Changes in the Hospital Standardized Mortality Ratio Before and During the COVID-19 Pandemic: A Disaggregated Analysis by Region and Hospital Type in Korea
Journal of Preventive Medicine and Public Health. 2023;56(2):180-189 
Expected and observed in‐hospital mortality in heart failure patients before and during the COVID‐19 pandemic: Introduction of the machine learning‐based standardized mortality ratio at Helios hospitals
Clinical Cardiology. 2021;45(1):75-82
Comparison of clinical characteristics and hospital mortality in critically ill patients without COVID-19 before and during the COVID-19 pandemic: a multicenter, retrospective, propensity score-matched study
Annals of Intensive Care. 2022;12(1):
In-Hospital Mortality in Non-COVID-19-Related Diseases before and during the Pandemic: A Regional Retrospective Study
International Journal of Environmental Research and Public Health. 2021;18(20):10886
Comparison of out-of-hospital cardiac arrests during the COVID-19 pandemic with those before the pandemic: an updated systematic review and meta-analysis
Frontiers in Public Health. 2023;11:
2017. Comparison of California Acute Care Hospital Central Line-Associated Bloodstream Infection Incidence by Hospital Location Before and During the COVID-19 Pandemic
Open Forum Infectious Diseases. 2022;9(Supplement_2):
Change in hospital admissions in dental diseases before and during the COVID-19 pandemic
Applied Nanoscience. 2022;13(3):2179-2185
Impact of COVID-19 on medical students` performance in surgical OSCE examination in a German University Hospital: a retrospective analysis before, during and after pandemic
. 2022;
Maternal Referral Profile Before and During the Covid-19 Pandemic at the Educational Hospital and Affiliation Hospital in Makassar City 2019 - 2021
Nusantara Medical Science Journal. 2022;106-113
Analysis of delayed admission to hospital in acute stroke patients before and during the pandemic COVID-19 in Bishkek, Kyrgyzstan
Journal of the Neurological Sciences. 2021;429:119876