An interventional study of Sleep School and Treatment as usual in Insomnia Chronic, sponsored by University of Turku. Recruiting at 1 site in Finland. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-01.
Sponsored by University of Turku · Not applicable, Interventional, and Treatment
The goal of this clinical trial is to learn about insomnia treatment among primary care patients with chronic insomnia.
The main question it aims to answer is:
Researchers will compare Sleep School to treatment as usual (short counselling by an educated nurse) to see if the Sleep School works better than treatment as usual in decreasing the harm of insomnia.
2,722 studies on the registry are indexed under Sleep Initiation and Maintenance Disorders; 726 are open to participants now.
This study's planned enrollment of 250 is above the median of 68 across 2,350 interventional studies indexed under Sleep Initiation and Maintenance Disorders.
Browse Sleep Initiation and Maintenance Disorders studies →University of Turku is the lead sponsor of 122 studies on the registry; 16 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.
Exclusion Criteria:
Participants attend the Sleep School once a week for six weeks.
Behavioral: Sleep School
Participants receive short counselling about insomnia at the enrollment visit.
Behavioral: Treatment as usual
Sleep school is a structured method for the treatment of insomnia, which is based on cognitive behavioral therapy for insomnia (CBT-I). The central element of the method is a workbook for the patients. The essential parts of the method are strengthening the patient's self-efficacy, introducing the therapeutic exercises, and supporting the continued use of the exercises. The main themes of the Sleep school are information about sleep and the factors affecting it, behavioural components of CBT-I, like restricting the time spent in bed, cognitive components of CBT-I, like constructive worrying -exercise, and the exercises that aim to calm down mind and the autonomic nervous system. The Sleep School is held by an educated nurse.
Oral and written information about improving sleep habits given by an educated nurse.
Mean Change from Baseline in Insomnia Severity Index (ISI) score at 8 weeks
The ISI is a validated self-report tool for assessing the severity, and impact of current insomnia symptoms. It consists of 7 Likert-scale questions with a total score ranging from 0 to 28 (with higher scores indicating more severe insomnia). Change = Week 8 score - Baseline score.
Time frame: Baseline and Week 8
Mean change from Baseline in Patient Health Questionnaire 9 (PHQ-9) at 8 weeks
PHQ-9 is a validated self-administered instrument assessing each of the 9 Diagnostic and Statistical Manual of Mental Disorders (DSM)-IV criteria for depression as 0 (not at all) to 3 (nearly every day), and the severity of depression. Possible scores range from 0 to 27. Change = Week 8 score - Baseline score.
Time frame: Baseline and Week 8
Mean change from Baseline in EUROHIS Quality of Life 8-item Index at 8 weeks
EUROHIS Quality of Life 8-item Index is a validated instrument for the assessment of general quality of life. There are altogether eight questions about the general, physical, psychological, social, and environmental aspects of quality of life. Every question is scored from 1 (very poor) to 5 (very good). All scores can be added together and divided by 8 (the sum of the questions) to obtain the EUROHIS-QOL mean score. Change = Week 8 score - Baseline score.
Time frame: Baseline and Week 8
Mean change from Baseline in Work Ability Score (WAS) at 8 weeks
The WAS is the first item of the Work Ability Index (WAI), a validated instrument for the assessment of work ability. WAS is a single question "What is your current work ability compared to your lifetime best?" It has a 0-10 response scale, where 0 stands for "completely unable to work" and 10 stands for "work ability at its best." The WAS has been shown to have a strong association with the WAI and is reliable in evaluating work ability. Change = Week 8 score - Baseline score.
Time frame: Baseline and Week 8
Sleep Duration at Baseline
Information about sleep duration is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep duration. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep duration.
Time frame: Baseline
Sleep Stages at Baseline
Information about sleep stages is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep stages. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep stages.
Time frame: Baseline
Sleep Quality at Baseline
Information about objective sleep quality is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep quality. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep quality.
Time frame: Baseline
Sleep Duration at 8 weeks
Information about sleep duration is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep duration. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep duration.
Time frame: Week 8
Sleep Stages at 8 weeks
Information about sleep stages is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep stages. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep stages.
Time frame: Week 8
Sleep Quality at 8 weeks
Information about objective sleep quality is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep quality. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep quality.
Time frame: Week 8
Mean Change from 8 weeks in Insomnia Severity Index (ISI) score at 16 weeks
The ISI is a validated self-report tool for assessing the severity, and impact of current insomnia symptoms. It consists of 7 Likert-scale questions with a total score ranging from 0 to 28 (with higher scores indicating more severe insomnia). Change = Week 16 score - Week 8 score.
Time frame: Week 8 and Week 16
Mean change from Baseline in Patient Health Questionnaire 9 (PHQ-9) at 16 weeks
PHQ-9 is a validated self-administered instrument assessing each of the 9 DSM-IV criteria for depression as 0 (not at all) to 3 (nearly every day), and the severity of depression. Possible scores range from 0 to 27. Change = Week 16 score - Baseline score.
Time frame: Baseline and Week 16
Mean change from Baseline in EUROHIS Quality of Life 8-item Index at 16 weeks
EUROHIS Quality of Life 8-item Index is a validated instrument for the assessment of general quality of life. There are altogether eight questions about the general, physical, psychological, social, and environmental aspects of quality of life. Every question is scored from 1 (very poor) to 5 (very good). All scores can be added together and divided by 8 (the sum of the questions) to obtain the EUROHIS-QOL mean score. Change = Week 16 score - Baseline score.
