Effect of cognitive behavior therapy for delayed phase (CBT-dp) on sleep problems and mental health in university students

Effect of cognitive behavior therapy for delayed phase (CBT-dp) on sleep problems and mental health in university students - Effect of cognitive behavior therapy for delayed phase (CBT-dp) on sleep problems and mental health in university students

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000052377

Enrollment

Registered

2023-10-02

Start date

2022-04-15

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

Delayed Sleep-Wake Phase Disorder

Interventions

Cognitive behavioral therapy for delayed phase (CBT-dp) including bright-light therapy

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: (1) Individuals whose BRIAN score is 41 points or higher (2) Individuals who currently enrolled in a university

Exclusion criteria

Exclusion criteria: Individuals with a history of mental health clinic visits.

Design outcomes

Primary

Measure	Time frame
Athen Insomnia Scale (AIS) Biological Rhythm Interview of Assessment in Neuropsychiatry (BRIAN) Epworth Sleepiness Scale (ESS)	—

Secondary

Measure	Time frame
K6 subjective sleep variable (Sleep diary) objective sleep variable (Actigraph)	—

Countries

Japan

Contacts

Public ContactISA OKAJIMA

Tokyo Kasei Univeristy Faculty of Humanities

okajima-i@tokyo-kasei.ac.jp03-3961-5276

Outcome results

None listed

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