| on the system | 8 | location |
| on our health | 5 | transitive-object |
| on cerebral cortex | 4 | location |
| caffeine → have → effect | 27 |
| caffeine → have → this effect | 5 |
| caffeine → have → what effect | 4 |
| caffeine → have → the effect | 4 |
| caffeine → take → effect | 3 |
| caffeine → have → direct effect | 3 |
| negative | neutral | positive |
| 0.242 | 0.627 | 0.132 |
| Raw frequency | 46 |
| Normalized frequency | 0.611 |
| Modifier score | 0.500 |
| Perplexity | 39.428 |