| for three | 7 | temporal |
| frequently | 5 | temporal |
| stress → cause → migraine | 20 |
| stress → lead to → migraine | 10 |
| stress → trigger → migraine | 6 |
| stress → be linked to → migraine | 4 |
| stress → contribute to → migraine | 3 |
| stress → trigger → migraine attacks | 3 |
| negative | neutral | positive |
| 0.785 | 0.200 | 0.015 |
| Raw frequency | 46 |
| Normalized frequency | 0.484 |
| Modifier score | 0.800 |
| Perplexity | 43.947 |