Characteristics of patients in included studies
| Author, year | Total number | Mean age (years) | Sex (male,%) | Cardiovascular disease (%) | Hypertension (%) | Cardiac injury (%) | ||||||
| Death | Alive | Death | Alive | Death | Alive | Death | Alive | Death | Alive | Death | Alive | |
| Chen, 202015 | 113 | 161 | 68 | 51 | 73 | 55 | 15 | 4 | 48 | 24 | 77 | 17 |
| Deng, 202016 | 109 | 116 | 69 | 40 | 67 | 44 | 11.9 | 3.4 | 36.7 | 15.5 | 59.6 | 0.9 |
| Guan, 202017 | 50 | 1540 | 48.9 | 57.3 | 16.0 | 2.7 | 56.0 | 15.6 | NA | NA | ||
| Guo, 202018 | 43 | 144 | 58.5 | 48.7 | 15.5 | 32.6 | 27.8 | |||||
| He, 202019 | 26 | 28 | 70.0 | 66.5 | 61.5 | 64.3 | 19.2 | 10.7 | 46.2 | 42.9 | 69.2 | 21.4 |
| Shi, 202020 | 57 | 359 | 64 | 49.3 | 14.7 | 30.5 | 19.7 | |||||
| Yang, 202021 | 32 | 20 | 64.6 | 51.9 | 66 | 70 | 9 | 10 | NA | NA | 28 | 15 |
| Yuan, 202022 | 10 | 17 | 68 | 55 | 40 | 47 | 30 | 0 | 50 | 0 | NA | NA |
| Zhou, 202023 | 54 | 137 | 69 | 52 | 70 | 59 | 24 | 1 | 48 | 23 | 59 | 1 |
| Cao, 202024 | 17 | 85 | 72 | 53 | 76.5 | 47.1 | 17.6 | 2.4 | 64.7 | 20.0 | 70.6 | 3.5 |
NA, not available.