| with excessive daytime sleepiness | 6 | other |
| highly | 4 | degree |
| really | 3 | degree |
| fatigue → be → related | 15 |
| fatigue → be → involved | 3 |
| fatigue → be → associated | 3 |
| fatigue → be → correlated | 3 |
| fatigue → be → linked | 3 |
| fatigue → be → associate | 3 |
| negative | neutral | positive |
| 0.509 | 0.460 | 0.031 |
| Raw frequency | 30 |
| Normalized frequency | 0.611 |
| Modifier score | 0.500 |
| Perplexity | 173.655 |