Supplementary Material 1. Glossary of the variables included in the present study.
DEMOGRAPHICS
Age Age calculated as the difference in decimal years between the date of inclusion in the study and the date of birth.
Sex Male/Female
Body mass index Calculated by dividing kilograms of body weight by height in square meters:
body mass index (BMI) = weight [kg]/ height [m2] = kg/m2) MEDICAL HISTORY
Charlson comorbidity index†
immunosuppression Neutropenia, solid / hematopoietic organ transplantation, onco-
haematological patients with active chemotherapy, HIV infection with CD4
<200 and pregnant women.
Smoking Yes/No/former smoker
TREATMENT AT HOME
Hydroxychloroquine Receiving treatment with hydroxychloroquine Azithromycin Receiving treatment with azithromycin Amoxicillin Receiving treatment with amoxicillin
Other Antipyretics, nonsteroidal anti-inflammatory drugs VITAL SIGNS AT EMERGENCY DEPARTMENT ARRIVAL
Systolic and Diastolic blood pressure
Measured in mmHg of the patient on arrival to the ED. This value can be that obtained during triage or the first taken on initiating care.
Heart rate Central heart rate measured as beats per minute of the patient on arrival to the ED. This value can be that obtained during triage or the first taken on initiating care.
Respiratory rate Respiratory rate measured as beats per minute of the patient on arrival to the ED. This value can be that obtained during triage or the first taken on initiating care.
Room air pulsioxymetry Oxygen saturation expressed as percentage obtained by capillary
pulsioxymetry on arrival to the ED. This value can be that obtained during triage or the first taken on initiating care.
Temperature Temperature of the patient on arrival to the ED measured in degrees celsius.
This value can be that obtained during triage or the first taken on initiating care
CHEST RADIOGRAPHY (X-RAY)
Describes whether the patient shows the following in a chest X-ray:mild unilobar or multilobar alveolar pneumonia (radiological opacities < 50%
pulmonary area).
Chest radiography reported by a board certified radiologist BLOOD TESTS AT EMERGENCY DEPARTMENT ARRIVAL
Lymphocyte cells/ml
Estimated glomerular filtration rate (eGFR)
In ml/min/1,73m²by CKD-EPI formula*
Glutamic-pyruvic transaminase(GPT)
In mg/dl
Glutamic oxaloacetic transaminase(GOT)
In mg/dl
Lactate dehydrogenase (LDH) In mg/dl
D-dimer In ng/ml
T-hs-troponin in ng/L
DISPOSITION
Revisit at ED Patient discharged directly home from the ED without hospital admission and revisit to the emergency department within 30 days after discharge Hospital admission Patient transferred to an in-hospital ward after ED management within 30
days after discharge from the ED
