Open trial of an internet-based self-help intervention for loneliness

Open trial of an internet-based self-help intervention for loneliness - SOLUS-OT

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00038589

Enrollment

150

Registered

2025-12-02

Start date

2026-02-16

Completion date

Unknown

Last updated

2026-03-30

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

Conditions

Loneliness

Interventions

Group 1: Internet-based self-help intervention (SOLUS-D with automated messages)

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: German language skills Internet access

Exclusion criteria

Exclusion criteria: none

Design outcomes

Primary

Measure	Time frame
Loneliness, 10 weeks, UCLA Loneliness Scale (UCLA-9)	—

Secondary

Measure	Time frame
- Loneliness (direct questions) [10 weeks] (and after 6 months follow-up) - Satisfaction with Life (Satisfaction with Life Scale; SWLS) [10 weeks] (and after 6 months follow-up) - Depressive symptoms (Patient Health Questionnaire, PHQ-9) [10 weeks] (and after 6 months follow-up) - Social anxiety (Social Interaction Anxiety Scale, Social Phobia Scale; SIAS-6/SPS-6) [10 weeks] (and after 6 months follow-up) - Social isolation (Social Network Index, SNI) [10 weeks] (and after 6 months follow-up) - Sensitivity to rejection (A-RSQ) [10 weeks] (and after 6 months follow-up) - Maladaptive personality traits (PID5-BF+) [10 weeks] (and after 6 months follow-up) - Epistemic trust (ETMCQ) - Negative effects (INEP adapted) [10 weeks] - User satisfaction (ZUF-9) [10 weeks] - Use of the intervention	—

Measure

Time frame

- Loneliness (direct questions) [10 weeks] (and after 6 months follow-up) - Satisfaction with Life (Satisfaction with Life Scale; SWLS) [10 weeks] (and after 6 months follow-up) - Depressive symptoms (Patient Health Questionnaire, PHQ-9) [10 weeks] (and after 6 months follow-up) - Social anxiety (Social Interaction Anxiety Scale, Social Phobia Scale; SIAS-6/SPS-6) [10 weeks] (and after 6 months follow-up) - Social isolation (Social Network Index, SNI) [10 weeks] (and after 6 months follow-up) - Sensitivity to rejection (A-RSQ) [10 weeks] (and after 6 months follow-up) - Maladaptive personality traits (PID5-BF+) [10 weeks] (and after 6 months follow-up) - Epistemic trust (ETMCQ) - Negative effects (INEP adapted) [10 weeks] - User satisfaction (ZUF-9) [10 weeks] - Use of the intervention

—

Countries

Austria, Germany, Liechtenstein, Switzerland

Contacts

Public ContactTobias Krieger

Universität Bern

tobias.krieger@unibe.ch+41 31 684 54 06

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Apr 4, 2026