Prevalence of anatomic variations of the CoW in relation to vascular-related abnormalities in a group of 94 infants (16 with a vascular-related abnormality and 78 without)
| With Vascular-Related Abnormality | Without Vascular-Related Abnormality | P Value | |
|---|---|---|---|
| Completeness of CoW | 7 in 16 (43.7%) | 33 in 78 (42.3%) | .564 |
| AcomA absence/hypoplasia | 4 in 16 (25%) | 14 in 78 (17.9%) | .364 |
| PcomA absence/hypoplasia | 6 in 32 (18.8%) | 52 in 156 (33.3%) | .075 |
| A1 segment of ACA absence/hypoplasia | 3 in 32 (9.3%) | 4 in 156 (2.5%) | .097 |
| P1 segment of PCA absence/hypoplasia | 6 in 32 (18.8%) | 5 in 156 (3.2%) | .004* |
| Fetal-type origin of PCA | 9 in 32 (28.1%) | 39 in 156 (25%) | .432 |
| Transitional-configuration origin of PCA | 3 in 32 (9.3%) | 12 in 156 (7.7%) | .487 |
* XXX.