Smartphone-Based Phenotyping of Suicidality and Interpersonal Risk Factors – An Ecological Momentary Assessment Study

Smartphone-Based Phenotyping of Suicidality and Interpersonal Risk Factors – An Ecological Momentary Assessment Study - SMART-SI

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00037153

Enrollment

100

Registered

2025-06-25

Start date

2022-09-01

Completion date

Unknown

Last updated

2025-10-06

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

Conditions

F33.1 F33.2 F34.1

Interventions

Group 1: SMART-SI investigates the dynamic relationship between interpersonal risk factors and suicidality in individuals with chronic depression using EMA and mobile sensing, compared to control part

Eligibility

Sex/Gender

All

Age

18 Years to 70 Years

Inclusion criteria

Inclusion criteria: Included are individuals who - meet the diagnostic criteria for chronic depression according to DSM-5, - give their informed consent, - have sufficient knowledge of the German language, - are being treated at the Department of Psychiatry and Psychotherapy of the LMU Munich.

Exclusion criteria

Exclusion criteria: Excluded are individuals who - do not meet the diagnostic criteria for chronic depression according to DSM-5, - are unable to provide informed consent, - do not have sufficient knowledge of the German language to answer the questions, - report severe somatic complaints, - are unable to receive treatment at the Department of Psychiatry and Psychotherapy of the LMU Munich, - or exhibit cognitive impairments that make participation in the study impossible.

Design outcomes

Primary

Measure	Time frame
Suicidal ideations and behaviors (measured using Ecological Momentary Assessment and the Columbia-Suicide Severity Rating Scale)	—

Secondary

Measure	Time frame
- Loneliness (measured using Ecological Momentary Assessment and the UCLA Loneliness Scale) - Social contacts (measured using Ecological Momentary Assessment and the Social Network Index) - Negative affect (measured using Ecological Momentary Assessment, the Beck Depression Inventory, and the Montgomery-Åsberg Depression Rating Scale) - The presence of childhood and adolescent maltreatment (Childhood Trauma Questionnaire) - The use of digital communication (Questionnaire on the Use of Digital Communication), as well as - Data passively collected via smartphone, specifically: - Calls: number, duration, and direction (e.g., 2 calls to the same phone number vs. 2 different numbers; each number is assigned a randomly generated numerical code, without storing the actual phone number) - SMS: number, length, and direction (analogous to calls) - Screen time - Internet usage (data volume used) - Usage times of communication and social media applications: WhatsApp, Instagram, Twitter, TikTok, Facebook - Activity (step counter, accelerometer, GPS) - Optional: Laboratory values related to inflammation (IL-1, IL-6, TNF-a, CRP), BDNF, and oxytocin, as well as the menstrual cycle day for female participants - Participant experience with the EMA methodology (EMA items on participation experience; optionally: semi-structured interview)	—

Measure

Time frame

- Loneliness (measured using Ecological Momentary Assessment and the UCLA Loneliness Scale) - Social contacts (measured using Ecological Momentary Assessment and the Social Network Index) - Negative affect (measured using Ecological Momentary Assessment, the Beck Depression Inventory, and the Montgomery-Åsberg Depression Rating Scale) - The presence of childhood and adolescent maltreatment (Childhood Trauma Questionnaire) - The use of digital communication (Questionnaire on the Use of Digital Communication), as well as - Data passively collected via smartphone, specifically: - Calls: number, duration, and direction (e.g., 2 calls to the same phone number vs. 2 different numbers; each number is assigned a randomly generated numerical code, without storing the actual phone number) - SMS: number, length, and direction (analogous to calls) - Screen time - Internet usage (data volume used) - Usage times of communication and social media applications: WhatsApp, Instagram, Twitter, TikTok, Facebook - Activity (step counter, accelerometer, GPS) - Optional: Laboratory values related to inflammation (IL-1, IL-6, TNF-a, CRP), BDNF, and oxytocin, as well as the menstrual cycle day for female participants - Participant experience with the EMA methodology (EMA items on participation experience; optionally: semi-structured interview)

—

Countries

Germany

Contacts

Public ContactJohannes Wolf

Klinik für Psychiatri und Psychotherapie, LMU Klinikum München

johannes.wolf@med.uni-muenchen.de+49 89 4400 55323

Outcome results

None listed

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