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Table 1 Classification of different cases of COVID-19

From: The efficacy and safety of combined chinese herbal medicine and western medicine therapy for COVID-19: a systematic review and meta-analysis

Type of participants   Clinical symptoms
Severe cases Adult case (i) Respiratory distress (30 breaths/ min)
(ii) Oxygen saturation ≤ 93% at rest
(iii) Arterial partial pressure of oxygen (PaO2)/ fraction of inspired oxygen (FiO2) 300 mmHg
(l mmHg = 0.133 kPa)
(iv) Chest imaging shows obvious lesion progression within 24–48 h > 50%
Child cases (i) High fever lasting more than three days
(ii) Tachypnea, independent of fever and crying
(iii) Oxygen saturation ≤ 93% on finger pulse oximeter taken at rest
(iv) Labored breathing
(v) Lethargy and convulsion
(vi) Difficulty feeding and signs of dehydration
Moderate cases   (i) Fever
(ii) Respiratory symptoms
(iii) Radiological findings of pneumonia
Mild cases   (i) the mild symptom improvement
(ii) No sign of pneumonia on imaging