This study examined to what extend the outbreak of Covid-19 influenced emergency medical service utilization. Changes in medical services utilization were analyzed using monthly data for the years 2018 to 2020 from the Health Insurance Review and Assessment Service. Percentage analysis was conducted on changes in medical use before and after COVID-19, and the difference in usage between perids 2018-2019 and 2019-2020 was analyzed by linear regression. Changes in the trend of emergency medical services used due to the COVID-19 outbreak were analyzed using local weighted regression method. In 2020, the utilization of emergency medical services at general hospitals or higher-tier medical institutions decreased by 22.8% compared to the average before the COVID-19 outbreak, and the number of patients decreased significantly during the first, second, and third waves of the COVID-19 pandemic. Specifically, medical use declined more significantly among patients with mild conditions than among those with severe conditions. Meanwhile, the mortality rate within 7 days of visiting the emergency room increased by 32.6% after COVID-19, indicating that a decrease in emergency medical use led to a decrease in the performance of emergency care.
이 연구에서는 COVID-19 발생 전․후의 응급의료이용을 비교함으로써, COVID-19가 응급의료이용에 미치는 영향을 파악하였다. 건강보험심사평가원의 2018년부터 2020년의 월별 응급의료이용 자료를 이용해 의료이용 변화를 분석하였다. 코로나 전․후의 의료이용 변화는 백분율 분석을 진행하였으며 선형회귀분석을 통해 2018~2019년과 2019~2020년의 의료이용 차이를 확인하였다. 이중차이 분석 및 국소회귀분석을 통해 COVID-19로 인한 의료이용 추세 변화를 확인하였다. 2020년 종합병원급 이상 의료기관의 응급의료 이용자 수는 COVID-19 발생 전 2년 평균 대비 -22.8% 감소했고, COVID-19 1, 2, 3차 유행시기에 이용자 감소폭이 컸다. 특히, 중증질환보다 경증질환에서 큰 폭의 감소가 있었다. 한편, 응급실 방문 후 7일 이내 사망률은 COVID-19 후 32.6% 증가해 응급의료이용량 감소가 응급의료 성과 감소로 이어졌음을 확인할 수 있었다.