Table 2 Characteristics of included studies
Characteristic | Value | Frequency | % |
|---|---|---|---|
Disposition | Admission | 39 | 33.33 |
| Â | Critical care | 45 | 38.46 |
| Â | Mortality | 33 | 28.21 |
Data source | Private | 104 | 88.89 |
| Â | Public | 13 | 11.11 |
Data structure for feature | Structured | 92 | 78.63 |
| Â | Unstructured | 21 | 17.95 |
| Â | Combined | 4 | 3.42 |
Type of unstructured feature | Free text | 17 | 68.00 |
| Â | Image | 8 | 32.00 |
Type of validation | External | 7 | 5.98% |
| Â | Internal | 110 | 94.02% |
Age group of sample | Adult | 83 | 70.94 |
| Â | Mixed | 13 | 11.11 |
| Â | Youth | 10 | 8.55 |
| Â | Elder | 6 | 5.13 |
| Â | Unclear | 5 | 4.27 |
Type of artificial intelligence techniques adopted | Deep learning | 33 | 28.21 |
Machine learning | 84 | 71.79 | |
Cross validation | No | 43 | 36.75% |
| Â | Yes | 74 | 63.25% |
Ensemble | No | 45 | 38.46 |
| Â | Yes | 72 | 61.54 |