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Incidence and Mortality in Emergency Patients Transported by Emergency-Medical-Service Personnel During the First Surge COVID-19 Pandemic in Osaka Prefecture, Japan; A Population-Based Study

21 Pages Posted: 2 Feb 2021

See all articles by Yusuke Katayama

Yusuke Katayama

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture

Kenta Tanaka

Department of Social and Environmental Medicine, Division of Environmental Medicine and Population Sciences, Osaka University Graduate School of Medicine

Tetsuhisa Kitamura

Osaka University

Taro Takeuchi

Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine

shota nakao

Rinku General Medical Center

Masahiko Nitta

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture

Taku Iwami

Kyoto University - Kyoto University Health Service

Satoshi Fujimi

Osaka General Medical Center

Toshiyuki Uejima

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture

Yuuji Miyamoto

Otemae Hospital

Takehiko Baba

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture

Yasumitsu Mizobata

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture

Yasuyuki Kuwagata

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture

Takeshi Shimazu

Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine

Tetsuya Matsuoka

Rinku General Medical Center

More...

Abstract

Background: Novel corona virus (COVID-19) outbreaks have spread worldwide. Although the COVID-19 pandemic affects the emergency medical service (EMS) system, which is one factor of primary care, little is known about its impact. This study aimed to reveal the impact of the COVID-19 pandemic on the EMS system and outcome of emergency patients transported by ambulance in Osaka Prefecture, Japan.

Methods: This was a retrospective study with a study period from 1 January 2020 to 31 May 2020. We included patients transported by ambulance who were registered in a population-based registry of emergency patients transported by ambulance. The primary endpoints of this study were the incident number of patients transported by ambulance each month and the number of deaths among emergency patients admitted to hospital each month. We calculated the incidence rate ratio (IRR) and 95% confidence interval (CI) using a Poisson regression model with year 2019 as the reference.

Findings: From January to May 2019, 205,195 patients were transported, whereas from January to May 2020, 180,362 patients were transported, indicating a significant decrease in the number of emergency patients transported by ambulance (IRR: 0.88, 95% CI: 0.87–0.88). The number of deaths among emergency patients admitted to hospital was 5237 in January-May 2019 and remained unchanged at 5172 in January-May 2020 (IRR: 0.99, 95% CI: 0.95–1.03).

Interpretation: The first surge of the COVID-19 pandemic had no adverse effect on the EMS system in Osaka Prefecture, Japan.

Funding: Japanese Society of the Promotion of Science KAKENHI (grant no. JP18H02902).

Declaration of Interests: All authors of this manuscript declared that they have no conflicts of interest that relate to the content of this manuscript.

Ethics Approval Statement: This study was approved by the Ethics Committee of Osaka University Graduate School of Medicine (approval no. 15003).

Suggested Citation

Katayama, Yusuke and Tanaka, Kenta and Kitamura, Tetsuhisa and Takeuchi, Taro and nakao, shota and Nitta, Masahiko and Iwami, Taku and Fujimi, Satoshi and Uejima, Toshiyuki and Miyamoto, Yuuji and Baba, Takehiko and Mizobata, Yasumitsu and Kuwagata, Yasuyuki and Shimazu, Takeshi and Matsuoka, Tetsuya, Incidence and Mortality in Emergency Patients Transported by Emergency-Medical-Service Personnel During the First Surge COVID-19 Pandemic in Osaka Prefecture, Japan; A Population-Based Study. Available at SSRN: https://ssrn.com/abstract=3768531 or http://dx.doi.org/10.2139/ssrn.3768531

Yusuke Katayama (Contact Author)

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture ( email )

Kenta Tanaka

Department of Social and Environmental Medicine, Division of Environmental Medicine and Population Sciences, Osaka University Graduate School of Medicine

Tetsuhisa Kitamura

Osaka University

1-1 Yamadaoka
Suita
Osaka, 565-0871
Japan

Taro Takeuchi

Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine ( email )

Shota Nakao

Rinku General Medical Center

Masahiko Nitta

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture ( email )

Taku Iwami

Kyoto University - Kyoto University Health Service

Yoshida-Honmachi
Japan

Satoshi Fujimi

Osaka General Medical Center

Japan

Toshiyuki Uejima

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture ( email )

Yuuji Miyamoto

Otemae Hospital

Japan

Takehiko Baba

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture ( email )

Yasumitsu Mizobata

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture ( email )

Yasuyuki Kuwagata

The Working Group To Analyze the Emergency Medical Care System in Osaka Prefecture ( email )

Takeshi Shimazu

Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine ( email )

Tetsuya Matsuoka

Rinku General Medical Center

Japan

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