UMIN-ICDS Clinical Trial
| Unique ID issued by UMIN | UMIN000061706 |
|---|---|
| Receipt number | R000070611 |
| Scientific Title | Effectiveness of reminding methods on health check-up attendance rate |
| Date of disclosure of the study information | 2026/05/27 |
| Last modified on | 2026/05/27 16:31:32 |
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Basic information
Public title
Effectiveness of reminding methods on health check-up attendance rate
Acronym
Effectiveness of reminding methods on health check-up attendance rate
Scientific Title
Effectiveness of reminding methods on health check-up attendance rate
Scientific Title:Acronym
Effectiveness of reminding methods on health check-up attendance rate
Region
| Japan |
Condition
Condition
N/A
Classification by specialty
| Not applicable | Adult |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
To evaluate the effectiveness of reminding methods (short message service [SMS] and letter) on the attendance rate of specific health check-up
Basic objectives2
Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase
Assessment
Primary outcomes
Attendance rate of specific health check-up
Key secondary outcomes
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
NO
Concealment
Numbered container method
Intervention
No. of arms
5
Purpose of intervention
Prevention
Type of intervention
| Other |
Interventions/Control_1
Short message service (x1)
Interventions/Control_2
Short message service (x2)
Interventions/Control_3
Short message service (x3)
Interventions/Control_4
sending letter (x1)
Interventions/Control_5
no intervention
Interventions/Control_6
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10
Eligibility
Age-lower limit
| 40 | years-old | <= |
Age-upper limit
| 74 | years-old | >= |
Gender
Male and Female
Key inclusion criteria
The intervention providers know the information on the home address and mobile phone number.
Key exclusion criteria
The intervention providers do not know the information on the home address and mobile phone number.
Target sample size
52000
Research contact person
Name of lead principal investigator
| 1st name | Hiroshi |
| Middle name | |
| Last name | Murayama |
Organization
Tokyo Metropolitan Institute for Geriatrics and Gerontology
Division name
Research Team for Social Participation and Healthy Aging
Zip code
173-0015
Address
35-2 Sakae-cho, Itabashi-ku, Tokyo
TEL
03-3964-3241
murayama@tmig.or.jp
Public contact
Name of contact person
| 1st name | Hiroshi |
| Middle name | |
| Last name | Murayama |
Organization
Tokyo Metropolitan Institute for Geriatrics and Gerontology
Division name
Research Team for Social Participation and Healthy Aging
Zip code
173-0015
Address
35-2 Sakae-cho, Itabashi-ku, Tokyo
TEL
03-3964-3241
Homepage URL
murayama@tmig.or.jp
Sponsor or person
Institute
Tokyo Metropolitan Institute for Geriatrics and Gerontology
Institute
Department
Personal name
Funding Source
Organization
N/A
Organization
Division
Category of Funding Organization
Other
Nationality of Funding Organization
Other related organizations
Co-sponsor
Name of secondary funder(s)
IRB Contact (For public release)
Organization
Tokyo Metropolitan Institute for Geriatrics and Gerontology
Address
35-2, Sakae-cho, Itabashi-ku, Tokyo
Tel
03-3964-3241
murayama@tmig.or.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 | 05 | Month | 27 | Day |
Related information
URL releasing protocol
N/A
Publication of results
Unpublished
Result
URL related to results and publications
N/A
Number of participants that the trial has enrolled
51241
Results
Because the third SMS reminder overlapped with the COVID-19 pandemic, the groups assigned to receive two and three SMS reminders were combined for analysis. Compared with the no-reminder group, the one-postcard and one-SMS reminder groups had higher consultation rates (p < 0.001), with no significant difference between them (p = 0.624). The two-SMS reminder group had the highest consultation rate among all groups (p < 0.001).
Results date posted
| 2026 | Year | 05 | Month | 27 | Day |
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
National Health Insurance subscribers aged 40-74 years residing in Yokohama City, Kanagawa Prefecture. As of July 2020, individuals who had not yet undergone the specific health checkup for fiscal year 2020 were included.
Participant flow
Health checkup vouchers were sent to all participants in May 2020. For both postcard and SMS reminders, the first reminder was sent in September 2020, and the second SMS reminder was sent in November 2020.
Adverse events
Not reported.
Outcome measures
Attendance rate of specific health check-up
Plan to share IPD
IPD sharing Plan description
Progress
Recruitment status
Completed
Date of protocol fixation
| 2020 | Year | 02 | Month | 01 | Day |
Date of IRB
| 2020 | Year | 02 | Month | 26 | Day |
Anticipated trial start date
| 2020 | Year | 05 | Month | 01 | Day |
Last follow-up date
| 2021 | Year | 03 | Month | 31 | Day |
Date of closure to data entry
| 2021 | Year | 06 | Month | 30 | Day |
Date trial data considered complete
| 2021 | Year | 07 | Month | 31 | Day |
Date analysis concluded
| 2022 | Year | 03 | Month | 31 | Day |
Other
Other related information
Management information
Registered date
| 2026 | Year | 05 | Month | 27 | Day |
Last modified on
| 2026 | Year | 05 | Month | 27 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000070611
