ClinicalTrials.gg
Not yet recruitingNCT06695000Updated Nov 19, 2024

Digital CBT-I for Chronic Insomnia

An interventional study of digital CBT-I in Insomnia Chronic and Insomnia Disorder, sponsored by WELT corp. Not yet recruiting at 5 sites in Korea, Republic of. Open to participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2024-11-19.

Sponsored by WELT corp · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Nov 2025, 1 year ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
19 Years and older
Sex
All
01

Study summary

This study evaluates the effectiveness and safety of a digital Cognitive Behavioral Therapy program for Insomnia (CBT-I) in individuals with chronic insomnia. Participants will be randomly assigned to either begin digital CBT-I immediately or join a wait-list.

Read the detailed description

This multi-site, randomized, wait-list controlled trial investigates the effectiveness and safety of a digital Cognitive Behavioral Therapy for Insomnia (CBT-I) program in treating chronic insomnia. Participants will be randomly assigned to start the digital CBT-I immediately or after a wait period. The digital CBT-I program, includes modules on sleep education, cognitive restructuring, stimulus control, sleep restriction, and relaxation techniques. Primary and secondary outcomes will measure insomnia severity, beliefs about sleep, daytime sleepiness, mood, quality of life, productivity, and sleep efficiency. Findings aim to assess the effectiveness of digital CBT-I in improving sleep and daily functioning among chronic insomnia patients in South Korea.

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Conditions studied

  • Insomnia Chronic
  • Insomnia Disorder
03

In context

Sleep Initiation and Maintenance Disorders

2,722 studies on the registry are indexed under Sleep Initiation and Maintenance Disorders; 726 are open to participants now.

This study's planned enrollment of 120 is above the median of 68 across 2,350 interventional studies indexed under Sleep Initiation and Maintenance Disorders.

Browse Sleep Initiation and Maintenance Disorders studies →

Lead sponsor

WELT corp is the lead sponsor of 5 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
19 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Meets diagnostic criteria for insomnia disorder according to the International Classification of Diseases, 10th Revision (ICD-10), including: F51: Nonorganic sleep disorders; G47: Sleep disorders
  • Has experienced insomnia symptoms for 3 months or longer.
  • Scores 8 or higher on the Insomnia Severity Index (ISI).
  • Oral and written fluency in Korean
  • Owns a smartphone and is independently able to use apps on a smartphone.
  • Voluntarily agrees to participate in this clinical study and provides signed .

Exclusion criteria

Exclusion Criteria:

  • Currently receiving non-pharmacological treatments for insomnia (e.g., CBT-I, light therapy, traditional medicine for sleep) within the past 3 months from screening.
  • Diagnosed with other sleep disorders aside from insomnia and currently symptomatic, such as:

    • Obstructive sleep apnea (G47.30)
    • Sleep behavior disorders
    • Restless leg syndrome (G28.8)
    • Narcolepsy (G47.4)
  • Has an active, ongoing physical illness that impedes daily functioning, such as:

    • Congestive heart failure
    • (COPD)
    • Acute pain
    • Neurological disorders (e.g., cerebrovascular disease)
    • Neurodegenerative disorders (e.g., dementia, multiple sclerosis)
    • Unstable medical conditions or of less than 6 months
  • Adjustments in schedule or dosage of sleep medications, antidepressants, anticonvulsants, anxiolytics, or antipsychotics within the past 3 months, or use of PRN (as needed) prescribed sleep medications.
  • Engaged in shift work.
  • Pregnant individuals or those planning to become pregnant during the study period.
  • Any condition that the investigator believes would make participation in the study not in the best interest of the participant or would preclude successful completion of study activities
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
120 participants (estimated)

Study arms

  • Experimental
    digital CBT-I

    Device: digital CBT-I

  • No intervention
    Waitlist Control

Interventions

  • Devicedigital CBT-I

    The intervention is a digital Cognitive Behavioral Therapy for Insomnia (CBT-I) program, delivered via a mobile application. The program includes structured, self-guided modules focusing on sleep hygiene education, cognitive restructuring, stimulus control, bed time restriction, and relaxation techniques. Each module offers interactive exercises and weekly assignments designed to support behavior change and improve sleep. Participants will receive app-based reminders to encourage regular engagement, with features for tracking progress and adherence throughout the 6 week program.

    Also known as: digital cognitive behavioral therapy for insomnia, SleepQ

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What researchers measure

Primary outcomes

  1. Change from Baseline in Insomnia Severity Index (ISI) Score at Post-Intervention

    The Insomnia Severity Index (ISI) measures the severity of insomnia symptoms, with scores ranging from 0 to 28. Higher scores indicate more severe insomnia, with 0-7 representing no clinically significant insomnia, 8-14 mild insomnia, 15-21 moderate insomnia, and 22-28 severe insomnia. This outcome measures the change in ISI score from baseline to 6 weeks, comparing changes between the digital CBT-I group and the waitlist control group.

    Time frame: "From baseline (Visit 1) to post-intervention assessment at 6 weeks

Secondary outcomes

  1. Change from Baseline in Dysfunctional Beliefs and Attitudes about Sleep (DBAS-16) Score at Post-Intervention (6 Weeks)

    The DBAS-16 measures maladaptive beliefs about sleep, with scores ranging from 0 to 160. Higher scores indicate more dysfunctional beliefs. This outcome evaluates the change in DBAS-16 score from baseline to 6 weeks, comparing changes between the digital CBT-I group and the waitlist control group.

