Related Experiment Video
Updated: Feb 5, 2026

Assessing Dominant-Submissive Behavior in Adult Rats Following Traumatic Brain Injury
Published on: December 16, 2022
The association between different traumatic life events and suicidality.
Hildur G Ásgeirsdóttir1, Unnur A Valdimarsdóttir1,2,3, Þórdís K Þorsteinsdóttir4,5
1Centre of Public Health Sciences, Faculty of Medicine, University of Iceland, Reykjavik, Iceland.
Traumatic life events significantly increase suicidality risk, particularly interpersonal trauma in men. This study highlights the strong link between adverse life experiences and suicidal ideation across genders.
Area of Science:
- Psychiatry
- Epidemiology
- Trauma Studies
Background:
- Traumatic life events are linked to psychiatric disorders and suicidality.
- Understanding the specific associations between trauma types and suicidality is crucial for targeted interventions.
Purpose of the Study:
- To investigate the association between different types of traumatic life events and suicidality.
- To examine these associations by gender.
Main Methods:
- A web-based questionnaire assessed traumatic life events (Life Stressor Checklist - Revised) and suicidality (DSM-5 criteria) in women (n=689) and men (n=709).
- Poisson regression analysis was used to calculate relative risks (RRs), adjusted for demographic factors.
Main Results:
- The prevalence of lifetime traumatic events was high in both genders (76% women, 77% men).
- Overall, traumatic events were associated with suicidality (RR 2.05), with a stronger link in men (RR 3.14) than women (RR 1.45).
- Interpersonal trauma, childhood trauma, and sexual trauma showed increased suicidality likelihood, especially in men. Non-interpersonal trauma was linked to suicidality in men only.
Conclusions:
- Traumatic life events are significantly associated with suicidality, particularly in men.
- Interpersonal trauma demonstrated the strongest association with suicidality across both genders.
Related Concept Videos
Half-life of a Reaction
Characteristics of Life
The Angiosperm Life Cycle
The Tree of Life - Bacteria, Archaea, Eukaryotes
Association Areas of the Cortex
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Associative Learning
Classical conditioning, also known...

