| due to smoking | 3 | cause |
| rapidly | 2 | manner |
| day by day | 2 | temporal |
| symptom → can → worsen | 12 |
| symptom → be → worsened | 5 |
| symptom → worsen to → the point | 3 |
| symptom → worsen in → fact | 3 |
| symptom → could → worsen | 3 |
| negative | neutral | positive |
| 0.844 | 0.144 | 0.012 |
| Raw frequency | 26 |
| Normalized frequency | 0.393 |
| Modifier score | 0.800 |
| Perplexity | 60.838 |