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DelApp-ICU

2018

An ICU adaptation of DelApp that uses a smartphone-based graded test of arousal and attention. Early discrimination was strong in a small feasibility sample, but it remains an objective component test rather than a stand-alone delirium diagnosis.

At a glance

Purpose
Domain-specific or adjunctive measure
Population
Adult
Setting
Intensive care
Time
~3-8 min in the feasibility study
Score or threshold
Score <=6 in the first feasibility study

Format: A smartphone task presents graded stimuli to quantify arousal and sustained attention. The ICU study took about three to eight minutes. The exact task and software should be obtained from the developer or source.

Primary validation papers

0 identified diagnostic-accuracy papers

Other forms of validation are described in the evidence section. What is counted?

Large-scale clinical implementation

Not yet reviewed.

A focused implementation review has not yet been completed for this profile.

Training and instructions

Public training resources have not yet been confirmed in this review. Check the linked developer or original source for instructions.

Start here

Tool and original sources

This record describes a method rather than a downloadable bedside form. The main source is linked below.

Original paper

  • Principal sourceTang E, Laverty M, Weir A, Wilson ES, Walsh TS, Allerhand M, et al. Development and feasibility of a smartphone-based test for the objective detection and monitoring of attention impairments in delirium in the ICU. Journal of critical care. 2018;48:104-111. doi: 10.1016/j.jcrc.2018.08.019. PMID: 30176525.

    This is the principal published source for DelApp-ICU. It is the main source for the method, its intended use and the evidence available at publication.

    Open PubMed ↗
No eligible DTA study identifiedVersion or adaptation
Classification

Classification

Domain-specific or adjunctive measureCognitive tests designed for deliriumUse in intensive care unitsMonitoring for new onset delirium

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Evidence

Diagnostic-accuracy evidenceNo eligible DTA study identified

Reported sensitivity and specificity

100%
Sensitivity
96%
Specificity

First-assessment result at score <=6 in a small feasibility sample; not an external validation estimate.

More evidence and citation details
Full name
DelApp-ICU
Related profiles
DelApp, DelBox
Evidence summary
development-only
Reference standard
Research delirium classification
Citation
Tang E, Laverty M, Weir A, Wilson ES, Walsh TS, Allerhand M, Parks S, MacLullich AMJ, Tieges Z Development and feasibility of a smartphone-based test for the objective detection and monitoring of attention impairments in delirium in the ICU Journal of Critical Care. 2018;48:104-111. PMID 30176525
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Primary validation studies

Distinct primary publications from the current diagnostic-accuracy audit. Reviews and repeated evaluations within one paper are not counted again. Overlapping cohorts have not all been reconciled. Read the counting rules and limitations.

No eligible diagnostic-accuracy paper is currently included in this audit. This does not mean the tool has never been validated. The source paper and other evidence on this profile may concern severity, reliability or another measurement purpose.

Copyright and reuse
Version
Smartphone-based research implementation reported in 2018
Information checked
2026-07-19

Instrument-specific terms apply. See the access and copyright policy or send a correction.

Base clinical review: 2026-07-29. Instrument description source check: 2026-09-05. Scope and limitations.