The study aims to validate the effect of sleep restriction and stimulus control on improving chronic insomnia patients\' sleep habits and maladaptive sleep behaviors.
The purpose of sleep restriction is to reduce the patient\'s time in bed, bringing it closer to their actual sleep time, thereby improving sleep efficiency and quality. Stimulus control, on the other hand, aims to associate the bed with a rapid sense of falling asleep, reducing the negative association between the bed and insomnia.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
88
Sleep restriction: a) Reduce bedtime to match actual sleep time, but ≥4.5 hours, and adjust bedtime according to sleep efficiency; b) Avoid daytime naps and maintain a regular wake-up time. Stimulus control: a) Reduce wakeful time in bed and rebuild a positive association between sleepiness and bed; b) Use the bed solely for sleeping and sexual activities; c) Only go to bed when feeling sleepy at night or at the designated sleep time; d) If unable to fall asleep within about 20 minutes of being in bed, leave the bedroom and engage in relaxation activities until feeling sleepy, then return to bed for sleep; if still unable to fall asleep within about 20 minutes, repeat the process; e) Wake up at the same time every morning, including weekends.
Sleep hygiene education: 1. Sleep until feeling refreshed the next day. 2. Maintain regular exercise and eating habits, avoiding going to bed on an empty stomach. 3. Ensure a comfortable bedroom environment with suitable nighttime temperature, free from light and noise disturbances. 4. Avoid excessive consumption of beverages, alcohol, and smoking at night, and reduce caffeine intake. 5. Avoid bringing problems to bed and refrain from attempting to sleep. 6. Place the alarm clock under the bed or move it away from sight.
Xuanwu Hospital, Capital Medical University
Beijing, China
RECRUITINGThe change of Pittsburgh Sleep Quality Index (PSQI) total scores from baseline to 6 weeks
The PSQI consists of 7 factors ranging from 0 to 3 points, and the total score ranges from 0 to 21 with higher scores indicating poorer quality.
Time frame: Baseline, 6 weeks
The change of PSQI total scores from baseline to 3 months, 6 months, and 12 months
The PSQI consists of 7 factors ranging from 0 to 3 points, and the total score ranges from 0 to 21 with higher scores indicating poorer quality.
Time frame: baseline, 3 months, 6 months, and 12 months
The change of Insomnia severity index (ISI) total scores from baseline to 6 weeks, 3 months, 6 months, and 12 months
The ISI reporting insomnia symptoms severity consists of 7-items on a 5-point Likert scale, and the total score ranges from 0 to 28 with higher scores indicating more severe insomnia.
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
The change of sleep efficiency from baseline to 6 weeks, 3 months, 6 months, and 12 months
Sleep efficiency is assessed with the Carney (2012) consensus sleep diary. This is measured in percentage (higher scores indicating better sleep efficiency)
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
The change of Dysfunctional Beliefs and Attitudes about Sleep Scale (DBAS) total scores from baseline to 6 weeks, 3 months, 6 months, and 12 months
The DBAS assessing sleep related cognitions in 16 items rated on a 10-point Likert scale, and the total score ranges from 0 to 160 with higher scores indicating more intensive dysfunctional beliefs.
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
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The change of Snaith-Hamilton Pleasure Scale (SHAPS) total scores from baseline to 6 weeks, 3 months, 6 months, and 12 months
The SHAPS assessing anhedonia consists of 14 items, and the total score ranges from 14 to 56 with higher scores indicating more serious the anhedonia.
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
The change of Short Form 36 (SF-36) total scores from baseline to 6 weeks, 3 months, 6 months, 12 months
The SF-36 quantifying the quality of life in relation to health status consists of 36-items with eight areas covering physical functioning, role limitations brought on by physical issues, bodily pain, general health perceptions, vitality, social functioning, role limitations brought on by emotional issues, and perceived mental health. The total score ranges from 0-100 (the worst possible to the most possible).
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months.
The change of Patient Health Questionnaire-4 (PHQ-4) total scores from baseline to 6 weeks, 3 months, 6 months, and 12 months
The PHQ-4 comprises a 2-item depression scale and a 2-item anxiety scale. Each instrument can reach values from 0-6. Higher Scores are indicating higher distress.
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
The change of Beck Depression Inventory (BDI) total scores from baseline to 6 weeks, 3 months, 6 months, and 12 months
The BDI assessing the existence and severity of symptoms of depression consists of 21 items, and the total score ranges from 0 to 63 with higher scores indicating more severe depressive symptoms.
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
The change of Beck Anxiety Inventory (BAI) total scores from baseline to 6 weeks, 3 months, 6 months, and 12 months
The BAI assessing the existence and severity of symptoms of anxiety consists of 21 items, and the total score ranges from 0 to 63 with higher scores indicating more severe anxiety.
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
The change of Patient Health Questionnaire-15 (PHQ-15) total scores from baseline to 6 weeks, 3 months, 6 months, and 12 months
The PHQ-15 measuring somatic distress consists of 15 items, and the total score ranges from 0 to 30 with higher scores indicating more severe somatic distress.
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
The change of 5-item Perceived Deficits Questionnaire-Depression (PDQ-D-5) total scores from baseline to 6 weeks, 3 months, 6 months, and 12 months
The PDQ-D-5 assessing perceived cognitive deficits from the patient's perspective consists of 5 items, and the total score ranges from 0 to 20 with higher scores indicating greater perceived deficit.
Time frame: Baseline, 6 weeks, 3 months, 6 months, and 12 months
The change of Life Events Scale (LES) total scores from baseline to 3 months, 6 months, 12 months, 18 months, and 24 months
The LES assessing the perceived stress and number of stressful life events experienced consists of 48 items which are classified into three dimensions: family life events (28 items), work and study events (13 items), and social events (7 items) with higher scores in LES perceived greater stressfulness.
Time frame: Baseline, 3 months, 6 months, 12 months, 18 months, and 24 months