COVID-19(241) Patient(144) Emergency(80) emergency department(72) pandemic(65) SARS-CoV-2(64) age(58) Mortality(51) patients(47) COVID-19 patient(43) coronavirus(41) Admission(41) hospital(39) Department(39) COVID-19 pandemic(38) patients with COVID-19(38) disease(38) retrospective(38) Care(37) evaluated(37) Treatment(37) positive(36) coronavirus disease(35) was performed(35) performed(35) 95% CI(34) syndrome(33) determine(33) significantly(33) Symptom(33)