| by environmental factors | 3 | cause |
| in origin | 2 | other |
| sinusitis → be → allergic | 5 |
| sinusitis → not is triggered by → allergic reactions | 3 |
| negative | neutral | positive |
| 0.708 | 0.284 | 0.008 |
| Raw frequency | 8 |
| Normalized frequency | 0.257 |
| Modifier score | 0.500 |
| Perplexity | 337.236 |