Table 1. Diagnostic Classification of the International Classification of Diseases, Tenth Revision.

From: An Exploratory Study on Changes in Patients in the Emergency Department due to Coronavirus Disease 2019 in Japan: A Single-center Retrospective Study

Code Diseases Abbreviation
A00-B99 Certain infectious and parasitic diseases Infectious
G00-G99 Diseases of the nervous system Neurological
I00-I99 Diseases of the circulatory system Cardiovascular
J00-J99 Diseases of the respiratory system Non-COVID-19 respiratory
K00-K93 Diseases of the digestive system Gastrointestinal
S00-T98 Injury, Poisoning, and certain other
consequences of external causes
Trauma
V01-Y98 External causes of morbidity and mortality External causes
Not applicable Poisoning by drugs, medicaments, and biological substances Poisoning by drugs
Table 2. Number of Emergency Department (ED) Visits Classified by Final Diagnosis in 2020, with Corresponding Percent Changes in 2019.

From: An Exploratory Study on Changes in Patients in the Emergency Department due to Coronavirus Disease 2019 in Japan: A Single-center Retrospective Study

ED final diagnosis Number of
ED visits in
2019
Number of
ED visits in
2020
Percent change 95% confidence interval P-value
Lower Upper
Total number of patients 2,184 2,013 −7.8% −13.5 −1.7 0.013
Infectious 59 31 −47.5% −65.3 −20.4 0.002
Neurological 20 15 −25.0% −61.0 44.3 0.386
Cardiovascular 986 949 −3.8% −12.5 5.9 0.430
Non-COVID-19 respiratory 102 73 −28.4% −47.2 -2.9 0.030
Gastrointestinal 128 106 −17.2% −36.0 7.1 0.150
Trauma 159 119 −25.2% −41.1 −4.9 0.017
External causes 368 389 5.7% −8.2 21.7 0.441
Poisoning by drugs 162 160 −1.2% −21.1 23.7 0.914
Others 200 171 −14.5% −30.3 4.8 0.131
Table 3. Trends in Patients with Cardiopulmonary Arrest.

From: An Exploratory Study on Changes in Patients in the Emergency Department due to Coronavirus Disease 2019 in Japan: A Single-center Retrospective Study

ED final diagnosis ED visit count
in 2019
ED visit count
in 2020
% change (95% CI) 95% confidence interval P-value
Lower Upper
Total patient 2,184 2,013 −7.8% −13.5 −1.7 0.013
External causes 368 389 5.7% −8.2 21.7 0.441
All cardiopulmonary arrest cases 541 559 3.3% −9.1 17.5 0.617
Cardiopulmonary arrest due to suicide 37 53 43.2% −5.7 117.5 0.089
PAGE TOP