| occasionally | 11 | degree |
| in some cases | 9 | temporal |
| to correct their problem | 8 | purpose |
| patient → require → surgery | 81 |
| patient → need → surgery | 71 |
| patient → need → this surgery | 5 |
| negative | neutral | positive |
| 0.362 | 0.540 | 0.099 |
| Raw frequency | 157 |
| Normalized frequency | 0.732 |
| Modifier score | 0.622 |
| Perplexity | 194.431 |