Table 2.

List of studies included in the analysis

First author	Judgmenta	Cases	Type of study	Setting
Chen et al6	Good	9	Retrospective	Department of Gynaecology and Obstetrics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
Liu et al10	Fair	13	Retrospective	Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China
Chen et al7	Poor	3	Retrospective	Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
Zhang et al15	Fair	16	Retrospective with control group	Department of Obstetrics, the Central Hospital of Qianjiang City, Qianjiang 433199, China
Zhu et al16	Fair	9	Retrospective	Department of Neonatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
Li et al8	Poor	1	Retrospective	The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China

Della Gatta. COVID-19 during pregnancy: a systematic review. Am J Obstet Gynecol 2020.

^aUsing the tool described by Murad at al.¹³