An interventional study of WEsleep Interventions in Sleep, Sleep Disturbance and Sleep Hygiene, sponsored by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA). Completed at 1 site in Netherlands. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-07-10.
Sponsored by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) · Not applicable, Interventional, and Supportive care
In the WEsleep study, the investigators will perform a cluster randomized controlled trial. 3 surgical and 3 medical departments will be randomized to implement low-cost and simple interventions aimed at improving sleep in admitted patients. Another 3 surgical and 3 medical departments will be randomized to function as control groups. Subjective sleep quality and sleep-wake timing will be assessed in adult medical and surgical patients admitted into one of 12 participating wards, using questionnaires and a sleep diary. In addition, in a subset of participants, objective sleep measures will be assessed in with an EEG headband and a sleep mat.
Objectives
Primary objective
Our primary objective is to investigate whether a set of low-cost and easily applicable interventions improves subjective sleep quality of hospitalized patients on the second night of admission (for medical patients) and first postoperative night (for surgical patients) as measured the Richards-Campbell sleep questionnaire, comparing between intervention and control departments.
Secondary objectives
Study Procedure:
6 departments will be randomized (3 surgical, 3 medical) to receive the WEsleep-interventions, which will consist of: 1) Postponing morning nursing rounds to avoid waking patients early and daily assessment of sleep quality by the nurse during morning rounds; 2) Implementing sleep promoting interventions, including optimization of medication and iv fluid timing; 3) Education for health care professionals on sleep; 4) Implementing sleep rounds and change department infrastructure; including 'sleep menu' where patients can choose from earplugs, eye masks, and warm socks. Implement blackout curtains depending on baseline light intensity.
Implementation of the interventions will be evaluated on a regular basis throughout the length of the study to make sure that all interventions are provided to our patients as planned.
Before implementation, a baseline measurement will be conducted on all participating departments in a small number of patients (which is not part of the sample size). After study onset, we observed that some interventions were gradually implemented. As such, we decided that for optimal assessment of the effect of the intervention a run-in period of 12 weeks before starting assessment of the primary and secondary outcomes would be reasonable. Sleep measurements between study onset and outcome will be used to guide implementation and will be reported in eventual journal articles. After 12 weeks (that is, after July 1st), 33 patients per participating department will be included, for a total of 396 patients (12 departments with 33 patients each) and analyzed for the outcomes of the study. Informed consent for sleep measurements will be obtained on the first or second day of admission into one of the participating wards. Patients will be followed until discharge or for a maximum of 7 nights of admission. Patient characteristics, as well as data on the admission will be extracted from the electronic medical record.
In the objective sleep substudy, 24 patients will be recruited from each group (medical intervention and control groups, surgical intervention and control groups), for a total of 96 patients. Measurements between April 11th and June 30th will be used to guide implementation of interventionsPatients included after July 1st will be analyzed for the outcomes of the substudy. Informed consent for the substudy will be obtained separately at the same time as consent for the main study. All patients participating in the main study will be asked to participate in the substudy as well. After obtaining consent, a lottery system will decide which patients can participate in the substudy (due to the scarcity of available Dreem-3 EEG headbands and Withings Sleep Analyzers). Patients will be asked to complete two questionnaires daily:
Richards Campbell Sleep Questionnaire (RCSQ) on subjective sleep quality Consensus Sleep Diary (CSD) for day-to-day sleep wake timing during admission Furthermore, patients are asked at admission to complete the two questionnaires on sleep quality and sleep-wake timing on work- and work-free days (RCSQ and CSD) retrospectively, i.e. for 30 days before admission. Patients will also complete a Quality of Recovery 15 (QoR-15) questionnaire twice (once at one day after surgery/first day of admission and once three days after surgery/third day of admission).
