| rarely | 14 | degree |
| without warning symptoms | 12 | other |
| without warning at any time | 9 | temporal |
| effect → can → occur | 180 |
| effect → can → happen | 42 |
| effect → can → develop | 6 |
| effect → can → arise | 4 |
| negative | neutral | positive |
| 0.575 | 0.367 | 0.058 |
| Raw frequency | 232 |
| Normalized frequency | 0.738 |
| Modifier score | 0.463 |
| Perplexity | 47.409 |