| for long | 18 | temporal |
| for years | 13 | temporal |
| in combination | 12 | manner |
| patient → take → drug | 223 |
| patient → take → the drug | 164 |
| patient → taken → the drug | 5 |
| patient → take → drugs | 3 |
| negative | neutral | positive |
| 0.468 | 0.452 | 0.080 |
| Raw frequency | 395 |
| Normalized frequency | 0.857 |
| Modifier score | 0.712 |
| Perplexity | 52.738 |