Table 1.
Characteristics of included studies
| Study | Setting | Sample size | Outcomes | Severe patients | Non-severe patients | ||||
|---|---|---|---|---|---|---|---|---|---|
| n (%) | Age (years)a | Women (%) | n (%) | Age (years)a | Women (%) | ||||
| Guan W et al. 2020 | China | 1099 | Admission to ICU, MV, death | 173 (15.7%) | 52 (40–65) | 42 | 926 (84.3%) | 45 (34–57) | 42 |
| Liu Y et al. 2020 | China | 12 | Respiratory failure, MV | 6 (50%) | 64 (63–65) | 50 | 6 (50.0%) | 44 (35–55) | 17 |
| Wang D et al. 2020 | China | 138 | Clinical variables, MV, death | 36 (26.1%) | 66 (57–78) | 39 | 102 (73.9%) | 51 (37–62) | 48 |
| Zhang JJ et al. 2020 | China | 140 | Respiratory distress/insufficiency | 58 (41.4%) | 64 (25–87) | 43 | 82 (58.6%) | 52 (26–78) | 54 |
MV mechanical ventilation, ICU intensive care unit
aAge data presented as median (IQR)