4AT – 2 minute delirium detection validated in 30+ studies

Evidence-based bedside tool for rapid delirium screening across acute, community, and peri-operative settings.

• ~2 min administration time

• No training required: designed for immediate use by nurses, doctors, and AHPs

• Extensive evidence: 31 diagnostic‑accuracy studies (>6000 pts)

• High sensitivity & specificity

• Globally adopted: translated into >20 languages & included in national guidelines

• Completely free: instant access, no registration required

• Free EHR integration: ready for systems like EPIC with no licensing required