ToolsCalculators
Abbreviated Mental Test 4 (AMT-4)
Four-item bedside cognitive screen with performance similar to AMT-10.
Abbreviated Mental Test 4 (AMT-4)
Correctly states age
Correctly states date of birth
Correctly names the place (e.g. hospital, ward)
Correctly states the current year
Result0/4
Any error (score <4/4) suggests cognitive impairment and warrants further assessment.
- AMT-4 score
- 0/4
When to use
- Very rapid bedside cognitive screening, e.g. as the cognitive component of the 4AT delirium screen.
Formula
One point each for correct age, date of birth, place, and current year. Range 0-4; any error (score <4) suggests cognitive impairment.
Pearls and pitfalls
- Achieved about 91% predictive agreement with the full AMT-10 in the validating cohort.
- Used as the cognitive-testing item within the 4AT delirium screen.