| to depression | 9 | other |
| to another medical or psychological condition | 6 | other |
| often | 3 | degree |
| insomnia → be → secondary | 28 |
| insomnia → be → intermittent | 8 |
| negative | neutral | positive |
| 0.423 | 0.527 | 0.050 |
| Raw frequency | 36 |
| Normalized frequency | 0.530 |
| Modifier score | 0.667 |
| Perplexity | 281.774 |