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Comparison of Suicide Risk by Mental Illness: a Retrospective Review of 14-Year Electronic Medical Records

Journal of Korean Medical Science 2020년 35권 47호 p.402 ~ 402
송유진, 이상진, 이현주, 김민지, 신다운, 안용민,
소속 상세정보
송유진 ( Song Yoo-Jin ) - Seoul National University Hospital Department of Neuropsychiatry
이상진 ( Rhee Sang-Jin ) - Seoul National University Hospital Department of Neuropsychiatry
이현주 ( Lee Hyun-Ju ) - Seoul National University Hospital Department of Neuropsychiatry
김민지 ( Kim Min-Ji ) - Seoul National University Hospital Department of Neuropsychiatry
신다운 ( Shin Da-Un ) - Seoul National University Hospital Department of Neuropsychiatry
안용민 ( Ahn Yong-Min ) - Seoul National University Hospital Department of Neuropsychiatry

Abstract


Background: Korea is one of the countries with the highest rate of suicide, while suicidality is known to be closely related to mental illnesses. The study aimed to evaluate the suicide rates in psychiatric patients, to compare it to that of the general population, and to investigate the differences among psychiatric diagnoses and comorbidities.

Methods: Medical records and mortality statistics of psychiatric patients at Seoul National University Hospital from 2003 to 2017 were reviewed. The standardized mortality ratio (SMR) for suicide was calculated to compare the psychiatric patients with the general population. The diagnosis-specific standardized mortality rate and hazard ratio (HR) were adjusted by age, sex, and psychiatric comorbidity (i.e., personality disorder and/or pain disorder).

Results: A total of 40,692 survivors or non-suicidal deaths and 597 suicidal death were included. The suicide rate among psychiatric patients was 5.13-fold higher than that of the general population. Psychotic disorder had the highest SMR (13.03; 95% confidence interval [CI], 11.23?15.03), followed by bipolar disorder (10.26; 95% CI, 7.97?13.00) and substance-related disorder (6.78; 95% CI, 4.14?10.47). In survival analysis, psychotic disorder had the highest HR (4.16; 95% CI, 2.86?6.05), which was further increased with younger age, male sex, and comorbidity of personality disorder.

Conclusion: All psychiatric patients are at a higher risk of suicide compared to the general population, and the risk is highest for those diagnosed with psychotic disorder.

키워드

Suicide; Mental Disorders; Psychiatric Diagnosis; Epidemiology

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