In the substudy, objective sleep in patients will be measured with the Dreem-3 EEG-headband and the Withings Sleep Analyzer. The Dreem-3 headband uses electro-encephalography (EEG) and a validated algorithm to differentiate between wakefulness and various sleep stages (Rapid-Eye Movement (REM)-sleep and non-REM N1, N2 and N3 sleep) and the time at which these occur. The Withings Sleep Analyzer can be placed under the mattress and uses measurement of movement to differentiate between wakefulness and light, deep and REM-sleep and the times at which these occur.
126 studies on the registry are indexed under Sleep Hygiene; 32 are open to participants now.
This study's enrollment of 396 is above the median of 66 across 113 interventional studies indexed under Sleep Hygiene.
Browse Sleep Hygiene studies →Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) is the lead sponsor of 532 studies on the registry; 183 are open to participants now.
Counted across the registry records on this site, refreshed daily.
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.
Surgical: Patients admitted for elective surgery with planned overnight stay Medical:Patients admitted to the medical ward, with at least two expected nights of admission
Inclusion Criteria:
Surgical patients:
Medical patients:
Exclusion Criteria:
NB: After starting inclusions, some patients were found to spend the first postoperative night on post-anesthesia care unit (PACU) instead of a WEsleep intervention or control department and after deliberation this was added as a criterium for exclusion.
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.
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.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
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.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients admitted into the 3 surgical departments/clusters where the WEsleep interventions are implemented.
Other: WEsleep Interventions
Patients admitted into the 3 non-surgical departments/clusters where the WEsleep interventions are implemented
Other: WEsleep Interventions
Patients admitted into the 3 surgical departments/clusters where the WEsleep interventions are NOT implemented, and patients are receiving standardcare
Patients admitted into the 3 non-surgical departments/clusters where the WEsleep interventions are NOT implemented, and patients are receiving standardcare
1\) Postponing morning nursing rounds to avoid waking patients early and daily assessment of sleep quality by the nurse during morning rounds; 2) Implementing sleep promoting interventions, including optimization of medication and iv fluid timing; 3) Education for health care professionals on sleep; 4) Implementing sleep rounds and change department infrastructure; including 'sleep menu' where patients can choose from earplugs, eye masks, and warm socks. Implement blackout curtains depending on baseline light intensity.
Subjective Sleep Quality during admission
Subjective sleep quality will be assessed with the Richard Campbell Sleep Questionnaire (RCSQ). The RCSQ measures sleep quality on five questions using a visual analogue scale (VAS), ranging from 0 to 100, with higher scores indicating a better sleep quality. A sixth question was added to assess noise levels (as is quite customary), using a VAS-scale, ranging from 0-100, with a higher score indicating more noise
Time frame: Second night of admission (for medical patients), first postoperative night on ward (for surgical patients)
Night-to night changes in subjective sleep quality
Subjective sleep quality will be assessed with the Richard Campbell Sleep Questionnaire (RCSQ). The RCSQ measures sleep quality on five questions using a visual analogue scale (VAS), ranging from 0 to 100, with higher scores indicating a better sleep quality. A sixth question was added to assess noise levels (as is quite customary), using a VAS-scale, ranging from 0-100, with a higher score indicating more noise
Time frame: The first night until the seventh night of admission; if the patient is discharged before 7 nights of admission, all nights of admission will be analyzed
Difference in subjective sleep quality between during admission and at home
Subjective sleep quality will be assessed with the Richard Campbell Sleep Questionnaire, with five questions on a visual analogue scale, ranging from 0 to 100, with higher scores indicating better sleep quality. For this outcome, we will assess the subjective sleep quality at home retrospectively at inclusion.
Time frame: Second night of admission vs. a work- and workfree day 30 days before admission
Diurnal phase shift of sleep-wake timing
The phase shift of sleep-wake timing will be assessed by comparing midpoint of sleep during admission with midpoint of sleep on a work-free day before admission, both measured with the Consensus Sleep Diary (CSD). For this outcome, we will assess sleep-wake timing at home retrospectively at inclusion.
Time frame: Second night of admission (for medical patients) or first postoperative night (for surgical patients) vs. a workfree day 30 days before admission
Night-to-night changes in sleep-wake timing
The changes in sleep-wake timing (i.e. midpoint of sleep, sleep on- and offset time, sleep duration, sleep latency \& inertia and daytime napping), as measured by the CSD.
