Depressive Disorders
Conditions
Interventions
Group 1: IBI (Internet-based Intervention) in standard framing + no contact
Group 2: IBI in standard framing + expectation-focused contact
Group 3: IBI in standard framing + supportive contact
Group 4
Sponsors
Freie Universität Berlin
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: - Self-reported primary depression defined as reaching a cut-off of =14 on the BDI-II (Kuehner et al., 2023) - except for benzodiazepines, concordant medication is allowed if kept constant for the four weeks before and until the end of this trial - fluency in German language - Internet access - informed consent
Exclusion criteria
Exclusion criteria: - suicidality (>1 on the BDI-II suicidal ideation item) - currently in psychotherapy - benzodiazepine intake
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| BDI-II (Depressive Symptoms): t0, t3, t6, t7 | — |
Secondary
| Measure | Time frame |
|---|---|
| Assessments are scheduled at the following time points: baseline (t0), week 1 (t1), week 2 (t2), week 3 (t3), week 4 (t4), week 5 (t5), week 6 (t6), and follow-up at week 12 (t7). The specific time points at which each measure was administered are detailed below. Predictors and In-treatment variables: Sociodemographics: t0 GEEE (Prior Experiences): t0 PSS-10 (Subjective Stress): t0 SSAS (Somatosensory Amplification): t0 BFI-10 (Personality): t0 TEX-Q (Expectations): t0 Desire for Relief (self-drafted): t0 UTAUT (Acceptance): t0 GEEE – Expectations: t1, t2, t3, t4, t5, t6 ASKU (Self-Efficacy): t1, t2, t3, t4, t5, t6 Session Fit (self-drafted): t1, t2, t3, t4, t5, t6 WAI-I (Working Alliance): t1, t2, t3, t4, t5, t6 Subjective Adherence (self-drafted): t1, t2, t3, t4, t5, t6 SCM (Warmth and Competence of Telephone Contact): after telephone contact (approx. corresponding to t3) SCM (Warmth and Competence of App): t3, t6 Secondary Outcomes: PHQ-9 (Depression): t0, t1, t2, t3, t4, t5, t6, t7 STADI (Anxiety and Depression State and Trait): t0, t6 PDI (Disability): t0, t6 WSAS (Functioning): t0, t6, t7 MRS (Menopausal Symptoms): t0, t6, t7 GSDS (Depression gender-sensitive): t0, t6 GAS (Goal Attainment): t6 INEP-ON (Negative Effects): t6 RAD & SUS (Usability): t6 CSQ-8 (Satisfaction with Treatment): t6 GEEE (Treatment Effects): t6, t7 | — |
Countries
Germany
Contacts
Public ContactChristine Knaevelsrud
Freie Universität Berlin
Outcome results
None listed