| often | 3 | temporal |
| allergy → cause → headache | 25 |
| allergy → result in → headache | 5 |
| allergy → lead to → headache | 5 |
| allergy → give → headache | 5 |
| allergy → include → headache | 3 |
| negative | neutral | positive |
| 0.818 | 0.158 | 0.024 |
| Raw frequency | 43 |
| Normalized frequency | 0.623 |
| Modifier score | 0.600 |
| Perplexity | 48.550 |