Table 1.

The demographic and clinical characteristics of all patients.

Variables	All Patients
Clinical petameters (N = 301)
Age, median (IQR), y	58.0 (44.0−68.0)
<65	63.5% (191/301)
≥65	36.5% (110/301)
Gender
Male	51.2 % (154/301)
Female	48.8 % (147/301)
Onset of symptom to admission, median (IQR), d	9 (7−12)
Status
In-hospital	81.7 % (246/462)
Discharge	18.3 % (55/301)
SARS-CoV-2 RT-PCR assay
Total tests	1113
Tests/patient	3.7 tests/patient
Throat swabs	92.7 % (1028/1113)
Nasal swabs	7.6 % (85/1113)
Onset of symptom to, median (IQR), d
First SARS-CoV-2 RT-PCR assay	8.0 (5.0−12.0)
Last SARS-CoV-2 RT-PCR assay	24.0 (20.0−28.0)
Positive SARS-CoV-2 RT-PCR assay	16.0 (10.0−23.0)
Negative SARS-CoV-2 RT-PCR assay	20.0 (17.0−24.0) (N = 216)
Positive rate of SARS-CoV-2 RT-PCR, d
Day 0−7	97.9 % (137/140)
Day 8−14	68.8 % (152/221)
Day 15−21	36.3 % (127/350)
Day 22−28	30.0 % (92/307)
>28 days	26.3 % (25/95)

Abbreviations: IQRinterquartile range; RT-PCRreal-time reverse transcription polymerase chain reaction.