Variable	Type	Domain
Demographics and history
Age (years)	Continuous	18–120
Sex	Binary	Male or female
Overseas travel	Binary	Yes or no
Close contact with confirmed COVID‐19 case	Binary	Yes or no
Residential care facility resident	Binary	Yes or no
Healthcare worker	Binary	Yes or no
Pregnancy	Binary	Yes or no
Comorbidities
Chronic respiratory disease	Binary	Yes or no
Chronic cardiac disease	Binary	Yes or no
Chronic hypertension	Binary	Yes or no
Diabetes mellitus	Binary	Yes or no
Smoker or ex‐smoker	Binary	Yes or no
Obesity	Binary	Yes or no
Current known cancer	Binary	Yes or no
Immunosuppression	Binary	Yes or no
Other	Free text
ED arrival
Interhospital transfer	Binary	Yes or no
Mode of arrival	Nominal	Types of transport
Triage category	Ordinal	1–5
Symptoms
Coryza	Binary	Yes or no
Fever	Binary	Yes or no
Cough	Binary	Yes or no
Sore throat	Binary	Yes or no
Acute dyspnoea	Binary	Yes or no
Acute diarrhoea	Binary	Yes or no
Acute muscle aches	Binary	Yes or no
Acute fatigue	Binary	Yes or no
Anosmia and/or dysgeusia	Binary	Yes or no
Number of days since onset of first symptom	Continuous	0–28
Signs
Vital signs
Systolic blood pressure (mmHg)	Continuous	0–300
Heart rate (beats/min)	Continuous	0–300
Respiratory rate (breaths/min)	Continuous	0–50
Temperature (degrees Celsius)	Continuous	20–50
GCS	Ordinal	3–15
Abnormalities on chest auscultation	Binary	Yes or no
Investigations
Abnormalities on chest X‐ray	Nominal	Abnormality and Type
Abnormalities on chest CT	Nominal	Abnormality and Type
Blood test results (ED)	Numerical	Test specific
SARS‐CoV‐2 test result in ED	Binary	Positive or negative
SARS‐CoV‐2 test result – subsequent as inpatient	Binary	Positive or negative
Management in the ED
Clinical impression (Severity)	Ordinal	Mild to Extreme
Goals of care	Ordinal	A, B, C or D
Oxygen delivery methods in the ED:
Nasal prongs	Binary	Yes or no
Mask	Binary	Yes or no
High flow nasal	Binary	Yes or no
Non‐invasive	Binary	Yes or no
Invasive ventilation	Binary	Yes or no
Intubation in the ED	Binary	Yes or no
Disposition
Hospital admission	Binary	Yes or no
ICU admission	Binary	Yes or no
Mechanical ventilation during admission	Binary	Yes or no
Number of ventilation free days (days)	Continuous	0–Maximum
Hospital length of stay (days)	Continuous	0–Maximum
Death in hospital	Binary	Yes or no