Table 1. Characteristics of the included studies.
| Study (No. reference) | Journal | Year of publication | Date (MM/DD) | Country | Institution | Total No. enrolled patients | Duration of patient recruitment | Consecutive enrollment | Multicenter study | Research type | Study type | JBI quality tool |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Zhou SC et al. (14) | American Journal of Roentgenology | 2020 | 02/19 | China | Department of Radiology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei province, China | 62 | 2020/01/16–2020/01/30 | NR | No | Retrospective study | Cross-sectional | Include |
| Wu J et al. (38) | European Radiology | 2020 | 04/23 | China | Department of Radiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu province, China | 130 | 2020/01/24–2020/02/17 | NR | Yes | Retrospective study | Cross-sectional | Include |
| Shi BB et al. (39) | Shi Yong Lin Chuang Yi Yao Za Zhi (Journal of Clinical Medicine in Practice) | 2020 | 02/26 | China | Department of Medical Imaging, Subei People’s Hospital of Yangzhou University, Yangzhou, Jiangsu province, China | 23 | 2020/01/21–2020/02/20 | NR | No | Retrospective study | Cross-sectional | Include |
| Dai H et al. (8) | International Journal of Infectious Diseases | 2020 | 04/01 | China | Department of Radiology, the First Affiliated Hospital of Soochow University, Suzhou city, Jiangsu province, China | 234 | 2020/01/10–2020/02/07 | NR | Yes | Retrospective study | Cross-sectional | Include |
| Damiano C et al. (40) | Radiology | 2020 | 04/03 | Italy | Department of Surgical and Medical Sciences and Translational Medicine, Sapienza University of Rome-Sant’Andrea University Hospital, Via di Grottarossa, Rome, Italy | 158 | 2020/03/04–2020/03/19 | Yes | No | Prospective study | Cross-sectional | Include |
| Han R et al. (11) | American Journal of Roentgenology | 2020 | 02/15 | China | Department of Radiology, Wuhan No. 1 Hospital, Wuhan, Hubei province, China | 108 | 2020/01/04–2020/02/03 | No | No | Retrospective study | Cross-sectional | Include |
| Zhao W et al. (9) | American Journal of Roentgenology | 2020 | 02/19 | China | Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan province, China | 101 | NR | NR | Yes | Retrospective study | Cross-sectional | Include |
| Lu XF et al. (41) | Zhong Hua Fang She Xue Za Zhi (Chinese Journal of Radiology) | 2020 | 02/04 | China | Department of Radiology, Renmin Hospital of Wuhan University, Wuhan, Hubei province, China | 141 | 2020/01/20–2020/01/28 | No | No | Retrospective study | Cross-sectional | Include |
| Zhu ZX et al. (42) | Xi Nan Da Xue Xue Bao (Zi Ran Ke Xue Ban) [Journal of Southwest University (Natural Science Edition)] | 2020 | 03/18 | China | Puren Hospital of Wuhan University of Science and Technology, Wuhan, Hubei province, China | 82 | 2020/01/30–2020/02/29 | NR | No | Retrospective study | Cross-sectional | Include |
| Cheng SP et al. (13) | Shandong Da Xue Xue Bao (Yi Xue Ban) [Journal of Shandong University (Health Sciences)] | 2020 | 04/08 | China | Shandong Medical Imaging Research Institute Affiliated to Shandong University, Jinan, Shandong, China; Department of Radiology, Linyi People’s Hospital, Lin Yi, Shandong, China; Department of Radiology, Yantai Qishan Hospital, Yantai, Shandong, China; Department of Radiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University; Department of Radiology, Zaozhuang Municipal Hospital, Zaozhuang, Shandong, China | 105 | 2020/01–2020/03 | NR | Yes | Retrospective study | Cross-sectional | Include |