Time frame: The first night until the seventh night of admission; if the patient is discharged before 7 nights of admission, all nights of admission will be analyzed
Timing of food intake and sleep quality/timing
The association between food intake timing (i.e. first and last meal of the day and whether food was eaten after 21:00h), as measured by asking patients directly for the time of the first and last meal of the day and whether patients ate after 21:00h), and subjective sleep quality and sleep-wake timing (as measured by the Richard Campbell Sleep Questionnaire (with five questions on a visual analogue scale ranging from 0-100 with higher scores indicating better sleep quality) and Consensus Sleep Diary (with questions on sleep-wake timing) respectively).
Time frame: The first night until the seventh night of admission; if the patient is discharged before 7 nights of admission, all nights of admission will be analyzed
Quality of recovery (for surgical patients) and sleep quality/timing
The association between quality of recovery (in surgical patients), as measured by the Quality-of-Recovery 15 item questionnaire (QoR-15), and subjective sleep quality and sleep-wake timing (as measured by the Richard Campbell Sleep Questionnaire and Consensus Sleep Diary respectively). The QoR-15 will be completed twice by patients.
Time frame: First and third day after surgery
30 day mortality
30-day mortality, assessed by checking the medical record retrospectively 30 days after admission.
Time frame: 30 days after admission
30-day incidence of delirium during admission
30-day incidence of the clinical diagnosis of delirium during hospitalization, as assessed by a physician during admission. Patients will be assessed for delirium at the request of nursing staff or if the score of the Delirium Observation Screening scale is 3 or higher. The Delirium Observation Screening scale ranges from 0 to 39, with higher scores indicating a higher chance of delirium.
Time frame: 30 days after admission
30-day incidence of surgical site infections (for surgical patients)
30-day incidence of surgical site infections, as assessed by physicians from the department where patient is admitted during hospitalization. If the patient obtained a surgical site infection after discharge, incidence was assessed in the outpatient clinic by a physician from the department where patient was admitted.
Time frame: 30 days after admission
Objective sleep substudy: Sleep efficiency (objectively measured) during admission
Objective sleep quality will be measured by the Dreem-3 headband, using electro-encephalography (EEG) to differentiate between wakefulness, Rapid-Eye-Movement (REM) sleep and non-REM N1, N2 and N3 sleep. The primary outcome measure will be sleep efficiency (time slept divided by time in bed spent trying to sleep), compared for patients on intervention and control departments.
Time frame: Second night of admission (medical patients) and first postoperative night on surgical ward (for surgical patients)
Objective sleep substudy: Differences in objective sleep measures of sleep-wake timing during admission
Sleep-wake timing will be assessed by the Dreem-3 headband, using electro-encephalography (EEG) to differentiate between wakefulness, Rapid-Eye-Movement (REM) sleep and non-REM N1, N2 and N3 sleep, and the Withings Sleep Analyzer, differentiating between wakefulness, REM- and light and deep sleep. Changes in sleep-wake timing (i.e. midpoint of sleep, sleep on- and offset time, sleep duration, sleep latency \& inertia) will be compared for patients on intervention and control departments.
Time frame: The first night until the seventh night of admission; if the patient is discharged before 7 nights of admission, all nights of admission will be analyzed
Objective sleep substudy: Night-to-night changes in objective sleep measures during admission
Objective sleep quality will be measured by the Dreem-3 headband, using electro-encephalography (EEG) to differentiate between wakefulness, Rapid-Eye-Movement (REM) sleep and non-REM N1, N2 and N3 sleep, and the WIthings Sleep Analyzer, differentiating between wakefulness, REM- and light and deep sleep. The amount of time in each of these stages and their distribution, as well as total sleep time, will be compared for patients on intervention and control departments.
