| for driving | 6 | purpose |
| relatively | 4 | degree |
| in terms of the effects | 3 | other |
| insomnia → be → acute | 29 |
| insomnia → be → severe | 26 |
| insomnia → be → serious | 10 |
| insomnia → be → serious condition | 5 |
| negative | neutral | positive |
| 0.526 | 0.400 | 0.073 |
| Raw frequency | 70 |
| Normalized frequency | 0.672 |
| Modifier score | 0.400 |
| Perplexity | 107.785 |