| in the absence of sleep | 5 | temporal |
| often | 3 | temporal |
| insomnia → lead to → fatigue | 13 |
| insomnia → cause → fatigue | 13 |
| insomnia → result in → fatigue | 3 |
| insomnia → be caused by → fatigue | 3 |
| negative | neutral | positive |
| 0.797 | 0.174 | 0.029 |
| Raw frequency | 32 |
| Normalized frequency | 0.505 |
| Modifier score | 0.667 |
| Perplexity | 51.142 |