Trial reportBMC medicine2019
Delirium detection in older acute medical inpatients: a multicentre prospective comparative diagnostic test accuracy study of the 4AT and the confusion assessment method.
Trial report in BMC medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04962815 (Ceribell Delirium Data Collection Study), which is not on this map. Cited by 86 papers, 7 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Ceribell Delirium Data Collection Study
Who cites it
86 citing papers in PubMed, 7 syntheses or guidelines pooled it, 205 citations in OpenAlex.
- GRADE-Based Clinical Practice Guidelines for Emergency Department Delirium Risk Stratification, Screening, and Brain Imaging in Older Patients With Suspected Delirium.Academic emergency medicine : official journal of the Society for Academic Emergency Medicine · 2026Guideline
- Delirium detection in the emergency department: A diagnostic accuracy meta-analysis of history, physical examination, laboratory tests, and screening instruments.Academic emergency medicine : official journal of the Society for Academic Emergency Medicine · 2024Pooled it
- A pandemic of delirium: an updated systematic review and meta-analysis of occurrence of delirium in older adults with COVID-19.European geriatric medicine · 2024Pooled it
- Diagnostic accuracy of the 4AT for delirium detection in older adults: systematic review and meta-analysis.Age and ageing · 2021Pooled it
- Screening instruments for cognitive impairment in older patients in the Emergency Department: a systematic review and meta-analysis.Age and ageing · 2021Pooled it
- Diagnostic Test Accuracy of the 4AT for Delirium Detection: A Systematic Review and Meta-Analysis.International journal of environmental research and public health · 2020Pooled it
- The consistent burden in published estimates of delirium occurrence in medical inpatients over four decades: a systematic review and meta-analysis study.Age and ageing · 2020Pooled it
- Geriatric team support in the emergency department-a randomised trial investigating the effects on hospital admission and community care in older adults (GerED-21).Age and ageing · 2026Trial
- A randomized pilot and feasibility trial of live and recorded music interventions for management of delirium symptoms in acute geriatric patients.BMC geriatrics · 2025Trial
- Is Comprehensive Geriatric Assessment Admission Avoidance Hospital at Home an Alternative to Hospital Admission for Older Persons? : A Randomized Trial.Annals of internal medicine · 2021Trial
- "Pleasantly confused" and missed opportunities for delirium recognition: A hospital record audit.International journal of nursing studies advances · 2026Article
- Care Needs for Patients Screened Positive for Cognitive Impairment and Delirium: A Cross-Sectional Observational Study.Journal of advanced nursing · 2026Observational
- Review
- Targeted Delirium Screening in At-risk Older Adults in the Emergency Department Improves Screening Rates.Journal of the American College of Emergency Physicians open · 2026Article
- Article
- Prevalence, associated factors, and predictive nomogram of delirium among older nursing home residents in China.European geriatric medicine · 2026Article
- Article
- Translation, Cultural Adaptation, and Validation of the Greek Version of the 4 'A's Test for Delirium Screening in Elderly Patients with Hip Fracture.Clinics and practice · 2026Article
- [Comments on the article "Incidence and factors associated with delirium in an Emergency Department"].Revista medica del Instituto Mexicano del Seguro Social · 2026Article
- Preoperative nutritional status, frailty, and postoperative delirium in patients undergoing pancreatic cancer surgery: a prospective observational study.Frontiers in nutrition · 2026Article
26 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
17 authors at 8 institutions in 1 country.
Funding
Abstract
backgroundDelirium affects > 15% of hospitalised patients but is grossly underdetected, contributing to poor care. The 4 'A's Test (4AT, www.the4AT.com ) is a short delirium assessment tool designed for routine use without special training. The primary objective was to assess the accuracy of the 4AT for delirium detection. The secondary objective was to compare the 4AT with another commonly used delirium assessment tool, the Confusion Assessment Method (CAM).
methodsThis was a prospective diagnostic test accuracy study set in emergency departments or acute medical wards involving acute medical patients aged ≥ 70. All those without acutely life-threatening illness or coma were eligible. Patients underwent (1) reference standard delirium assessment based on DSM-IV criteria and (2) were randomised to either the index test (4AT, scores 0-12; prespecified score of > 3 considered positive) or the comparator (CAM; scored positive or negative), in a random order, using computer-generated pseudo-random numbers, stratified by study site, with block allocation. Reference standard and 4AT or CAM assessments were performed by pairs of independent raters blinded to the results of the other assessment.
resultsEight hundred forty-three individuals were randomised: 21 withdrew, 3 lost contact, 32 indeterminate diagnosis, 2 missing outcome, and 785 were included in the analysis. Mean age was 81.4 (SD 6.4) years. 12.1% (95/785) had delirium by reference standard assessment, 14.3% (56/392) by 4AT, and 4.7% (18/384) by CAM. The 4AT had an area under the receiver operating characteristic curve of 0.90 (95% CI 0.84-0.96). The 4AT had a sensitivity of 76% (95% CI 61-87%) and a specificity of 94% (95% CI 92-97%). The CAM had a sensitivity of 40% (95% CI 26-57%) and a specificity of 100% (95% CI 98-100%).
conclusionsThe 4AT is a short, pragmatic tool which can help improving detection rates of delirium in routine clinical care.
trial registrationInternational standard randomised controlled trial number (ISRCTN) 53388093 . Date applied 30/05/2014; date assigned 02/06/2014.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.