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The Dynamic Impacts of Serial Prevention-and-Control Policies Against COVID-19 Pandemic on Residents' Emergency
Jun-Jie Ye1, Min Yao2, Hui-Jie Qin1
1Department of Epidemiology and Biostatistics, School of Public Health, Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region, China.
Background:
China has implemented serial prevention-and-control policies against COVID-19 pandemic pre- and post-reopening, yet it was unclear whether these policy adjustments resulted in changes in residents' emergency medical services (EMS) demands.
Objectives:
We aimed to assess the impacts of gradual loosening and reopening policies against the COVID-19 pandemic on residents' EMS demands.
Methods:
We conducted an observational study using a data set of 42,909 EMS call records from Nanning Emergency Medical Center during November 2022 to January 2023. We used joinpoint regression to reveal the temporal trends in the daily volume of EMS calls, and interrupted time series analysis to assess the dynamic impacts of serial policies against COVID-19 on the daily volume of EMS calls.
Results:
The daily volume of EMS calls declined by an average of 2.378 calls per day during the period of "dynamic zero-COVID" policy. During the period of "20 new rules" policy, the daily volume of EMS calls slightly increased by an average of 5.362 calls per day. During the period of "10 new measures" policy, the daily volume of EMS calls significantly increased, by an average of 32.566 calls per day. During the "Adjustment 1" policy, the daily volume of EMS calls dramatically decreased by an average of 33.411 calls per day. During the "Adjustment 2" policy, the daily volume of EMS calls significantly continued to decrease by an average of 4.381 calls per day.
Conclusions:
Residents' EMS demands slightly decreased during the "dynamic zero-COVID" policy, slightly increased during the "20 new rules" policy, rapidly increased during the reopening "10 new measures" policy, dramatically decreased during the "Adjustment 1" policy, and continued to decrease during the "Adjustment 2" policy.
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