Factors associated with suicide: Case-control study in South Tyrol

Area of Science:

• Psychiatry and Psychology
• Public Health

Background:

• Suicide risk is multifactorial, extending beyond psychiatric illness.
• Comprehensive risk assessment is crucial for suicide prevention.
• Differentiating non-diagnostic risk factors is essential for targeted interventions.

Purpose of the Study:

• To identify and compare non-diagnostic risk factors in individuals who died by suicide versus psychiatric patients without suicidal behavior.
• To inform broader suicide risk assessment strategies.

Main Methods:

• Pilot case-control study comparing 131 suicide cases with 131 matched psychiatric controls.
• Psychological autopsy methods were employed to assess demographic, social, and clinical factors.
• Bivariate conditional odds risk comparisons and conditional regression modeling were utilized, controlling for ethnicity.

Main Results:

• Multivariable regression identified significant risk factors for suicide: family history of suicide/attempt, recent interpersonal stressors, childhood trauma, lack of recent clinician contacts, previous suicide attempt, and non-Italian ethnicity.
• No significant differences were found in education, marital status, living situation, employment, or psychiatric/substance abuse diagnoses between groups.

Conclusions:

• Both early life (childhood trauma, family history) and recent factors (interpersonal distress, lack of clinical care, ethnicity) are associated with suicide.
• These findings highlight the importance of considering a wide range of psychosocial and demographic factors in suicide risk assessment.