| on the participants | 11 | transitive-object |
| often | 5 | temporal |
| on disorders | 4 | transitive-object |
| placebo → have → effect | 20 |
| placebo → have → positive effect | 12 |
| placebo → have → some effect | 4 |
| placebo → have → much effect | 3 |
| negative | neutral | positive |
| 0.238 | 0.476 | 0.286 |
| Raw frequency | 39 |
| Normalized frequency | 0.699 |
| Modifier score | 0.600 |
| Perplexity | 147.662 |