Raw 3D-CAM severity score: Raw 3D-CAM Delirium Severity Score
2020An alternative 0-20 severity score formed by summing positive findings already collected during the 20 core 3D-CAM results. It is a severity version rather than a separate diagnostic instrument.
Classification
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Tool and original sources
Copyright restrictions mean that a copy of Raw 3D-CAM severity score cannot be provided on this website. Use the official access page below.
Original paper
- Original paperVasunilashorn SM, Devinney MJ, Acker L, Jung Y, Ngo L, Cooter M, et al. A New Severity Scoring Scale for the 3-Minute Confusion Assessment Method (3D-CAM). Journal of the American Geriatrics Society. 2020;68(8):1874-1876. doi: 10.1111/jgs.16538. PMID: 32479640.
This is the original published source for Raw 3D-CAM severity score. It is the main source for the method, its intended use and the evidence available at publication.
At a glance
- Purpose
- Measurement of delirium severity
- Population
- Adult
- Setting
- General / acute hospital
- Time
- derived from the approximately 3-minute parent 3D-CAM; no separate interview
- Items
- 20
- Score or threshold
- 0-20 severity range; no diagnostic threshold
Format: One point is added for each positive result among the 20 core results already collected during 3D-CAM. These comprise seven cognitive-test results, three patient symptom reports and ten interviewer observations. The protected prompts and operating rules are not reproduced here.
Evidence
Reported sensitivity and specificity
The 0-20 raw severity score discriminated reference-standard delirium with AUC 0.950 in the reused parent cohort; no diagnostic threshold was proposed.
More evidence and citation details
- Full name
- Raw 3D-CAM Delirium Severity Score
- Evidence summary
- derivation-and-internal-validation
- Reference standard
- Independent clinical delirium reference interview used in the parent validation study
- Citation
- Vasunilashorn SM, Fick DM, Marcantonio ER, Schmitt EM, Inouye SK, Jones RN A new severity score for the 3-minute diagnostic interview for CAM-defined delirium Journal of the American Geriatrics Society. 2020;68(8):1874-1876. PMID 32479640
Copyright and reuse
- Version
- Raw 0-20 3D-CAM severity method reported in 2020; use with the current authorised 3D-CAM version
- Rights holder
- Hospital Elder Life Program (copyright); Aging Brain Center (permissions administrator)
- Licence
- ALL-RIGHTS-RESERVED-PERMISSION-REQUIRED
- Information checked
- 2026-07-19
Instrument-specific terms apply. See the access and copyright policy or send a correction.
Sources checked 2026-07-29. How profiles are prepared.