Skip to content

Optimizing Psychotherapy for Anxiety Disorders

Optimizing Psychotherapy for Anxiety Disorders

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03945617
Acronym
OPTIMAX
Enrollment
200
Registered
2019-05-10
Start date
2018-01-01
Completion date
2023-12-31
Last updated
2019-05-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anxiety Disorders

Keywords

anxiety, cognitive behavior therapy, transdiagnostic treatment, prediction

Brief summary

Anxiety disorders are highly prevalent and are associated with a high burden of disease, costs and individual impairment worldwide. Psychotherapy, especially cognitive behavioral therapy (CBT), is the first line treatment for anxiety disorders. CBT is effective in modifying dysfunctional cognitions and reducing avoidance behavior, thus leading to a lasting reduction of symptoms. Even though CBT is generally effective, around 50% of patients do not benefit sufficiently from this treatment. The current study aims at optimizing the treatment of anxiety disorders by identifying predictors of treatment response. Multiple (neuro-)psychological, biological, genetic and behavioral variables will be combined into a comprehensive prediction model of treatment outcome. Knowledge on predictors can then be used to improve therapy on an individual patient level.

Interventions

BEHAVIORALUnified Treatment Protocol

The Unified Treatment Protocol (UP) is a transdiagnostic psychotherapeutic treatment manual for emotional disorders, that is based on CBT principles and focuses on changing dysfunctional emotion regulation.

Sponsors

Psychiatric University Hospital, Zurich
CollaboratorOTHER
Swiss National Science Foundation
CollaboratorOTHER
University of St.Gallen
CollaboratorOTHER
University of Zurich
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Masking description

Outcome assessors will be blinded regarding treatment allocation

Intervention model description

This is randomized controlled trial involving a before-after design with an intervention group that receives immediate access to treatment and a waitlist-control group.

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* aged between 18-65 years * one of the following primary axis I disorders according to the Diagnostic and Statistical Manual of Mental Disorders (DSM): Panic Disorder with or without Agoraphobia; Social Anxiety Disorder; Anxiety Disorder not otherwise specified, Adjustment Disorder with Anxiety, Adjustment Disorder with Mixed Anxiety and Depression; Specific Phobia; Generalized Anxiety Disorder * if on medication If on medication or in other types of treatments, patients must be willing to remain stable on their treatment for the duration of the acute phase/therapy of the study * not currently receiving other psychotherapeutic treatment for anxiety or another condition * fluent German * provision of written informed consent

Exclusion criteria

* concomitant psychotherapy * medical relative contraindications involve conditions that impede thorough exposure, e.g. cardiovascular diseases, autoimmune diseases or pregnancy * current or past schizophrenia, psychosis, or bipolar disorder * current suicidal ideation. * current substance/alcohol dependence or abuse * cluster A or B personality disorder * pregnancy (for women)

Design outcomes

Primary

MeasureTime frameDescription
Overall Anxiety Severity and Impairment Scalechange from T0 (entry to study), at mid-treatment (8 weeks after T0), change from T0 at post-treatment (16 weeks after T0), change from T0 at 6 months follow-up and change from T0 at one year post-treatmentself-report measure of anxiety symptom severity and impairment; range: 0-20, with higher values representing worse outcome
Hamilton Anxiety Rating Scalechange from T0 (entry to study) at mid-treatment (8 weeks after T0), change from T0 at post-treatment (after 16 weeks from T0), change from T0 at 6 months follow-up and change from T0 at one year from post-treatmentclinician rating of anxiety symptoms, range: 0-56, with higher values representing a worse outcome

Secondary

MeasureTime frameDescription
Beck Depression Inventorychange from T0 (entry to study), at mid-treatment (8 weeks after T0), change from T0 at post-treatment (16 weeks after T0), change from T0 at 6 months follow-up and change from T0 at one year post-treatmentself report measure of depression; range: 0-63, with higher values indicating worse outcome
World Health Organization-5 Wellbeing Indexchange from T0 (entry to study), at mid-treatment (8 weeks after T0), change from T0 at post-treatment (16 weeks after T0), change from T0 at 6 months follow-up and change from T0 at one year post-treatmentchange in well-being; range: 0-25, with higher values indicating a better outcome
Beck Anxiety Inventorychange from T0 (entry to study), at mid-treatment (8 weeks after T0), change from T0 at post-treatment (16 weeks after T0), change from T0 at 6 months follow-up and change from T0 at one year post-treatmentself-report in anxiety symptoms, range 0-63, with higher values representing worse outcome
Social Functioning Index (SFI)change from T0 (entry to study), at mid-treatment (8 weeks after T0), change from T0 at post-treatment (16 weeks after T0), change from T0 at 6 months follow-up and change from T0 at one year post-treatmentchange in social functioning; Subscales: work (range: 1-15) and leisure time (range: 1-30), with higher numbers indicating worse outcome
Hamilton Depression Scalechange from T0 (entry to study), at mid-treatment (8 weeks after T0), change from T0 at post-treatment (16 weeks after T0), change from T0 at 6 months follow-up and change from T0 at one year post-treatmentclinician rating of depressive symptoms; range: 0-66, with higher values representing worse outcome

Other

MeasureTime frameDescription
Test of self-conscious affectchange from T0 (entry to study), at mid-treatment (8 weeks after T0), change from T0 at post-treatment (16 weeks after T0), change from T0 at 6 months follow-up and change from T0 at one year post-treatmentself-report to index self-conscious affect; 3 subscales: shame self-talk, guilt self-talk, blaming others; each ranging from 0 to 55, with higher values indicating a worse outcome
Thought Control questionnairechange from T0 (entry to study) at mid-treatment (8 weeks after T0), change from T0 at post-treatment (16 weeks after T0), change from T0 at 6 months follow-up and change from T0 at one year post-treatmentself-report measure to assess worry and reappraisal as cognitive strategies/information processing; subscales worry (range: 1-24, with higher values indicating worse outcome) and reappraisal (range:1-24, with higher values representing better outcome) are reported

Countries

Switzerland

Contacts

Primary ContactBirgit Kleim, Prof. Dr.
b.kleim@psychologie.uzh.ch+41 (0)44 384 23 51
Backup ContactAva Schulz, Dr.
ava.schulz@uzh.ch+41(0)443891582

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 23, 2026