suicide
Conditions
Interventions
None listed
Sponsors
Universiteit Leiden
Eligibility
Age
18 Years to 64 Years
Inclusion criteria
Inclusion criteria: 1. A history of a suicide attempt or severe ideation in the past 12 months (>=3 Columbia-Suicide Severity Rating Scale, or >=2 if symptoms present in the past 2 months). 2. Aged 18 years or older. 3. Adequate proficiency of both written and spoken Dutch or English. 4. Possession/use of an Android or iOS compatible mobile phone. 5. Willingness to participate in a 1-year longitudinal study.
Exclusion criteria
Exclusion criteria: 1. Current diagnosis of Bipolar disorder, a Psychotic disorder, or (severe) Substance dependence (DSM-5 criteria). 2. Intellectual impairment, dementia or a physical impairment that may prevent the participant from adequately following the study procedures. Participants in need of immediate support or treatment will be referred before enrolment in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome measure is self-reported suicidal ideation, as measured with EMA. The primary predictors include self-reported sleep parameters (sleep quality/quantity), mood (positive/negative), cognitions (hopelessness, burdensomeness, loneliness, optimism), stressful events, social interaction (/isolation), and substance use/coping strategies, as measured with EMA; and objective sleep parameters (incl. total sleep time, sleep onset latency, sleep efficiency, wake after sleep onset), as measured with actigraphy. | — |
Secondary
| Measure | Time frame |
|---|---|
| The following self report measures will be assessed at the beginning and at the end of the cohort study. 1. suicidal ideation 2. depressive symptoms 3. anxiety symptoms 4. quality of life 5. sleep problems 6. cognitive reactivity 7. anger expression 8. borderline personality traits Acceptability of EMA will also be tested: agreement to participate, compliance rates, and attrition (operationalized as the number and percentage of individuals who agree to participate in the study/ valid EMA observations/ individuals who complete the study) and study burden questions (self-report). | — |
Countries
Netherlands
Outcome results
None listed