| often | 2 | temporal |
| lack → cause → insomnia | 19 |
| lack → lead to → insomnia | 18 |
| lack → be associated with → insomnia | 5 |
| lack → be linked to → insomnia | 4 |
| negative | neutral | positive |
| 0.841 | 0.146 | 0.013 |
| Raw frequency | 46 |
| Normalized frequency | 0.595 |
| Modifier score | 0.600 |
| Perplexity | 137.074 |