Journal of The Korean Society of Clinical Toxicology

Original Article

Demographic characteristics of patients admitted to the emergency department for intoxication and a time series analysis during the COVID-19 period: Bongmin Son, Nayoon Kang, Eunah Han, Gina Yu, Junho Cho, Jaiwoog Ko, Taeyoung Kong, Sung Phil Chung, Minhong Choa; J Korean Soc Clin Toxicol. 2023;21(2):92-107. Published online December 29, 2023; DOI: https://doi.org/10.22537/jksct.2023.00011

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Abstract PDF: Purpose: This study investigated the characteristics and treatment outcomes of patients who visited the emergency department due to intoxication and analyzed the impact of the coronavirus disease 2019 (COVID-19) pandemic on their visits.
Methods
A retrospective study was conducted using data from the National Emergency Department Information System (NEDIS) on patients who visited the emergency department due to intoxication between January 2014 and December 2020. In total, 277,791 patients were included in the study, and their demographic and clinical data were analyzed. A model was created from 2014 to 2019 and applied to 2020 (i.e., during the COVID-19 pandemic) to conduct a time series analysis distinguishing between unexpected accidents and suicide/self-harm among patients who visited the emergency department.
Results
The most common reason for visiting the emergency department was unintentional accidents (48.5%), followed by self-harm/suicide attempts (43.8%). Unexpected accident patients and self-harm/suicide patients showed statistically significant differences in terms of sex, age group, hospitalization rate, and mortality rate. The time series analysis showed a decrease in patients with unexpected accidents during the COVID-19 pandemic, but no change in patients with suicide/self-harm.
Conclusion
Depending on the intentionality of the intoxication, significant differences were found in the age group, the substance of intoxication, and the mortality rate. Therefore, future analyses of patients with intoxication should be stratified according to intentionality. In addition, the time series analysis of intentional self-harm/suicide did not show a decrease in 2010 in the number of patients, whereas a decrease was found for unintentional accidents.

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