A randomized controlled study to evaluate a digital intervention for treating anxiety disorders in adults

ISRCTN ISRCTN12481277
DOI https://doi.org/10.1186/ISRCTN12481277
Secondary identifying numbers EX-M11ANX-CIP Version 1.1
Submission date
06/07/2023
Registration date
06/07/2023
Last edited
07/03/2025
Recruitment status
Stopped
Overall study status
Stopped
Condition category
Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
Patients in need of psychotherapy typically have to wait a long time to start treatment. Long waiting times contribute to the chronification (transition from acute to chronic) of mental disorders if no treatment is provided during this time. This highlights the importance of providing patients with adequate treatment during this time so that patients have reduced symptoms, feel supported, stay on the waiting list, and eventually receive the psychotherapy they need. To address this need, the digital intervention 'elona explore' was created as a digital tool for treatment for patients during the waiting period.
The aim of this study is to evaluate the effectiveness and safety of the digital intervention elona explore in addition to treatment-as-usual (TAU) compared to TAU alone (i.e. waiting list for outpatient psychotherapy). Within TAU, patients are not restricted in the use of medical or psychological services that are available as usual care.

Who can participate?
Patients aged 18 - 65 years and diagnosed with an anxiety disorder (agoraphobia with or without panic disorder, social anxiety disorder, panic disorder)

What does the study involve?
Participants will be enrolled in the study after their first psychotherapeutic consultation hour(s) at the investigation sites, which will clarify the indication for psychotherapy. Patients will be diagnosed during the consultation hour(s), as decided by the treating psychotherapist on the basis of the Mini-DIPS. If the patient cannot be offered an immediate psychotherapy place, they will be referred to the waiting list of the investigation site and invited to the study if they have also been diagnosed as suitable for this study. If regular psychotherapy can be offered, they will not be considered for this study.
If a sufficient number of patients cannot be recruited from the waiting list of the investigation site, further potential participants will be invited to the consultation hour(s) via online and offline advertising. The same diagnostic assessment procedure (by the treating psychotherapist based on the Mini-DIPS) and recruitment procedure will apply to these participants.
Enrolment will take place after patients have been informed about the study and have signed the informed consent form at the study sites. After agreeing to take part in the study, participants will be randomized to one of the study conditions (intervention or control).
Participants assigned to the intervention group (IG) will receive access to the elona explore digital intervention in addition to TAU for a period of 10 weeks, while participants assigned to the control group (CG) will only receive TAU and will not use elona explore during the same time period.

What are the possible benefits and risks of participating?
Participants in the IG may benefit from improvements in their symptoms of anxiety and depression, improvements in disorder-specific symptoms of panic and agoraphobia or social anxiety, quality of life, social/occupational functioning, perceived self-efficacy, and mental health literacy compared to the CG. Patients may experience symptom worsening, perceived dependence on the digital intervention, anxiety, or confusion due to potential device malfunction or user error. The level of potential risk is judged to be minimal. Therefore, the expected benefits clearly outweigh the expected risks.

Where is the study run from?
Elona Health GmbH

When is the study starting and how long is it expected to run for?
February 2023 to June 2024

Who is funding the study?
Elona Health GmbH (Germany)

Who is the main contact?
Ece Atik, ece@elona.health

Contact information

Ms Ece Atik
Scientific

Elona Health GmbH
Schirmerstraße 61
Düsseldorf
40211
Germany

ORCiD logoORCID ID 0000-0002-1361-6301
Phone +49 (0)211 82268660
Email ece@elona.health

Study information

Study designMulticenter interventional randomized controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)GP practice, Other therapist office
Study typeTreatment, Safety, Efficacy
Participant information sheet Not available in web format, please use contact details to request a participant information sheet
Scientific titleA randomized controlled study to evaluate a digital intervention for the treatment of anxiety disorders in adults
Study hypothesisEffectiveness hypotheses:

Primary hypothesis:
P1: Patients receiving access to elona explore in addition to TAU experience greater improvements in symptoms of anxiety (assessed with the Beck Anxiety Inventory (BAI)) compared to patients receiving TAU over 10 weeks of treatment.

