Table 1.
Characteristics of the included studies.
| First author | Country | Published time | Type of study | Mean age | Male/female | Nationality | No. of patients | Diagnostic methods |
|---|---|---|---|---|---|---|---|---|
| Hui et al. (9) | China | 14, Jan, 2020 | Case series | NR | NR | Chinese | 41 | RT-PCR/CT-scan |
| Xia et al. (10) | China | 26, Feb, 2020 | Case series | 54.5 | 21M, 9F | Chinese | 30 | RT-PCR |
| Xu et al. (11) | China | 13, Feb, 2020 | Case series | 41 | M35, F27 | Chinese | 62 | RT-PCR |
| Zhang et al. (12) | China | 7, Feb, 2020 | Case series | NR | NR | Chinese | 178 | RT-PCR |
| To et al. (13) | China | 12, Feb, 2020 | Case series | 62.5 | 7M, 5F | Chinese | 12 | RT-PCR |
| Zou et al. (14) | China | 19, Feb, 2020 | Correspondence | 59 | 9M,9F | Chinese | 18 | RT-PCR |
| Hoehl et al. (15) | Germany | 3, Mar, 2020 | Correspondence | 35 | NR | German | 126 | RT-PCR/CT-scan |
| Pan et al. (16) | China | 24, Feb, 2020 | Correspondence | NR | NR | Chinese | 82 | RT-PCR/CT-scan |
| Tang et al. (17) | China | 19, Feb, 2020 | Cross-sectional | 54 | 98M, 85F | Chinese | 183 | RT-PCR |
| Chung et al. (18) | China | 4, Feb, 2020 | Cross-sectional | 51 | M13, F8 | Chinese | 21 | RT-PCR/CT-scan |
| Fang et al. (19) | China | 19, Feb, 2020 | Cross-sectional | 45 | 29M, 22F | Chinese | 51 | RT-PCR/CT-scan |
| Guan et al. (20) | China | 28, Feb, 2020 | Cross-sectional | 47 | 640M,459F | Chinese | 1099 | RT-PCR/CT-scan |
| Huang et al. (21) | China | 24, Jan, 2020 | Cross-sectional | 49 | 30M,11F | Chinese | 41 | RT-PCR |
| Kui et al. (22) | China | 7, Feb, 2020 | Cross-sectional | 57 | 61M,76F | Chinese | 137 | RT-PCR |
| Li et al. (23) | China | 29, Jan, 2020 | Cross-sectional | 52 | M238, F187 | Chinese | 425 | RT-PCR/CT-scan |
| Liu et al. (24) | China | 9, Feb, 2020 | Cross-sectional | 53.6 | 8M, 4F | Chinese | 12 | RT-PCR/CT-scan |
| Wang et al. (25) | China | 7, Feb, 2020 | Cross-sectional | 56 | 75M, 63F | Chinese | 138 | RT-PCR/CT-scan |
| Wu et al. (26) | China | 29, Feb, 2020 | Cross-sectional | 46 | 39M, 41F | Chinese | 80 | RT-PCR |
| Zhang et al. (27) | China | 19, Feb, 2020 | Cross-sectional | 57 | 71M,69F | Chinese | 140 | RT-PCR |
| Ai et al. (28) | China | 26, Feb, 2020 | Cross-sectional | 48.5 | M467, F547 | Chinese | 1014 | RT-PCR/CT scan |
| Pan et al. (29) | China | 13, Feb, 2020 | Cross-sectional | 40 | 6M, 15F | Chinese | 21 | RT-PCR/CT-scan |
| Shi et al. (30) | China | 24, Feb, 2020 | Cross-sectional | 49.5 | 42M, 39F | Chinese | 81 | RT-PCR/CT-scan |
| Yang et al. (31) | China | 21, Feb, 2020 | Cross-sectional | 59.7 | 35M, 17F | Chinese | 52 | RT-PCR |
| Bajema et al. (32) | China | 4, Feb, 2020 | Cross-sectional | NR | 115M, 95F | Chinese | 210 | RT-PCR/CT-scan |
| Bernheim et al. (33) | China | 20, Feb, 2020 | Cross-sectional | 45.3 | 61M, 60F | Chinese | 121 | RT-PCR |
| Chen et al. (34) | China | 15, Feb, 2020 | Cross-sectional | 55.5 | 67M, 32F | Chinese | 99 | RT-PCR |
| Pan et al. (35) | China | 13, Feb, 2020 | Cross-sectional | 45 | 33M, 30F | Chinese | 63 | RT-PCR |
| Xu et al. (36) | China | 21, Feb, 2020 | Cross-sectional | 44 | 29M, 21F | Chinese | 50 | RT-PCR/CT-scan |
| Xu et al. (37) | China | 28, Feb, 2020 | Cross-sectional | 50 | 39M, 51F | Chinese | 90 | RT-PCR |
| Chang et al. (38) | China | 7, Feb, 2020 | Research letter | 34 | 10M, 3F | Chinese | 13 | RT-PCR/CT-scan |
| Chen et al. (39) | China | 26, Feb, 2020 | Research letter | NR | NR | Chinese | 85 | RT-PCR/CT-scan |
| Kwok et al. (40) | China | 7, Feb, 2020 | Research letter | 59.8 | 9M, 5F | Chinese | 14 | RT-PCR/CT-scan |
| Hansen et al. (41) | Norway | 23 April, 2020 | Cross-sectional | 72.5 | 28M,14F | Norwegian | 42 | RT-PCR/CT-scan |
| Yu et al. (42) | China | 14, May, 2020 | Cross-sectional | 64 | 139 M, 87 F | Chinese | 226 | RT-PCR/CT-scan |