| very | 6 | degree |
| sometimes | 4 | degree |
| in patients with acute prca | 3 | other |
| anemia → be → severe | 90 |
| anemia → become → severe | 16 |
| anemia → be moderate to → severe | 3 |
| anemia → vary to → severe | 3 |
| negative | neutral | positive |
| 0.629 | 0.347 | 0.023 |
| Raw frequency | 112 |
| Normalized frequency | 0.877 |
| Modifier score | 0.300 |
| Perplexity | 182.059 |