Secondary hypotheses:
S1: Patients receiving access to elona explore in addition to TAU experience greater improvements in symptoms of depression (assessed with the Patient Health Questionnaire-9 (PHQ-9)) compared to patients receiving TAU over 10 weeks of treatment.
S2a (only patients with F40.00, F40.01, or F41.0): Patients receiving access to elona explore in addition to the TAU experience greater improvements in panic and agoraphobia symptoms (assessed with the Panic and Agoraphobia Scale (PAS)) compared to patients receiving TAU over 10 weeks of treatment.
S2b (only patients with F40.1): Patients receiving access to elona explore in addition to the TAU experience greater improvements in symptoms of social anxiety (assessed with the Liebowitz Social Anxiety Scale (LSAS)) compared to patients receiving TAU over 10 weeks of treatment.
S3: Patients receiving access to elona explore in addition to TAU experience greater improvements in their quality of life (assessed with the World Health Organization-Brief Quality of Life Scale (WHOQOL-BREF) - Psychological health subscale) compared to patients receiving TAU over 10 weeks of treatment.
S4: Patients receiving access to elona explore in addition to TAU experience greater improvements in work and social adjustment (assessed with the Work and Social Adjustment Scale (WSAS)) compared to patients receiving TAU over 10 weeks of treatment.
S5: Patients receiving access to elona explore in addition to TAU experience greater improvements in their general self-efficacy (assessed with the General Self Efficacy Scale (GSE)) compared to patients receiving TAU over 10 weeks of treatment.
S6: Patients receiving access to elona explore in addition to TAU experience greater improvements in their mental health literacy (assessed with the Mental Health Literacy Scale (MHLS)) compared to patients receiving TAU over 10 weeks of treatment.

Additionally, the proportion of patients who demonstrate a clinically significant improvement in the BAI will be compared between the two intervention conditions.

Safety hypothesis:
P1: Patients receiving access to elona explore in addition to the TAU do not experience a higher number of or more serious adverse events than TAU.

Mixed linear models with the intention-to-treat (ITT) data set will be used as the primary method of data analysis. For the missing values, multiple imputation will be used. In addition, per-protocol (PP) analyses will be performed as an additional sensitivity analysis. Primary and secondary hypotheses will be tested in a fixed sequence procedure (hierarchical testing), where they will be tested in the predefined order until the first non-significant result.
Ethics approval(s)

Approved 16/05/2023, Ethics Committee University of Mannheim (Ethikkommission Schloss, Mannheim, 68161, Germany; N/A; ethik@mail.uni-mannheim.de), ref: EK Mannheim 17/2023

ConditionTreatment of anxiety disorders in patients on the waiting list for the outpatient psychotherapeutic treatment
Interventionelona explore is a digital health application that provides patients with mental health disorders (depression, anxiety/panic disorders, OCD, adjustment disorders, and somatoform disorders) with interventions, techniques, helpful activities, exercises, and psychoeducational resources for the period they are on the waiting list for outpatient psychotherapy. By retrieving regular check-ups, elona explore responds individually to patients’ mood records and adjusts the content accordingly. The application is intended for independent use by the patient and to assist in the self-management of symptoms of the patient’s mental disorder. The treatment elements of elona explore are in line with current recommendations for the psychotherapeutic treatment of common mental disorders.

To test the effectiveness and safety of elona explore, a randomized controlled trial (RCT) with patients who are on the waiting list for outpatient psychotherapy with a clinical diagnosis of an anxiety disorder (including F40.00, F40.01, F40.1, and F41.0 based on ICD-10 criteria) is planned.

