| to treat chronic headaches | 2 | purpose |
| effectively | 2 | manner |
| therapy → cause → fatigue | 7 |
| therapy → reduce → fatigue | 7 |
| therapy → improve → fatigue | 4 |
| therapy → be used to treat → fatigue | 3 |
| negative | neutral | positive |
| 0.301 | 0.375 | 0.324 |
| Raw frequency | 21 |
| Normalized frequency | 0.343 |
| Modifier score | 0.800 |
| Perplexity | 84.092 |