| Typicality: | 0.417 |
| Saliency: | 0.399 |
| gradually | 39 | manner |
| usually | 19 | temporal |
| in many cases | 5 | temporal |
| symptom → develop over → a period of time | 15 |
| symptom → develop over → several years | 12 |
| symptom → develop over → many years | 8 |
| symptom → develop over → a number of years | 5 |
| symptom → develop over → long time | 5 |
| symptom → develop over → long period of time | 4 |
| symptom → develop over → a period of years | 3 |
| symptom → develop → many years | 3 |
| symptom → develop over → longer period of time | 3 |
| negative | neutral | positive |
| 0.529 | 0.446 | 0.025 |
| Raw frequency | 58 |
| Normalized frequency | 0.399 |
| Modifier score | 0.761 |
| Perplexity | 25.028 |