| in some people | 9 | other |
| for some people | 9 | transitive-object |
| at recommended doses | 6 | manner |
| caffeine → cause → headache | 153 |
| caffeine → lead to → headache | 24 |
| caffeine → trigger → headache | 16 |
| caffeine → give → headache | 11 |
| caffeine → have → headache | 9 |
| caffeine → result in → headache | 6 |
| caffeine → include → headache | 5 |
| caffeine → contribute to → headache | 5 |
| caffeine → induce → headache | 5 |
| caffeine → produce → headache | 4 |
| caffeine → promote → headache | 4 |
| caffeine → be linked to → headache | 4 |
| caffeine → worsen → headache | 4 |
| caffeine → be associated with → headache | 3 |
| negative | neutral | positive |
| 0.836 | 0.141 | 0.023 |
| Raw frequency | 253 |
| Normalized frequency | 0.738 |
| Modifier score | 0.625 |
| Perplexity | 28.780 |