The RCT comprises two arms. Randomization will be achieved 1:1 and stratified according to the specific anxiety disorder group (Group 1: F40.00, F40.01, F41.0, and Group 2: F40.1). Participants assigned to the IG will receive access to the elona explore digital application in addition to the treatment as usual (TAU) for 10 weeks. Within TAU, patients are not restricted in the use of medical or psychological services that are available as usual care. The CG will receive only TAU for 10 weeks. The CG will receive access to the elona explore application after the study period. For evaluating the primary and secondary objectives of this study (see below) a 2 (group: IG, CG) x 2 (time: pre, post) design will be used.
Intervention typeDevice
Pharmaceutical study type(s)Not Applicable
PhaseNot Applicable
Drug / device / biological / vaccine name(s)elona explore
Primary outcome measureAssessments will take place at baseline (T0), 5 weeks after treatment start (T1), and 10 weeks after treatment start (T2):

Primary effectiveness objective:
Symptoms of anxiety measured using BAI

Primary safety objective:
Number and seriousness of adverse events measured using patient records
Secondary outcome measuresAssessments will take place at baseline (T0), 5 weeks after treatment start (T1), and 10 weeks after treatment start (T2):
1. Symptoms of depression measured with the PHQ-9
2. Symptoms of panic and agoraphobia or social anxiety measured with the PAS or the LSAS
3. Psychological health measured with the psychological health subscale of the WHOQOL-BREF
4. Work and social maladjustment measured with the WSAS
5. Self-efficacy measured with the GSE
6. Mental health literacy measured with the MHLS
Overall study start date01/02/2023
Overall study end date30/06/2024
Reason abandoned (if study stopped)Lack of funding/sponsorship

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
Upper age limit65 Years
SexBoth
Target number of participants158 participants (79 in each group)
Participant inclusion criteriaAll subjects must have been diagnosed with one of the following ICD-10 diagnoses:
F40.00: Agoraphobia: Without history of panic disorder
F40.01: Agoraphobia: With panic disorder
F40.1: Social phobia
F41.0: Panic disorder (episodic paroxysmal anxiety)

Subjects further need to:
1. Be at least 18 years old
2. Possess sufficient German language skills (in writing and reading)
3. Possess a smartphone (iOS or Android operating system) with internet access
4. Provide signed and dated informed consent and be willing to comply with the protocol
Participant exclusion criteriaAll subjects without the inclusion ICD-10 diagnosis criteria, as well as subjects with the following ICD-10 diagnoses, are excluded:
F00-F09: Organic, including symptomatic, mental disorders
F10-F19 Mental and behavioural disorders due to psychoactive substance use (except F17.1, F17.2, F17.3)
F20-F29: Schizophrenia, schizotypal and delusional disorders
F30: Manic episode
F31.0, F31.1, F31.2, F31.5, F31.6, F31.8, F31.9: Bipolar disorder current hypomanic or manic episode
F32.3: Severe depressive episode with psychotic symptoms
F33.3: Recurrent depressive disorder, current episode severe with psychotic symptoms

1. Subjects with acute suicidality (assessed via suicidality screening of the mini-DIPS at the initial screening)
2. Subjects under the age of 18, subjects without any access to a smartphone (iOS or Android operating system) with internet access
3. Subjects without German language proficiency

If a subject is currently enrolled or is planning to participate in a potentially confounding drug or device trial during the study, enrollment into this study needs to be pre-approved by the principal investigator.
Recruitment start date12/07/2023
Recruitment end date30/03/2024

Locations

Countries of recruitment

  • Germany

Study participating centres

Psychotherapie an der Königsallee Dr. Peter Neudeck
Grünstraße 23
Düsseldorf
40212
Germany
Praxis am Volksgarten Dr. Peter Neudeck
Volksgartenstraße 36
Köln
50677
Germany
AVT GmbH Akademie für Verhaltenstherapie
Venloer Str 47-53
Köln
50672
Germany

Sponsor information

Elona Health GmbH
Industry

Schirmerstraße 61
Düsseldorf
40211
Germany

Phone +49 (0)211 82 26 86 60
Email info@elona.health
Website https://www.elona.health/

Funders

Funder type

Industry

Elona Health GmbH

No information available

Results and Publications

Intention to publish date01/10/2024
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
Publication and dissemination planThe results are planned to be published in a peer-review academic journal after the end of the trial.
IPD sharing planParticipant-level data (anonymized data) is available upon request from Ece Atik (ece@elona.health).

Editorial Notes

07/03/2025: The study has been stopped due to a lack of resources.
06/07/2023: Study's existence confirmed by the Ethics Committee University of Mannheim.