Table 3:

Diagnosis as determined by digital subtraction angiography

AllMenWomen
Diagnosis after initial DSA
    No causative lesion201 (87%)110 (55%)a91 (45%)
    Aneurysm12 (5%)3 (25%)9 (75%)
    Arteriovenous malformation2 (1%)1 (50%)1 (50%)
    Arteriovenous fistula1 (0.5%)1 (100%)0 (0%)
    Vasculitis/vasculopathy15 (7%)3 (21)b11 (79%)

  • ↵a P = .01 by Fisher exact test.

  • ↵b P = .03 by Fisher exact test.