| about its safety | 12 | other |
| often | 6 | temporal |
| about the safety of vaccines | 4 | other |
| parent → have → doubt | 41 |
| parent → express → doubt | 9 |
| parent → raise → doubt | 3 |
| negative | neutral | positive |
| 0.471 | 0.460 | 0.069 |
| Raw frequency | 53 |
| Normalized frequency | 0.422 |
| Modifier score | 0.611 |
| Perplexity | 120.011 |