Time frame: The first night until the seventh night of admission; if the patient is discharged before seven nights of admission, all nights of admission will be analyzed
Objective sleep substudy: Difference between objective and subjective sleep measures during admission
Objective sleep quality will be measured by the Dreem-3 headband, using electro-encephalography (EEG) to differentiate between wakefulness, Rapid-Eye-Movement (REM) sleep and non-REM N1, N2 and N3 sleep, and the WIthings Sleep Analyzer, differentiating between wakefulness, REM- and light and deep sleep. Subjective sleep quality will be measured by the Richard Campbell Sleep Questionnaire, with five questions with a visual analogue scale with scores from 0 to 100, with higher scores indicating better sleep quality. Subjective sleep quantity will be measured with the Consensus Sleep Diary, with questions on sleep-wake timing. Objective and subjective sleep measures will be compared.
Time frame: The first night until the seventh night of admission; if the patient is discharged before seven nights of admission, all nights of admission will be analyzed)
Objective sleep substudy: Quality of recovery after surgery and objective sleep quality/timing
The association between quality of recovery, as measured by the Quality-of-Recovery 15 item questionnaire (QoR-15), and objective sleep quality and sleep-wake timing (as measured by the Dreem-3 headband, using electro-encephalography (EEG) to differentiate between wakefulness, Rapid-Eye-Movement (REM) sleep and non-REM N1, N2 and N3 sleep, and the Withings Sleep Analyzer, differentiating between wakefulness, REM- and light and deep sleep.). The QoR-15 will be completed twice by patients.
Time frame: First and third day after surgery (surgical patients)
Objective sleep substudy: Correlation 30 day mortality and objective sleep quality/timing
Correlation between 30-day mortality, assessed by checking the medical record retrospectively 30 days after admission and objective sleep quality and sleep-wake timing during admission (as measured by the Dreem-3 headband, using electro-encephalography (EEG) to differentiate between wakefulness, Rapid-Eye-Movement (REM) sleep and non-REM N1, N2 and N3 sleep, and the Withings Sleep Analyzer, differentiating between wakefulness, REM- and light and deep sleep.
Time frame: 30 days after admission
Objective sleep substudy: Correlation 30-day incidence of delirium during admission and objective sleep quality/timing
30-day incidence of the clinical diagnosis of delirium during hospitalization, as assessed by a physician during admission. Patients will be assessed for delirium at the request of nursing staff or if the score of the Delirium Observation Screening scale is 3 or higher. The Delirium Observation Screening scale ranges from 0 to 39, with higher scores indicating a higher chance of delirium. Objective sleep quality and sleep-wake timing during admission will be measured by the Dreem-3 headband, using electro-encephalography (EEG) to differentiate between wakefulness, Rapid-Eye-Movement (REM) sleep and non-REM N1, N2 and N3 sleep, and the Withings Sleep Analyzer, differentiating between wakefulness, REM- and light and deep sleep.).
Time frame: 30 days after admission
Objective sleep substudy: Correlation 30-day incidence of surgical site infections (for surgical patients) and objective sleep quality/timing
30-day incidence of surgical site infections, as assessed by physicians from the department where patient is admitted during hospitalization. If the patient obtained a surgical site infection after discharge, incidence was assessed in the outpatient clinic by a physician from the department where patient was admitted. Objective sleep quality and sleep-wake timing during admission will be measured by the Dreem-3 headband, using electro-encephalography (EEG) to differentiate between wakefulness, Rapid-Eye-Movement (REM) sleep and non-REM N1, N2 and N3 sleep, and the Withings Sleep Analyzer, differentiating between wakefulness, REM- and light and deep sleep.).
Time frame: 30 days after admission
Plan to share: No
Ran from Apr 2023 to primary completion in Mar 2024, 10 months.
Of 75 non-industry interventional studies with no phase under Sleep Hygiene, half reached primary completion within 8 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 18. This study's 10 months is above that.
Counting every sponsor, half of 79 studies reached it within 8 months; a quarter within 4 and three quarters within 18.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Jul 2025. You cannot join it, but the record below documents what was studied.
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