Does late morning wake-up affect sleep in the following night in patients with primary insomnia?

Does late morning wake-up affect sleep in the following night in patients with primary insomnia? - Does late morning wake-up affect sleep in the following night in patients with primary insomnia?

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000006012

Enrollment

380

Registered

2011-07-20

Start date

2011-07-01

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

Primary insomnia

Interventions

Placebo (the database only from placebo groups will be used for the current study)

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: All the patients randominzed in placebo group in the clinical study in patients with primary insomnia

Exclusion criteria

Exclusion criteria: Patients who were not included in FAS were excluded

Design outcomes

Primary

Measure	Time frame
To evaluate whether sleep latency is significantly different in the following night when patients woke up later than usual compared to those when they woke up as usual.	—

Secondary

Measure	Time frame
1. To evaluate whether total sleep time is significantly different in the following night when patients woke up later than usual compared to those when they woke up as usual. 2. To evaluate whether bedtime is significantly different in the following night when patients woke up later than usual compared to those when they woke up as usual. 3. To evaluate whether there are differences in sleep parameters (e.g. sleep latency and total sleep time) between weekday and weekend.	—

Measure

Time frame

1. To evaluate whether total sleep time is significantly different in the following night when patients woke up later than usual compared to those when they woke up as usual. 2. To evaluate whether bedtime is significantly different in the following night when patients woke up later than usual compared to those when they woke up as usual. 3. To evaluate whether there are differences in sleep parameters (e.g. sleep latency and total sleep time) between weekday and weekend.

—

Countries

Japan

Contacts

Public ContactAtsushi Ogawa

Graduate School of Medicine and Public Health, Kyoto University Department of Pharmacoepidemiology

Outcome results

None listed

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