TABLE 1.
Definition of severe outcome in the analyzed studies.
| References | Resp. failure | ARDS | Coma or Encephalopathy | Shock | Myocardial injury | Heart failure | Coag dysfxn | AKI | Multiorgan dysfxn | Liver dysfxn | IMV | ECMO | Death |
| Al Kuwari (25) | X | ||||||||||||
| Arslan et al. (23) | X | X | X | X | X | X | |||||||
| Aykac (26) | X | X | X | X | X | X | X | X | |||||
| Aykac (27) | X | X | X | X | X | X | X | X | |||||
| Bellino (28) | X | X | X | ||||||||||
| Ece (29) | X | X | X | X | X | X | X | X | |||||
| Finelli (30) | X | X | X | X | X | ||||||||
| Geng (31) | X | X | X | ||||||||||
| Giacomet (32) | X | X | X | X | |||||||||
| Guo (22) | X | X | |||||||||||
| Guo (33) | X | X | X | ||||||||||
| Krajcar (34) | X | X | |||||||||||
| Kushner (35) | X | X | X | ||||||||||
| Lazzerini (36) | X | X | |||||||||||
| Oh (37) | X | X | X | ||||||||||
| Otto (38) | X | ||||||||||||
| Ozenen (39) | X | X | X | X | X | X | X | X | |||||
| Parri (40) | X | X | X | X | |||||||||
| Parri (41) | X | X | X | X | X | X | X | X | |||||
| Preston (42) | X | X | |||||||||||
| Rabha (43) | X | X | X | ||||||||||
| Saraiva (44) | X | X | |||||||||||
| Sharma (45) | X | X | X | ||||||||||
| Siddiqui (46) | X | X | X | ||||||||||
| Soysal (47) | X | X | X | X | X | X | X | X | |||||
| Yanover (48) | X | ||||||||||||
| Yilmaz (49) | X | X | X | X | X | X | X |
ARDS, acute respiratory distress syndrome; Coag dysfxn, coagulation dysfunction; AKI, acute kidney injury; Multiorgan dysfxn, multiorgan dysfunction; IMV, invasive mechanical ventilation; ECMO, extracorporeal membrane oxygenation. Specific criteria defining each outcome varied across included studies.