Viral Dynamic Surveillance in COVID-19 Patients: A Cohort Study

Table 1

Demographics and baseline characteristics of patients with COVID-19.

	All patients ()	Symptomatic ()	Asymptomatic ()	value
Age, years
Mean (IQR)	38 (30-49)	43 (34-57)	33 (27-44)	0·003
Range	85	85	53
Sex
Female	37 (31%)	31 (45%)	6 (13%)	<0·001
Male	81 (69%)	39 (55%)	42 (87%)
Races
Han	102	58	44	0.2733
Other	16	12	4
Occupation
Civil servant	3 (3%)	3 (4%)	0 (0%)	0·121
Farmer	23 (19%)	12 (17%)	11 (23%)	0·376
Worker	6 (5%)	4 (6%)	2 (4%)	0.747
Self-employed	8 (7%)	6 (9%)	2 (4%)	0·250
Employee	13 (11%)	10 (14%)	3 (6%)	0·097
Student	9 (8%)	6 (9%)	3 (6%)	0·592
Retired	10 (8%)	9 (13%)	1 (2%)	0·005
Medical staff	3 (3%)	3 (4%)	0 (0%)	0·121
Other	43 (36%)	17 (24%)	26 (55%)	<0·001
Comorbidities^⸸
Diabetes	5 (4%)	4 (6%)	1 (2%)	0·279
Hypertension	17 (14%)	11 (16%)	6 (13%)	0·688
Hyperlipidaemia	16 (13%)	15 (21%)	1 (2%)	<0·001
Liver dysfunction	20 (17%)	14 (20%)	6 (13%)	0·252
Gastrointestinal complaints	5 (4%)	4 (6%)	1 (2%)	0·279
Bile duct stones	4 (3%)	3 (4%)	1 (2%)	0·682
Cardiac/cerebrovascular diseases	6 (5%)	4 (6%)	2 (4%)	0·747
Kidney disease	4 (3%)	4 (6%)	0 (0%)	0·028
Respiratory failure	2 (2%)	2 (3%)	0 (0%)	0·246
Anaemia	8 (7%)	8 (11%)	0 (0%)	<0·001
Electrolyte disturbance	10 (8%)	7 (10%)	3 (6%)	0.435
Bacterial pneumonia	11 (9%)	11 (16%)	0 (0%)	<0·001
Pulmonary tuberculosis	3 (2%)	3 (4%)	1 (2%)	0·682
Hepatitis B virus	4 (3%)	2 (3%)	2 (4%)	>0·999

Data are (%). ^⸸Some patients had multiple comorbidities. IQR is interquartile range.