Table 1.

Demographic, laboratory, and CT findings of patients on admission (n = 494 cases)

Index	n/median	%/IQR
Sex (male)	266	53.80%
Age, years	40	27-59
<18	25	5.06%
≥18, <65	393	79.55%
≥65	76	15.38%
Severe illness/death cases	30/7	6.07%/1.42%
Early asymptomatic infection	39	7.89%
Imported cases	167	33.81%
Days of illness onset*	4	2-7
Days of hospitalization⁎⁎	16	12-21
Days needed for the pharyngeal swab nucleic acid turned negative⁎⁎⁎	13	8-18
WBC (×109/L)	5.00	4.03-6.28
LYM (×109/L)	1.29	0.91-1.74
Patients with abnormal CT findings	415	84.01%

^⁎Days of onset = date of admission − date of early symptom, asymptomatic cases were not included.

^⁎⁎Days of hospitalization = date of discharge − date of admission, deaths cases were not included.

^⁎⁎⁎Days needed for pharyngeal swab nucleic acid turned negative = first date of pharyngeal swab nucleic acid turned negative − first date of early symptom, and days needed for asymptomatic infected patient's nucleic acid turned negative = date of pharyngeal swab nucleic acid turned negative − date of diagnosis, death cases were not included.