Clinical Trial Details
— Status: Completed
Administrative data
NCT number |
NCT02678702 |
Other study ID # |
109566 |
Secondary ID |
|
Status |
Completed |
Phase |
N/A
|
First received |
|
Last updated |
|
Start date |
August 2015 |
Est. completion date |
April 2020 |
Study information
Verified date |
November 2016 |
Source |
University of Aarhus |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
Participants (N=47) are patients with major depression. Participants are assessed with
clinical interview, polysomnographic evaluation and screening with Insomnia Severity Index
(ISI), Dysfunctional Beliefs About Sleep-scale (DBAS), HDRS, MINI and Sleep Diary pre and
post treatment.
Participants are randomly assigned to either treatment as usual or CBT-I. The latter receives
individual as well as group therapy with CBT-I during 6 sessions.
Post-treatment: The investigators will compare changes in sleep diary parameters, HamD17, ISI
and DBAS. Data are analyzed by using Chi-square test, Wilcoxon-Mann-Whitney U-test and ANOVA.
STATA is used for data-processing.
Description:
Participants are included from an Outpatient clinic and GPs in Aarhus. Initial assessment is
carried out through a personal interview with the participants who are screened with Hamilton
Depression Rating Scale, MINI (Mini International Neuropsychiatric Interview) and instructed
to fill out an ISI-form (Insomnia Severity Index (Morin, 1993)), DBAS-16, Dysfunctional
Beliefs and Attitudes about Sleep Scale, (Morin, 1993) and to keep a sleep diary for two
weeks.
All participants go through an objective examination of their sleep through a polysomnography
measuring brain activity (EEG), eye activity (EOG), muscular activity (EMG), heart rate,
respiration a.o. during sleep. This happens on an outpatient basis with assistance of an
experienced sleep technician. Data is analysed by an experienced sleep physician.
After assessment participants are randomized receiving either treatment as usual or CBT-I.
CBT-I includes: Sleep Restriction Therapy, Stimulus Control Therapy, Relaxation Training,
Identification and analyzation of negative thoughts and cognitive distortion, Modification of
negative thoughts about sleep, Reattribution, Implementation of "Scheduled worry", Relapse
prevention.
Post-treatment participants undergo polysomnographic evaluation and screening with HDRS, ISI
and DBAS. Again they keep a sleep diary.
Categorical variables are analysed with a chi-square test. Ordinal variables are analysed
with non-parametrical tests (Wilcoxon-Mann-Whitney U-test) and variance analysis (ANOVA).
Possible confounders as differences in demographics or other treatment, which may affect the
target outcome, will be analysed in part with non-parametrical tests and in part in a
logistic regression analysis. As secondary effect targets total sleep time and changes in
polysomnography as well as changes in HDRS, dysfunctional assumptions on sleep and life
quality are measured. STATA is used for data processing with SPSS as a possible alternative
solution.