| often | 11 | temporal |
| due to off-target | 6 | cause |
| in some people | 5 | location |
| drug → cause → headache | 92 |
| drug → have → headache | 29 |
| drug → be associated with → headache | 12 |
| drug → produce → headache | 11 |
| drug → lead to → headache | 10 |
| drug → come with → headache | 5 |
| drug → include → headache | 5 |
| drug → give → headache | 4 |
| drug → induce → headache | 3 |
| negative | neutral | positive |
| 0.840 | 0.142 | 0.018 |
| Raw frequency | 171 |
| Normalized frequency | 0.539 |
| Modifier score | 0.574 |
| Perplexity | 266.209 |