| usually | 15 | degree |
| very | 9 | degree |
| to be chronic | 9 | other |
| symptom → be → acute | 146 |
| symptom → become → acute | 9 |
| symptom → include whether → acute | 3 |
| symptom → have → acute onset | 3 |
| symptom → include → acute | 3 |
| negative | neutral | positive |
| 0.464 | 0.471 | 0.064 |
| Raw frequency | 164 |
| Normalized frequency | 0.539 |
| Modifier score | 0.741 |
| Perplexity | 36.492 |