| for at least three months | 4 | temporal |
| for decades | 4 | temporal |
| to treat acid reflux | 3 | purpose |
| patient → take → ppi | 19 |
| patient → use → ppi | 6 |
| patient → be treated with → ppi | 5 |
| patient → receive → ppi | 3 |
| negative | neutral | positive |
| 0.404 | 0.515 | 0.082 |
| Raw frequency | 33 |
| Normalized frequency | 0.421 |
| Modifier score | 0.600 |
| Perplexity | 156.561 |