TABLE II. Division Basis of the Dataset.

Mild	Patient being asymptomatic or only exhibiting mild respiratory symptoms.
	Lung CT shows little or no visible pneumonia.
	Patient survive and recover
Moderate	Patient experience obvious fever, respiratory disease and other related symptoms
	Lung CT shows visible signs of pneumonia.
	Patient eventually survive and most lung lesions being recovered.
Severe	Increased lung CT lesion area.
	Patient experiences heavy respiratory distress, or requires auxiliary equipment for oxygen.
	Patient eventually survive.
Fatal	Patient experience one of the following situations during the hospitalization:
	Shock
	Respiratory failure
	Need for ventilation machine for life substance
	Death