Sleep clinic outcomes and treatment practices at St. Olavs
Official title: The Sleep Clinic Outcome and Practice Study: The SUP-study
Run by St. Olavs Hospital · NCT06669507 · Data updated 2026-11-12
This study will see how usual clinic care — cognitive behavioral therapy for insomnia (CBT‑I) and chronotherapy — works for adults referred to a sleep clinic with insomnia or circadian rhythm sleep problems.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 3400 (estimated) |
| Sponsor | St. Olavs Hospital Academic / other |
| Locations | 1 site (Trondheim) |
| Status | Recruiting |
| Started | January 1, 2025 |
| Main results expected | December 31, 2030 |
| Study ends | December 31, 2030 |
| Registry record updated | July 20, 2026 |
| Trial ID | NCT06669507 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (≥18) referred to the Sleep Clinic at St. Olavs Hospital with a diagnosis of insomnia disorder or a sleep‑wake rhythm disorder who want non‑pharmacological treatment and can give written consent are ideal candidates.
✕Probably not a fit
People who work night shifts or have external limits on sleep opportunity, are blind, psychotic, have epilepsy, or have ongoing substance abuse (and thus are excluded) are unlikely to receive benefit from these behavioral treatments.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
All patients referred to the Sleep Clinic at St. Olavs Hospital are invited to join before their first clinician visit and will receive treatment as usual from trained psychiatrists or psychologists. Clinicians will log the timing, duration, and use of specific treatment components while patients complete self-report questionnaires and sleep diaries at treatment end. The study focuses on two common non-pharmacological approaches: CBT‑I for insomnia and chronotherapy for circadian rhythm disorders. Collected data will be used to describe real-world practice patterns and patient-reported outcomes in this clinical setting.
Why it matters
Potential benefit: If successful, the findings could help tailor and improve non-drug sleep treatments by identifying which components and timings produce better outcomes.
How similar studies have gone: Cognitive behavioral therapy for insomnia (CBT‑I) has strong evidence from trials, while clinic-based chronotherapy for circadian disorders is less well described in real-world clinical practice.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Referred to the Sleep Clinic at St. Olavs Hospital for an assessment of a sleep-wake disruption. * Age \>= 18 years. * Willing and able to provide written informed consent. * Meeting the diagnostic criteria for at least one of the following disorders: F51.0 Insomnia disorder or G47.2 Sleep-wake rhythm disorders, considered being either: Delayed sleep-wake phase disorder, Advanced sleep-wake phase disorder, Non-24-hour sleep-wake disorder or Irregular sleep-wake disorder * Desire non-pharmacological sleep treatment Exclusion Criteria: * Individuals working night shifts or that otherwise have external conditions that result in inadequate sleep opportunity, such as caring for an infant or does not have permanent housing etc. * Individuals being blind * Individuals being psychotic * Individuals having epilepsy * Individuals having an ongoing substance abuse
Where it's running
-
Sleep Clinic, St Olavs Hospital
Trondheim, Norway Recruiting
Study contacts
- Study coordinator: Knut Langsrud, PhD/MD
- Email: knut.langsrud@stolav.no
- Phone: 73864500
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.