| extremely | 7 | degree |
| in children | 5 | other |
| compared to aortic or iliac aneurysms | 4 | other |
| aneurysm → be → rare | 15 |
| aneurysm → be → uncommon | 5 |
| aneurysm → be → unusual | 4 |
| negative | neutral | positive |
| 0.312 | 0.599 | 0.089 |
| Raw frequency | 24 |
| Normalized frequency | 0.505 |
| Modifier score | 0.500 |
| Perplexity | 37.284 |