Table 5.
Analyzed exposures.
| Analyzed exposures | Studies (N=1307), n (%) |
| Biological markers | 673 (51.5) |
| Vital signs | 428 (32.7) |
| Demographic characteristics | 332 (25.4) |
| Treatments | 278 (21.3) |
| Comorbidities | 271 (20.7) |
| Scores | 125 (9.6) |
| Morphological measurement | 114 (8.7) |
| Ventilation settings | 103 (7.9) |
| Social determinants | 88 (6.7) |
| Language | 85 (6.5) |
| Other | 83 (6.4) |
| Mechanical ventilation | 76 (5.8) |
| Type of admission | 53 (4.1) |
| Diagnostic procedure | 49 (3.7) |
| Length of stay | 45 (3.4) |
| Type of intensive care unit | 43 (3.3) |
| Fluid balance | 40 (3.1) |
| Renal replacement therapy | 35 (2.7) |
| Transfusion | 20 (1.5) |
| Surgery | 20 (1.5) |
| Cluster | 18 (1.4) |
| Substance use disorder | 16 (1.2) |
| Artificial nutrition | 5 (0.4) |