Intersession Processes in Psychotherapeutic Treatments Using an Ecological Momentary Assessment Approach (ISA-Bell)
NCT ID: NCT05553197
Last Updated: 2025-06-25
Study Results
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Basic Information
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RECRUITING
NA
84 participants
INTERVENTIONAL
2022-11-01
2026-05-31
Brief Summary
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Detailed Description
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The investigators are interested in the potential benefits of a monitoring intervention as an add-on to face-to-face Cognitive Behavioral Therapy (CBT) for depression. Therefore, the investigators will conduct a randomised trial to investigate the effects of a monitoring intervention consisting of Ecological Momentary Assessment (EMA) of symptoms and inter-session processes via mobile phones. Twenty sessions of face-to-face CBT + EMA will be compared to twenty sessions of face-to-face CBT (treatment as usual, TAU). Participants in the CBT + EMA group will be asked to answer monitoring questions twice daily for two four-week blocks during the CBT treatment. A total of 84 participants with mild to moderate depression will be randomized. Of these, 48 participants will be randomized to CBT + EMA and 36 participants will be randomized to TAU. The primary outcome of interest is change in the Patient Health Questionnaire (PHQ-9) score at four-month follow-up assessment.
Throughout the study, there will be five assessment timepoints: Baseline (before the first therapy session), four weeks after the fourth therapy session, four weeks after the twelfth therapy session, after the last session (post-treatment) and the 4-month follow-up (four months after the last therapy session).
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
NONE
Study Groups
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Cognitive Behavior Therapy + Ecological Momentary Assessment (CBT + EMA)
Cognitive Behavior Therapy + Ecological Momentary Assessment
Cognitive Behavioural Therapy (CBT)
20 sessions of face-to-face, individual CBT
Ecological Momentary Assessment (EMA)
Two four-week blocks of twice daily ecological momentary assessment (EMA) of symptoms and inter-session processes
Treatment as Usual (TAU)
Cognitive Behavioural Therapy (Treatment as Usual)
Cognitive Behavioural Therapy (CBT)
20 sessions of face-to-face, individual CBT
Interventions
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Cognitive Behavioural Therapy (CBT)
20 sessions of face-to-face, individual CBT
Ecological Momentary Assessment (EMA)
Two four-week blocks of twice daily ecological momentary assessment (EMA) of symptoms and inter-session processes
Eligibility Criteria
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Inclusion Criteria
* PHQ-9 ≥ 5
* Possession of smartphone with internet access
* Signed informed consent
Exclusion Criteria
* Acute addiction (F10 - F19)
* Dysthymia (F34.1), postpartum depression, or severe depression (F32.3; F33.3)
* PHQ-9 \> 20
* Depression not main mental health concern
* Planned onset or planned change in antidepressant medication
* History of psychotic symptoms, bipolar disorder, personality disorders, or organic brain disorders
* Cognitive impairment or physical disability that would hinder psychotherapy or the use of a smartphone
18 Years
ALL
No
Sponsors
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Universität Tübingen
OTHER
Birgit Watzke
OTHER
Responsible Party
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Birgit Watzke
Full Professor
Principal Investigators
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Birgit Watzke, PhD
Role: PRINCIPAL_INVESTIGATOR
University of Zurich
Locations
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Psychotherapeutisches Zentrum Universität Zürich
Zurich, Canton of Zurich, Switzerland
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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10001C_200760
Identifier Type: -
Identifier Source: org_study_id
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