J Korean Neuropsychiatr Assoc.  2020 Aug;59(3):243-249. 10.4306/jknpa.2020.59.3.243.

Suicidal Risk in Depressed Patients with the Treatment by Antipsychotics and Antidepressant Compared to Antidepressant Monotherapy: A Pilot Study Using Psychiatric Common Data Model

  • 1Department of Psychiatry, Ajou University School of Medicine, Suwon, Korea
  • 2Department of Biomedical Informatics, Ajou University School of Medicine, Suwon, Korea
  • 3Office of Biostatistics, Medical Research Collaborating Center, Ajou Research Institute for Innovative Medicine, Ajou University Medical Center, Suwon, Korea


This study examined the effects of reducing suicide attempts when taking antipsychotics in combination with antidepressants in depressive patients.
Using a common data model of electronic medical records at a university medical center in South Korea, the study populations were extracted if the depressive patients were treated either with antidepressants only or along with antipsychotics. The suicidal risks were compared with the Kaplan-Meier plot and log-rank test, and the risk factors were accessed using the Cox proportional hazard model.
All demographic characteristics were similar in the monotherapy group taking only antidepressants and the combination therapy group taking antipsychotics with antidepressants, except for the smoking characteristic (p=0.023). The combination therapy group showed a lower suicidal risk [hazard ratio=0.58, 95% confidence interval (CI)=0.282–1.190] compared to the monotherapy group, which was not significant (p=0.138).
The combination therapy had no beneficial effects on reducing the suicidal risk in patients with depressive symptoms. This study is meaningful in that it is the first attempt to explore a psychiatric behavior/symptom using real-world data based on a common data model of general electronic medical records as well as narrative textual data.


Suicide; Antipsychotics; Common data model
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