infection assaulted staff