Table 1.

Brief information about the included studies

First author		Hospital	Province	Level of evidence	Date of patients’ inclusion	No. of patients	Outcome	Quality assessment
								Q1	Q2	Q3	Q4	Q5	Q6	Q7	Q8	Q9	Total
Wuhan						338
	Zhou [33]	Jinyintan Hospital	Hubei	IV	01/16/2020	191	S, CT, L	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Good
		Wuhan Pulmonary Hospital
	Zhou [34]	Huazhong University Hospital	Hubei	IV	12/29/2019	62	S, CT, L	Yes	Yes	Yes	Yes	Yes	Yes	NA	NA	Yes	Good
	Li [35]	Tongji Hospital	Hubei	IV	01/16/2020	51	S, CT	Yes	Yes	Yes	No	Yes	Yes	NA	CD	Yes	Good
	Huang [36]	Zhongnan Hospital	Hubei	IV	01/23/2020	34	S, CT, L	Yes	Yes	NA	NA	Yes	Yes	No	NA	Yes	Fair
Outside of Wuhan						289
	Liu [37]	Xixi Hospital	Zhejiang	IV	01/22/2020	10	S, CT, L	Yes	Yes	Yes	NA	Yes	Yes	Yes	NA	Yes	Good
	Liu [38]	Hainan Provincial People’s Hospital	Hainan	IV	01/15/2020	56	S, CT, L	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Good
	Zhu [39]	First Affiliated Hospital of USTC	Anhui	IV	01/24/2020	32	S, CT, L	Yes	Yes	Yes	Yes	Yes	Yes	NA	NA	Yes	Good
	Zhao [40]	Changsha Hospital	Hunan	IV	-	101	S, CT	Yes	Yes	Yes	NA	No	Yes	NA	Yes	Yes	Fair
		Yueyang Hospital
		Changde Hospital
		Xiangtan Hospital
	Xu [41]	Guangzhou Eighth People’s Hospital	Guangdong	IV	01/23/2020	90	S, CT	Yes	Yes	Yes	NA	Yes	Yes	NA	NA	Yes	Fair
Total						627

S, symptom; CT, chest computed tomography; L, laboratory test.