| by itself | 35 | manner |
| alone | 31 | manner |
| sometimes | 9 | degree |
| insomnia → be → condition | 79 |
| insomnia → be → malady | 65 |
| insomnia → be → medical condition | 10 |
| insomnia → be → disease | 8 |
| insomnia → be → medical reason | 6 |
| insomnia → be related to → medical or psychiatric condition | 3 |
| insomnia → be → the condition | 3 |
| negative | neutral | positive |
| 0.743 | 0.230 | 0.028 |
| Raw frequency | 174 |
| Normalized frequency | 0.866 |
| Modifier score | 0.411 |
| Perplexity | 64.342 |