| often | 18 | temporal |
| about their risk of periodontal disease | 11 | other |
| about dentists | 11 | other |
| patient → be → concerned | 120 |
| patient → be → worried | 23 |
| negative | neutral | positive |
| 0.332 | 0.505 | 0.163 |
| Raw frequency | 143 |
| Normalized frequency | 0.743 |
| Modifier score | 0.633 |
| Perplexity | 66.777 |