AI system for self-harm detection in emergency department triage notes
Abstract: Adequate self-harm surveillance is a key part of suicide prevention. Our previous research demonstrated that an artificial intelligence (AI)-based system could effectively detect self-harm in emergency department triage notes. However, the system was developed using data from a single hospital, raising concerns about its generalisability. Read more →
PLOS Digital HealthAn AI system combining text normalisation with 1931 features maintained stable self-harm detection in prospective validation at its development metropolitan hospital, achieving PR AUC 0.84 over 329,655 triage notes in the following four years.
When applied to a regional hospital 150 km outside Melbourne, the same AI system's ability to distinguish self-harm cases declined to PR AUC 0.78, with instability linked to linguistic domain shift and different self-harm presentations.
ace




