UMIN-ICDS Clinical Trial
| Unique ID issued by UMIN | UMIN000063636 |
|---|---|
| Receipt number | R000072799 |
| Scientific Title | Exploring routine work that contributes to improving executive function disorders |
| Date of disclosure of the study information | 2026/11/15 |
| Last modified on | 2026/11/15 17:46:21 |
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Basic information
Public title
Do posters at home help students who report ADHD traits keep submitting a daily to-do list?
Acronym
Posters and To-Do Lists Study
Scientific Title
Exploring routine work that contributes to improving executive function disorders
Scientific Title:Acronym
Environmental Cues and Executive Function Study
Region
| Japan |
Condition
Condition
Difficulties with everyday executive functioning associated with self-reported ADHD traits
Classification by specialty
| Psychiatry |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
To examine whether displaying instruction sheets in five locations at home increases daily to-do list submission over 60 days compared with storing the sheets without displaying them, and to explore the association between submission rate and change in everyday executive functioning.
Basic objectives2
Efficacy
Basic objectives -Others
Trial characteristics_1
Exploratory
Trial characteristics_2
Developmental phase
Not applicable
Assessment
Primary outcomes
Percentage of days on which a to-do list was submitted via the study Google Form during the 60-day period (number of days with a submission / 60 x 100), calculated at the end of the 60-day period and compared between groups.
Key secondary outcomes
1. Change in executive function scores on the Japanese version of the BRIEF-A self-report form, measured before and after the 60-day period.
2. Association between to-do list submission rate and change in BRIEF-A scores (exploratory analysis).
Base
Study type
Interventional
Study design
Basic design
Parallel
Randomization
Randomized
Randomization unit
Individual
Blinding
Open -no one is blinded
Control
No treatment
Stratification
NO
Dynamic allocation
NO
Institution consideration
Institution is not considered as adjustment factor.
Blocking
YES
Concealment
No need to know
Intervention
No. of arms
2
Purpose of intervention
Educational,Counseling,Training
Type of intervention
| Behavior,custom |
Interventions/Control_1
Intervention arm (with passive motivational cues): Five instruction sheets with a QR code are mailed to the participant and displayed in five visible locations at home. For 60 days, participants access a Google Form via the QR code at the start of each day and submit a to-do list containing the date and at least one task.
Interventions/Control_2
Control arm (without passive motivational cues): One instruction sheet with a QR code is mailed to the participant but is not displayed. For 60 days, participants submit a daily to-do list on their own initiative using the same Google Form as the intervention arm.
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
| 18 | years-old | <= |
Age-upper limit
| Not applicable |
Gender
Male and Female
Key inclusion criteria
Participants who meet all of the following: (1) undergraduate or graduate students; (2) reported that at least one of the ADHD-related characteristics (difficulties in executive functioning) listed in the recruitment poster applies to them; (3) fully understood the purpose and procedures of the study and voluntarily consented to participate.
Key exclusion criteria
Participants who meet any of the following: (1) currently taking ADHD medication (e.g., Concerta, Strattera, Intuniv); (2) difficulty accessing the Google Form daily due to lack of a device or internet access; (3) diagnosed with and currently being treated for a serious psychiatric disorder (e.g., severe depression, bipolar disorder, schizophrenia) for which participation may pose a physical or psychological burden; (4) otherwise judged inappropriate by the principal investigator.
Target sample size
40
Research contact person
Name of lead principal investigator
| 1st name | Ryosuke |
| Middle name | |
| Last name | Ohniwa |
Organization
University of Tsukuba
Division name
Department of Educational Promotion
Zip code
305-8575
Address
Room 602, Bldg E, Medical Area, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
TEL
029-853-3005
ohniwa@ohniwa-lab.org
Public contact
Name of contact person
| 1st name | Ryosuke |
| Middle name | |
| Last name | Ohniwa |
Organization
University of Tsukuba
Division name
Department of Educational Promotion
Zip code
305-8575
Address
Room 602, Bldg E, Medical Area, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, Japan
TEL
029-853-3005
Homepage URL
ohniwa@ohniwa-lab.org
Sponsor or person
Institute
University of Tsukuba
Institute
Department
Personal name
Funding Source
Organization
University of Tsukuba
Organization
Division
Category of Funding Organization
Self funding
Nationality of Funding Organization
Japan
Other related organizations
Co-sponsor
Name of secondary funder(s)
IRB Contact (For public release)
Organization
Ethics Committee, Faculty of Medicine, University of Tsukuba
Address
University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
Tel
029-853-3022
sien.ningenss@un.tsukuba.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
筑波大学（茨城県）
Other administrative information
Date of disclosure of the study information
| 2026 | Year | 11 | Month | 15 | 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
29
Results
Results date posted
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
Participant flow
Of 29 participants who consented and were enrolled, 7 did not proceed to randomization. Of the 22 randomized (11 per arm), 3 in the control arm did not start the 60-day period. The remaining 19 participants (11 intervention, 8 control) started the intervention and were included in the analysis.
Adverse events
No adverse events were reported during the study period.
Outcome measures
Plan to share IPD
No
IPD sharing Plan description
In accordance with the study protocol, individual participant data will be used only for this study and will not be shared with other institutions.
Progress
Recruitment status
No longer recruiting
Date of protocol fixation
| 2026 | Year | 04 | Month | 23 | Day |
Date of IRB
| 2026 | Year | 05 | Month | 07 | Day |
Anticipated trial start date
| 2026 | Year | 05 | Month | 14 | Day |
Last follow-up date
| 2026 | Year | 11 | Month | 22 | Day |
Date of closure to data entry
| 2026 | Year | 11 | Month | 26 | Day |
Date trial data considered complete
| 2026 | Year | 11 | Month | 26 | Day |
Date analysis concluded
| 2026 | Year | 11 | Month | 27 | Day |
Other
Other related information
Management information
Registered date
| 2026 | Year | 11 | Month | 15 | Day |
Last modified on
| 2026 | Year | 11 | Month | 15 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000072799
