| especially | 4 | degree |
| in duration | 2 | temporal |
| of worsening in severity | 2 | other |
| episode → be → frequent | 32 |
| episode → become → frequent | 4 |
| negative | neutral | positive |
| 0.445 | 0.474 | 0.081 |
| Raw frequency | 36 |
| Normalized frequency | 0.368 |
| Modifier score | 0.500 |
| Perplexity | 129.731 |