Identifying bridge pathways between eating disorder symptoms and suicidal ideation across three samples

Area of Science:

• Psychiatry
• Clinical Psychology
• Network Analysis

Background:

• Eating disorders (ED) are associated with increased rates of suicidal thoughts and behaviors.
• Understanding the relationship between ED symptoms and suicidality is crucial for effective intervention.
• Network analysis offers a method to explore symptom interconnections.

Purpose of the Study:

• To identify bridging symptoms connecting eating disorders and suicidality using network analysis.
• To determine central symptoms within the network across different clinical groups.
• To investigate potential shared mechanisms linking EDs and suicidality.

Main Methods:

• Network analysis was applied to three adult groups: psychiatric outpatients without EDs, psychiatric outpatients with a history of suicide attempts, and individuals with current EDs.
• Symptoms were jointly estimated across these groups to identify commonalities and differences.
• Centrality and bridge symptoms were analyzed within the estimated networks.

Main Results:

• Interoceptive deficits and pain tolerance were identified as bridge symptoms in the Suicide Attempt and ED groups.
• Feeling inadequate emerged as a bridge symptom in the Clinical Outpatient group.
• Suicidal ideation and feeling inadequate were central symptoms across all groups.
• Interoceptive impairment may be a shared problem linking ED symptoms and suicidality.

Conclusions:

• Eating disorders and suicidality may influence each other bidirectionally.
• Shared mechanisms, such as interoceptive impairment, and direct pathways, like suicidal ideation's connection to ED symptoms, may underlie this relationship.
• Further prospective research is needed to confirm these bidirectional influences.