| Typicality: | 0.404 |
| Saliency: | 0.512 |
| often | 17 | temporal |
| very | 7 | degree |
| during the disease’s early stages | 5 | temporal |
| symptom → be difficult to → recognize | 38 |
| symptom → be difficult to → distinguish | 28 |
| symptom → be difficult to → identify | 26 |
| symptom → be hard to → identify | 12 |
| symptom → be difficult to → differentiate | 9 |
| symptom → be hard to → recognize | 7 |
| symptom → be hard to → distinguish | 5 |
| symptom → be tough to → recognize | 3 |
| symptom → be difficult to → discern | 3 |
| symptom → be difficult to → recognise | 3 |
| negative | neutral | positive |
| 0.707 | 0.270 | 0.023 |
| Raw frequency | 134 |
| Normalized frequency | 0.512 |
| Modifier score | 0.571 |
| Perplexity | 18.847 |