| usually | 4 | degree |
| to reach underserved populations | 3 | purpose |
| vaccine → take → year | 12 |
| vaccine → take → long time | 8 |
| vaccine → take → several months | 5 |
| vaccine → take → several years | 4 |
| negative | neutral | positive |
| 0.440 | 0.466 | 0.094 |
| Raw frequency | 29 |
| Normalized frequency | 0.309 |
| Modifier score | 0.817 |
| Perplexity | 112.666 |