    Time frame: From baseline to 6 weeks post-intervention

  2. Change from Baseline in Epworth Sleepiness Scale (ESS) Score at Post-Intervention (6 Weeks)

    The ESS measures daytime sleepiness, with scores ranging from 0 to 24. Higher scores indicate greater sleepiness, with scores above 10 suggesting excessive daytime sleepiness. This outcome assesses the change in ESS score from baseline to 6 weeks

    Time frame: From baseline to 6 weeks post-intervention

  3. Change from Baseline in Patient Health Questionnaire-9 (PHQ-9) Score at Post-Intervention (6 Weeks)

    The PHQ-9 measures the severity of depressive symptoms, with scores ranging from 0 to 27. Higher scores indicate more severe depression, with categories of mild, moderate, moderately severe, and severe depression. This outcome evaluates the change in PHQ-9 score from baseline to 6 weeks, comparing changes between the digital CBT-I group and the waitlist control group.

    Time frame: From baseline to 6 weeks post-intervention

  4. Change from Baseline in Generalized Anxiety Disorder-7 (GAD-7) Score at Post-Intervention (6 Weeks)

    The GAD-7 measures the severity of generalized anxiety symptoms, with scores ranging from 0 to 21. Higher scores indicate greater anxiety, with categories of mild, moderate, and severe anxiety. This outcome assesses the change in GAD-7 score from baseline to 6 weeks, comparing changes between the digital CBT-I group and the waitlist control group.

    Time frame: From baseline to 6 weeks post-intervention

  5. Change from Baseline in Quality of Life (SF-36) Score at Post-Intervention (6 Weeks)

    The SF-36 assesses overall quality of life across multiple domains, with higher scores indicating better quality of life. Scores range from 0 to 100 for each subscale. This outcome measures the change in SF-36 score from baseline to 6 weeks, comparing changes between the digital CBT-I group and the waitlist control group.

    Time frame: From baseline to 6 weeks post-intervention

  6. Change from Baseline in Work Productivity and Activity Impairment Questionnaire (WPAI-SHP) Score at Post-Intervention (6 Weeks)

    The WPAI-SHP assesses work productivity and impairment in daily activities, with scores from 0% to 100%, where higher scores indicate greater impairment. This outcome measures the change in WPAI-SHP score from baseline to 6 weeks, comparing changes between the digital CBT-I group and the waitlist control group.

    Time frame: From baseline to 6 weeks post-intervention

  7. Change from Baseline in Sleep Efficiency at Post-Intervention (6 Weeks)

    Sleep Efficiency (SE) measures the percentage of time spent asleep while in bed, calculated as total sleep time divided by time in bed. Higher values indicate improved sleep efficiency. This outcome assesses the change in SE from baseline to 6 weeks.

    Time frame: From baseline to 6 weeks post-intervention

  8. Change from Baseline in Sleep Onset Latency at Post-Intervention (6 Weeks)

    Sleep Onset Latency (SOL) measures the time (in minutes) it takes to transition from wakefulness to sleep. Lower values indicate improved sleep onset. This outcome assesses the change in SOL from baseline to 6 weeks.

    Time frame: From baseline to 6 weeks post-intervention

  9. Change from Baseline in Wake After Sleep Onset at Post-Intervention (6 Weeks)

    Wake After Sleep Onset (WASO) measures the time (in minutes) spent awake after initially falling asleep until final awakening. Lower values indicate improved sleep continuity. This outcome assesses the change in WASO from baseline to 6 weeks.

    Time frame: From baseline to 6 weeks post-intervention

  10. Change from Baseline in Total Sleep Time at Post-Intervention (6 Weeks)

    Total Sleep Time (TST) measures the total duration of sleep (in minutes) during the night. Higher values indicate improved sleep duration. This outcome assesses the change in TST from baseline to 6 weeks.

    Time frame: From baseline to 6 weeks post-intervention

Other outcomes

  1. System Usability Scale (SUS) Score for Digital CBT-I at Post-Intervention (6 Weeks)

    The SUS assesses usability of the digital CBT-I intervention, with scores ranging from 0 to 100. Higher scores indicate better usability, with scores above 68 considered above average. This outcome evaluates user experience and satisfaction with the digital CBT-I program.

    Time frame: 6 weeks post-intervention

07

Study locations

5 sites
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Jan 2025; primary completion for Nov 2025, 10 months later.

Of 78 industry-sponsored interventional studies with no phase under Sleep Initiation and Maintenance Disorders, half reached primary completion within 6 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 23. This study's planned 10 months is above that.

Counting every sponsor, half of 1,285 studies reached it within 15 months; a quarter within 6 and three quarters within 34.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 13, 2024
First posted
Nov 19, 2024
StartEst.
Jan 2025
Primary completionEst.
Nov 2025
CompletionEst.
Mar 2026
Last update
Nov 19, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 19, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06695000
Lead sponsor
WELT corp
Responsible party
Sponsor
First posted
Nov 19, 2024
Start date
Jan 2025 (estimated)
Primary completion
Nov 2025 (estimated)
Completion
Mar 2026 (estimated)
Last update
Nov 19, 2024

Study contacts

Yujin Lee, Chief Medical Officer, MD
Contact
info@weltcorp.com
+82-2-6439-0707

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Nov 2024. You cannot join it, but the record below documents what was studied.

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