Table 2:

Clinical outcome at 1 year (intent-to-treat analysis)

KuopioISATBRAT
Outcome assessment 1 yearSingle neurosurgeonPostal questionnaire filled out by patientsResearch nurse
Definition poor outcomeGOSmRS 3–6mRS 3–6
Poor outcome
    Endovascular12/52 (23%)250/1063 (23.5%)46/198 (23%)
    Surgery19/57 (33%)326/1055 (30.9%)69/205 (34%)
Death
    Endovascular7/52 (13%)85/1063 (8.0%)NA
    Surgery9/57 (16%)105/1055 (9.9%)NA
Rebleeding
    Endovascular
        Day 1–301201a
        Day 31–365060
        >1 year0100
    Surgery
        Day 1–30061
        Day 31–365040
        >1 year03a0
One-year follow-up complete
    Endovascular100%b1063/1073 (99%)198/233 (85%)
    Surgery1055/1070 (98.6%)205/238 (86%)

  • Note:—mRS indicates modified Rankin scale; NA, not available.

  • ↵a Intent-to-treat analysis;

  • ↵b 2 patients excluded after random assignment.