Time frame: Baseline and Week 16
Mean change from Baseline in Work Ability Score (WAS) at 16 weeks
The WAS is the first item of the Work Ability Index (WAI), a validated instrument for the assessment of work ability. WAS is a single question "What is your current work ability compared to your lifetime best?" It has a 0-10 response scale, where 0 stands for "completely unable to work" and 10 stands for "work ability at its best." The WAS has been shown to have a strong association with the WAI and is reliable in evaluating work ability. Change = Week 16 score - Baseline score.
Time frame: Baseline and Week 16
Sleep Duration at 16 weeks
Information about sleep duration is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep duration. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep duration.
Time frame: Week 16
Sleep Stages at 16 weeks
Information about sleep stages is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep stages. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep stages.
Time frame: Week 16
Sleep Quality at 16 weeks
Information about objective sleep quality is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep quality. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep quality.
Time frame: Week 16
Mean Change from 8 weeks in Insomnia Severity Index (ISI) score at 26 weeks
The ISI is a validated self-report tool for assessing the severity, and impact of current insomnia symptoms. It consists of 7 Likert-scale questions with a total score ranging from 0 to 28 (with higher scores indicating more severe insomnia). Change = Week 26 score - Week 8 score.
Time frame: Week 8 and Week 26
Mean change from Baseline in Patient Health Questionnaire 9 (PHQ-9) at 26 weeks
PHQ-9 is a validated self-administered instrument assessing each of the 9 DSM-IV criteria for depression as 0 (not at all) to 3 (nearly every day), and the severity of depression. Possible scores range from 0 to 27. Change = Week 26 score - Baseline.
Time frame: Baseline and Week 26
Mean change from Baseline in EUROHIS Quality of Life 8-item Index at 26 weeks
EUROHIS Quality of Life 8-item Index is a validated instrument for the assessment of general quality of life. There are altogether eight questions about the general, physical, psychological, social, and environmental aspects of quality of life. Every question is scored from 1 (very poor) to 5 (very good). All scores can be added together and divided by 8 (the sum of the questions) to obtain the EUROHIS-QOL mean score. Change = Week 26 score - Baseline score.
Time frame: Baseline and Week 26
Mean change from Baseline in Work Ability Score (WAS) at 26 weeks
The WAS is the first item of the Work Ability Index (WAI), a validated instrument for the assessment of work ability. WAS is a single question "What is your current work ability compared to your lifetime best?" It has a 0-10 response scale, where 0 stands for "completely unable to work" and 10 stands for "work ability at its best." The WAS has been shown to have a strong association with the WAI and is reliable in evaluating work ability. Change = Week 26 score - Baseline score.
Time frame: Baseline and Week 26
Sleep Duration at 26 weeks
Information about sleep duration is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep duration. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep duration.
Time frame: Week 26
Sleep Stages at 26 weeks
Information about sleep stages is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep stages. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep stages.
Time frame: Week 26
Sleep Quality at 26 weeks
Information about objective sleep quality is collected with smart watches using a validated method. The method is based on assessment of biological signals with artificial intelligence algorithms. With a smart watch, the participant's heart rate, movements, oxygen saturation, and photoplethysmography signal is measured from the wrist. The photoplethysmography signal measures optically the changes in blood volume, which enables the assessment of the function of the sympathetic and parasympathetic nervous system. Albeit having different units, our previously developed deep learning applications utilize information from heart rate, movements, oxygen saturation, and photoplethysmography signals to assess sleep quality. Thus, regardless of the units of measured signals, information from all of these signals are combined by automatic algorithms to report one single value: sleep quality.
Time frame: Week 26
Mean Change from 8 weeks in Insomnia Severity Index (ISI) score at 12 months
The ISI is a validated self-report tool for assessing the severity, and impact of current insomnia symptoms. It consists of 7 Likert-scale questions with a total score ranging from 0 to 28 (with higher scores indicating more severe insomnia). Change = 12 Month score - Week 8 score.
Time frame: Week 8 and 12 Months
Mean change from Baseline in Patient Health Questionnaire 9 (PHQ-9) at 12 months
PHQ-9 is a validated self-administered instrument assessing each of the 9 DSM-IV criteria for depression as 0 (not at all) to 3 (nearly every day), and the severity of depression. Possible scores range from 0 to 27. Change = 12 Month score - Baseline score.
Time frame: Baseline and 12 Months
Mean change from Baseline in EUROHIS Quality of Life 8-item Index at 12 months
EUROHIS Quality of Life 8-item Index is a validated instrument for the assessment of general quality of life. There are altogether eight questions about the general, physical, psychological, social, and environmental aspects of quality of life. Every question is scored from 1 (very poor) to 5 (very good). All scores can be added together and divided by 8 (the sum of the questions) to obtain the EUROHIS-QOL mean score. Change = 12 Month score - Baseline score.
Time frame: Baseline and 12 Months
Mean change from Baseline in Work Ability Score (WAS) at 12 months
The WAS is the first item of the Work Ability Index (WAI), a validated instrument for the assessment of work ability. WAS is a single question "What is your current work ability compared to your lifetime best?" It has a 0-10 response scale, where 0 stands for "completely unable to work" and 10 stands for "work ability at its best." The WAS has been shown to have a strong association with the WAI and is reliable in evaluating work ability. Change = 12 Month score - Baseline score.
Time frame: Baseline and 12 Months
Plan to share: Yes — Data will be available from the study principal investigator upon reasonable request.
Started Dec 2023 (actual). Primary completion is estimated for Dec 2028, 60 months after the start.
Of 1,207 non-industry interventional studies with no phase under Sleep Initiation and Maintenance Disorders, half reached primary completion within 15 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 35. This study's planned 60 months is above that.
Counting every sponsor, half of 1,285 studies reached it within 15 months; a quarter within 6 and three quarters within 34.
How these figures are worked out, and which studies are left out of them.
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