UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000060922
Receipt number R000069721
Scientific Title Reliability and Validity of the Japanese Version of the UB-CAM for Delirium Assessment in ICU Patients (UB-CAM-J-ICU)
Date of disclosure of the study information 2026/03/13
Last modified on 2026/03/13 14:19:38

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Basic information

Public title

Reliability and Validity of the Japanese Version of the UB-CAM for Delirium Assessment in ICU Patients (UB-CAM-J-ICU)

Acronym

UB-CAM-J-ICU

Scientific Title

Reliability and Validity of the Japanese Version of the UB-CAM for Delirium Assessment in ICU Patients (UB-CAM-J-ICU)

Scientific Title:Acronym

Reliability and Validity of the Japanese UB-CAM in ICU Patients (UB-CAM-J-ICU)

Region

Japan


Condition

Condition

Delirium

Classification by specialty

Psychiatry Anesthesiology Intensive care medicine
Nursing

Classification by malignancy

Malignancy

Genomic information

NO


Objectives

Narrative objectives1

The objective of this study is to examine the reliability and validity of the Japanese version of the UB-CAM in ICU patients. Specifically, using DSM-5 diagnosis by psychiatrists as the reference standard, we will evaluate the diagnostic accuracy of the Japanese version of the UB-CAM (sensitivity and specificity) and assess inter-rater reliability among nurses.

Basic objectives2

Others

Basic objectives -Others

Evaluation of the reliability and validity of the Japanese version of the UB-CAM as a delirium assessment tool

Trial characteristics_1

Confirmatory

Trial characteristics_2

Others

Developmental phase

Not applicable


Assessment

Primary outcomes

Diagnostic accuracy of the Japanese version of the UB-CAM (sensitivity and specificity), using DSM-5 diagnosis by psychiatrists as the reference standard

Key secondary outcomes

Diagnostic accuracy indices of the Japanese version of the UB-CAM (positive predictive value, negative predictive value, and diagnostic odds ratio), inter-rater reliability between two nurses (kappa coefficient), delirium prevalence during the study period, agreement between the Japanese version of the UB-CAM and DSM-5 diagnosis, and time required for UB-CAM assessment


Base

Study type

Observational


Study design

Basic design


Randomization


Randomization unit


Blinding


Control


Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms


Purpose of intervention


Type of intervention


Interventions/Control_1


Interventions/Control_2


Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

70 years-old <=

Age-upper limit


Not applicable

Gender

Male and Female

Key inclusion criteria

Patients aged 70 years or older who are scheduled for ICU admission and are capable of providing informed consent for study participation.

Key exclusion criteria

Patients with a diagnosis of dementia at admission, organic central nervous system injury, a history of psychiatric disorder, severe hearing or visual impairment, or difficulty in communication required for delirium assessment.

Target sample size

70


Research contact person

Name of lead principal investigator

1st name Yuji
Middle name
Last name Koga

Organization

Oita University of Nursing and Health Sciences

Division name

Division of Adult Nursing

Zip code

870-1201

Address

2944-9 Megusuno, Oita-City, Oita 870-1201, Japan

TEL

097-586-4400

Email

koga@oita-nhs.ac.jp


Public contact

Name of contact person

1st name Yuji
Middle name
Last name Koga

Organization

Oita University of Nursing and Health Sciences

Division name

Adult Nursing Division

Zip code

870-1201

Address

2944-9 Megusuno, Oita-City, Oita 870-1201, Japan

TEL

097-586-4400

Homepage URL


Email

koga@oita-nhs.ac.jp


Sponsor or person

Institute

Oita University of Nursing and Health Sciences

Institute

Department

Personal name



Funding Source

Organization

Ministry of Education, Culture, Sports, Science and Technology

Organization

Division

Category of Funding Organization

Japanese Governmental office

Nationality of Funding Organization

Japan


Other related organizations

Co-sponsor

Oita University Hospital (Oita Prefecture)
Hirosaki University Hospital (Aomori Prefecture)

Name of secondary funder(s)



IRB Contact (For public release)

Organization

Research Ethics and Safety Committee, Oita University of Nursing and Health Sciences

Address

2944-9 Megusuno, Oita-City, Oita 870-1201, Japan

Tel

097-586-4300

Email

rinri@oita-nhs.ac.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2026 Year 03 Month 13 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Enrolling by invitation

Date of protocol fixation

2025 Year 08 Month 25 Day

Date of IRB

2025 Year 08 Month 25 Day

Anticipated trial start date

2026 Year 02 Month 27 Day

Last follow-up date

2027 Year 03 Month 31 Day

Date of closure to data entry

2027 Year 04 Month 30 Day

Date trial data considered complete

2027 Year 05 Month 31 Day

Date analysis concluded

2028 Year 03 Month 31 Day


Other

Other related information

This is an observational study, and the recruitment status is set as "Enrolling by invitation" because eligible participants are limited to patients receiving care at the participating institutions. The first informed consent was obtained on February 27, 2026, and data collection for the first participant started on March 3, 2026. Therefore, this registration is being made after study initiation.


Management information

Registered date

2026 Year 03 Month 13 Day

Last modified on

2026 Year 03 Month 13 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000069721