| Li M et al. (43) | Zhong Nan Da Xue Xue Bao (Yi Xue Ban) (Journal of Central South Univercity (Medical Science)) | 2020 | 02/26 | China | Department of Radiology, Zhuzhou Central Hospital, Zhuzhou, Hunan province, China | 57 | 2019/12/28–2020/02/20 | NR | Yes | Retrospective study | Cross-sectional | Include |
| Lei PG et al. (15) | Journal of X-Ray Science and Technology | 2020 | 03/09 | China | Department of Radiology, the Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou province, China | 14 | 2020/01/16–2020/02/22 | Yes | No | Retrospective study | Cross-sectional | Include |
| Jie BK et al. (44) | Canadian Association of Radiologists’ Journal | 2020 | 04/20 | China | Department of Radiology, Dezhou People’s Hospital, Dezhou, Shandong province, China | 24 | 2020/01/22–2020/02/05 | NR | No | Retrospective study | Cross-sectional | Include |
| Zhao SQ et al. (45) | Fen Zi Ying Xiang Xue Za Zhi (Journal of Molecular Imaging) | 2020 | 02/24 | China | Department of Radiology, Baoan People’s Hospital, Shenzhen, Guangdong province, China | 13 | NR | NR | No | Retrospective study | Cross-sectional | Include |
| Pascal L. et al. (46) | European Journal of Radiology Open | 2020 | 04/01 | Italy | Radiology Department, Valduce Hospital, Como, Italy | 58 | 2020/02/15–2020/03/15 | Yes | No | Retrospective study | Cross-sectional | Include |
| Meng C et al. (47) | Guangdong Yi Xue (Guangdong Medical Journal) | 2020 | 03/02 | China | Department of Respiratory and Critical Medicine, the People’s Hospital of Hainan province, Haikou, Hainan province, China | 20 | 2020/01–2020/02 | NR | No | Retrospective study | Cross-sectional | Include |
| Li XH et al. (48) | Shou Du Yi Ke Da Xue Xue Bao (Journal of Capital Medical University) | 2020 | 02/28 | China | Department of Radiology, the First Affiliated Hospital of Anhui Medical University, Anhui province Clinical Image Quality Control Center; Department of Radiology, The People’s Hospital of Bozhou, Hefei, Anhui province, China | 26 | 2020/01–2020/02 | NR | Yes | Retrospective study | Cross-sectional | Include |
| Li L et al. (49) | Shou Du Yi Ke Da Xue Xue Bao (Journal of Capital Medical University) | 2020 | 02/28 | China | Department of Radiology, Beijing Youan Hospital, Capital Medical University, Beijing, China; Department of Postgraduate, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi province, China | 25 | 2020/01/23–2020/02/06 | NR | No | Retrospective study | Cross-sectional | Include |
| Zhang Y et al. (50) | Lin Chuang Hui Cui (Clinical Focus) | 2020 | 02/28 | China | Department of Medical Imaging, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei province, China | 40 | 2020/01/26–2020/02/12 | NR | Yes | Retrospective study | Cross-sectional | Include |
| Xiao HJ et al. (51) | Zhengzhou Da Xue Xue Bao (Yi Xue Ban) [Journal of Zhengzhou University (Medical Sciences)] | 2020 | 03/03 | China | Department of Radiology, the First Affiliated Hospital, Zhengzhou University, Zhengzhou, Henan province, China | 54 | 2020/01/20–2020/02/25 | NR | No | Retrospective study | Cross-sectional | Include |
| Hu R et al. (52) | Zhong Hua Fang She Xue Za Zhi (Chinese Journal of Radiology) | 2020 | 03/05 | China | Department of Imaging, Shi Yan Tai He Hospital Affiliated of Hubei University of Medicine, Shiyan, Hubei province, China | 202 | 2020/01/21–2020/02/10 | NR | No | Retrospective study | Cross-sectional | Include |
| Bai HX et al. (53) | Radiology | 2020 | 03/10 | China and USA | Department of Diagnostic Imaging, Rhode Island (RI) Hospital, Providence, RI, USA | 424 | COVID-19 patients: 2020/01/06–2020/02/20 Patients with other viral pneumonia: 2017-2019 | NR | Yes | Retrospective study | Cross-sectional | Include |
JBI, Joanna Briggs Institute; MM/DD, month/date; NR, not reported.