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The standardization of the Scale for Symptom Severity of Circadian Sleep-Wake Rhythm Disorders: a preliminary study of reliability

The standardization of the Scale for Symptom Severity of Circadian Sleep-Wake Rhythm Disorders: a preliminary study of reliability - The reliability of the Scale for Symptom Severity of Circadian Sleep-Wake Rhythm Disorders

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000036053
Enrollment
30
Registered
2019-03-01
Start date
2019-03-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Circadian sleep-wake rhythm disorders

Interventions

None listed

Sponsors

Fujita Health University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Patients who were fully informed and gave written consent voluntarily with sufficient understanding. 2. >= 15 and < 75 years old and having graduated from a junior highschool at the consent 3. With a diagnosis of delayed sleep-wake phase disorder, non-24-hour sleep-wake rhythm disorder, or irregular sleep-wake rhythm disorder according to International Classification of Sleep Disorders, 3rd edition(ICSD-3), including patients whose symptoms had remitted after treatment 4.Psychiatric and/or physical comorbidities are allowed 5. No restriction as to the ongoing treatments

Exclusion criteria

Exclusion criteria: 1. Shiftwork disorder or Jet lag disorder according to ICSD-3 2. Those who were judged inappropriate by a researcher in this study for some other reason

Design outcomes

Primary

MeasureTime frame
Inter-rater reliability of the Scale for Symptom Severity of Circadian Sleep-Wake Rhythm Disorders

Secondary

MeasureTime frame
Internal consistency of the Scale for Symptom Severity of Circadian Sleep-Wake Rhythm Disorders Factorial structure of the Scale for Symptom Severity of Circadian Sleep-Wake Rhythm Disorders

Countries

Japan

Contacts

Public ContactTSUYOSHI KITAJIMA

Fujita Health University, School of Medicine Department of Psychiatry

tsuyoshi@fujita-hu.ac.jp0562-93-9250

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026