Crosswalk for Delirium Severity Measures

Linking between the CAM-S, DRS-R-98, and MDAS instruments.

score of
is equal to a
score of


This application provides a conversion tool for delirium severity scores as measured by the following commonly used instruments: the Memorial Delirium Assessment Scale (MDAS), the Delirium Rating Scale-Revised-98 (DRS-R-98), and the Confusion Assessment Method-Severity (CAM-S). Appropriate for research and clinical use, this app utilizes crosswalks developed by the NIDUS Measurement and Harmonization Core to map equivalent scores for these three co-calibrated instruments.

For example, a clinician might use this tool if they were trying to assess if a patient’s delirium had improved over time but only had scores measured with two different instruments for comparison.