Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Primary |
Change in severity of insomnia |
All patients included in the study will be asked to complete the Insomnia Severity Index (ISI; Minimum value = 0; Maximum value = 4. Higher scores mean worse outcome) to assess for any changes in symptoms of insomnia. |
At baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course. |
|
Primary |
Change in symptoms of insomnia |
All patients included in the study will be asked to complete the Bergen Insomnia Scale ( Minimum value = 0; Maximum value = 7. Higher scores mean worse outcome) to assess for any changes in symptoms of insomnia |
At baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course. |
|
Secondary |
Change in sleep efficiency |
All patients included in the study will be asked to keep at sleep diary for the whole duration of the course. Sleep efficiency will be calculated based on the sleep diary. |
Calculations of sleep efficiency at baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course, will be compared. |
|
Secondary |
Change in dysfunctional beliefs and attitudes about sleep |
All patients included in the study will be asked to complete the Dysfunctional Beliefs and Attitudes about Sleep scale (DBAS-16; Minimum = 0; Maximum = 10. Higher values mean worse outcome) to assess for any changes in dysfunctional beliefs and attitudes about sleep. |
At baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course. |
|
Secondary |
Change in daytime rumination about tiredness and negative consequences of lack of sleep |
All patients included in the study will be asked to complete the Daytime Insomnia Symptom Response Scale (DISRS; Minimum = 1; Maximum = 4. Higher values mean worse outcome) to assess for any changes in rumination about insomnia symptoms. |
At baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course. |
|
Secondary |
Change in compliance with sleep hygiene measures |
All patients included in the study will be asked to complete the Sleep Hygiene Index (SHI-13; Minimum value = 1; Maximum value = 5. Higher values mean worse outcome) to assess for any changes in compliance with sleep hygiene measures. |
At baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course. |
|
Secondary |
Change in symptoms of depression |
All patients included in the study will be asked to complete the Patient Health Questionnaire-9 (PHQ-9; Minimum value = 0; Maximum value = 3. Higher values mean worse outcome) to assess for any changes in symptoms of depression. |
At baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course.] |
|
Secondary |
Change in symptoms of anxiety |
All patients included in the study will be asked to complete the Generalized Anxiety Disorder Scale-7 (GAD-7; Minimum value = 0; Maximum value = 3. Higher values mean worse outcome) to assess for any changes in symptoms of anxiety. |
At baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course |
|
Secondary |
Change in somatic symptoms |
All patients included in the study will be asked to complete the Somatic Symptom Scale-9 (SSS-8; Minimum value = 0; Maximum value = 4. Higher value mean worse outcome) to assess for any changes in somatic symptom burden |
At baseline (before first session), at session 6 (last ordinary session, 5-7 weeks after baseline), at session 7 (2 months after last ordinary session) and 6 months after completing the course |
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