What is the 4AT?
The 4AT is a simple and short (<2 min) delirium detection tool designed for easy and effective clinical use. It does not require special training.
The 4AT has the most formal validation data of any delirium tool, with 31 diagnostic test accuracy studies involving >6000 patients.
The 4AT is one of the most commonly-used tools in practice globally. It is highly sensitive and specific. As well as having excellent validity, the 4AT is also proven in routine care, with high completion rates, and delirium detection at expected clinical rates.
Download and use is free, and always will be.
* Why use the 4AT? *
Do I need permission to use the 4AT? No - no permission is required to download and use. This includes use in Electronic Health Records (EHRs) / Electronic Medical Records (EMRs). Just go ahead!
Do I need to register to use the 4AT? No - no registration is required. You are welcome to download and use from this website or any other source.
✨ Free official 4AT apps: Android iOS
Brief guide to clinical delirium care
deliriumwords.com: a blog on delirium by the 4AT main author
Note: responsibility for the interpretation of scores and any actions rests with the clinical team using the 4AT. As per accepted clinical practice, a diagnosis of delirium should always be made following clinical assessment by suitably qualified staff.
Website by Alasdair MacLullich