Table 4.
Top 20 keywords with high frequency.
| Keywords | Strength | Freq | Keywords | Strength | Freq |
|---|---|---|---|---|---|
| Mortality | 104 | 112 | Natural language processing | 14 | 11 |
| Machine learning | 108 | 79 | Atrial fibrillation | 13 | 10 |
| Sepsis | 102 | 76 | Lactate | 18 | 10 |
| Acute kidney injury | 62 | 45 | All-cause mortality | 8 | 9 |
| Prognosis | 33 | 30 | Data mining | 8 | 9 |
| Deep learning | 35 | 27 | Medical informatics | 16 | 9 |
| Nomogram | 43 | 24 | Mechanical ventilation | 9 | 8 |
| Prediction | 32 | 19 | Prediction model | 19 | 8 |
| Hospital mortality | 20 | 16 | Propensity score matching | 16 | 8 |
| Mortality prediction | 15 | 14 | Septic shock | 8 | 8 |