Table 1.
Baseline characteristics of included studies.
| Study ID | Year | Country | Study Design | Sample Size | Male (%) | Median Age/Mean ± SD | Follow-up/Observation period/Data collection period, days |
|---|---|---|---|---|---|---|---|
| Aggarwal S | 2020 | USA | retrospective study | 16 | 12 (75%) | 67/65.5 | 36 |
| Bi X | 2020 | China | retrospective study | 113 | 64 (56.6%) | 46 | 25 |
| Cai Q | 2020 | China | retrospective study | 298 | 145 (48.66%) | 47.5 | 55 |
| Cai Y | 2020 | China | retrospective study | 7 | 5 (71.43%) | 60.29 | ----- |
| Chen G | 2020 | China | retrospective study | 21 | 17 (81%) | 56 | ----- |
| Chen X | 2020 | China | retrospective study | 48 | 37 (77.1%) | 64.6 ± 18.1 | 19 |
| Chen Q | 2020 | China | single center retrospective observational study | 145 | 79 (54.5%) | 47.5 | 71 |
| Chu J | 2020 | China | single center retrospective observational study | 54 | 36 (66.7%) | 39 | 35 |
| Colaneri M | 2020 | Italy | retrospective study | 44 | 28 (63.64%) | 67.5 | 13 |
| Deng Q | 2020 | China | retrospective study | 112 | 57 (50.9%) | 65.0 | 45 |
| Feng Y | 2020 | China | multi-center retrospective study | 476 | 271 (56.9%) | 53.0 | 46 |
| Ferguson J | 2020 | USA | retrospective study | 72 | 38 (52.8%) | 60.4 | 29 |
| Gao Y | 2020 | China | retrospective study | 43 | 26 (60.47%) | 44.08 | 10 |
| Guan WJ | 2020 | China | retrospective study | 1099 | 637 (57.96%) | 47.0 | 49 |
| He R | 2020 | China | retrospective study | 204 | 79 (38.73%) | 49.0 | 34 |
| Hong KS | 2020 | South Korea | Descriptive Study | 98 | 38 (38.8%) | 55.4 ± 17.1 | 90 |
| Huang C | 2020 | China | prospective study | 41 | 30 (73%) | 49.0 | 17 |
| Huang Q | 2020 | China | multi-center retrospective study | 54 | 28 (51.9%) | 41.0 | 24 |
| Huang R | 2020 | China | multi-center retrospective study | 202 | 116 (57.4%) | 44.0 | 19 |
| Jiang Y | 2020 | China | single center retrospective study | 60 | 35 (58.33%) | 41 | 17 |
| Ketcham SW | 2020 | China | retrospective study | 13 | 13 (100%) | 61.0 | 46 |
| Lei S | 2020 | China | retrospective study | 34 | 14 (41.2%) | 55.0 | 36 |
| Li K | 2020 | China | retrospective study | 83 | 44 (53%) | 45.5 | 60 |
| Li S | 2020 | China | retrospective study | 69 | 40 (57.97%) | 48.5 | 60 |
| Li X | 2020 | China | retrospective study | 548 | 279 (50.9%) | 60.0 | 37 |
| Li YK | 2020 | China | retrospective study | 25 | 13 (52%) | 61 | 51 |
| Liang W | 2020 | China | retrospective study | 1590 | 904 (57.4%) | 48.9 | 26 |
| Liu F | 2020 | China | retrospective study | 140 | 49 (35.0%) | 65.5 | 54 |
| Liu J | 2020 | China | retrospective single-center study | 40 | 15 (37.5%) | 48.7 ± 13.9 | 19 |
| Liu Z | 2020 | China | retrospective study | 72 | 39 (54.2%) | 46.2 ± 15.9 | 28 |
| Lodigiani C | 2020 | Italy | retrospective study | 388 | 264 (68%) | 66.0 | 57 |
| Lv Z | 2020 | China | retrospective cohort study | 354 | 175 (49.44%) | 62.0 | 24 |
| Lyu P | 2020 | China | retrospective study | 51 | 29 (56.86%) | 54 ± 17 | 40 |
| Pan L | 2020 | China | descriptive, cross-sectional, multicenter study | 103 | 37 (35.92%) | 48.2 | 60 |
| Peng YD | 2020 | China | retrospective study | 112 | 53 (47.32%) | 62.0 | 26 |
| Pereira MR | 2020 | USA | retrospective study | 90 | 53 (59%) | 57.0 | 20 |
| Shi Y | 2020 | China | retrospective study | 487 | 259 (53.2%) | 46.0 | 15 |
| Sun L | 2020 | China | retrospective study | 55 | 31 (56.4%) | 44.0 | 26 |
| Tian S | 2020 | China | retrospective study | 262 | 127 (48.5%) | 47.5 | 21 |
| Wan S | 2020 | China | retrospective study | 135 | 72 (53.3%) | 47 | 16 |
| Wang D | 2020 | China | retrospective single-center study | 138 | 75 (54.3%) | 56 | 34 |
| Wang R | 2020 | China | single-center, retrospective, descriptive study | 125 | 54 (43.2%) | 38.76 ± 13.80 | 29 |
| Wang F | 2020 | China | retrospective study | 28 | 21 (75.0%) | 68.6 ± 9.0 | 24 |
| Wu J | 2020 | China | retrospective study | 280 | 151 (53.93%) | 43.12 ± 19.02 | 31 |
| Xie H | 2020 | China | retrospective study | 79 | 44 (55.7%) | 60.0 | 21 |
| Xie J | 2020 | China | retrospective study | 56 | 24 (42.86%) | 56.5 | 10 |
| Xiong F | 2020 | China | retrospective study | 131 | 75 (57.3%) | 63.3 | 70 |
| Yang AP | 2020 | China | retrospective study | 93 | 56 (60%) | 46.4 ± 17.6 | 28 |
| Yang P | 2020 | China | retrospective study | 133 | 72 (54.14%) | 50.60 | 90 |
| Yang Y | 2020 | China | retrospective study | 50 | 29 (58%) | 62.0 | 39 |
| Yao Q | 2020 | China | retrospective study | 108 | 43 (39.8%) | 52.0 | 12 |
| Yu X | 2020 | China | descriptive study | 333 | 172 (51.7%) | 56.0 | 26 |
| Zhang JJ | 2020 | China | descriptive study | 140 | 71 (50.7%) | 57.0 | 18 |
| Zheng S | 2020 | China | retrospective study | 96 | 58 (60%) | 55.0 | 61 |
| Zhou Y | 2020 | China | multi-center retrospective study | 366 | 207 (56.6%) | 43.0 | 37 |