Event rate and outcomesa
| Events and Outcomes | Bilateral Group | Unilateral Group | P Value | |
|---|---|---|---|---|
| Simultaneous (n = 24) | Staged (n = 6) | Control (n = 175) | ||
| Hyperperfusion syndrome | 4 | 0 | 5 | .036 |
| Hemodynamic depression | 7 | 3 | 49 | .505 |
| 6-month event | ||||
| Minor stroke | 2 (2) | 0 | 8 (6) | 1.000 |
| Major stroke | 0 | 0 | 4 (4) | 1.000 |
| Death | 1 | 0 | 7 (2) | .550 |
| 6-month outcome | ||||
| mRs ≤2 | 23 | 6 | 158 | .830 |
| mRs >2 | 1 | 0 | 17 | |
| Restenosis | 3/36 (8.3%) | 0/12 | 9/132 (6.8%) | .321 |
| Total deaths | 1 | 0 | 7 | .676 |
a The number in parentheses in a 6-month event refers to a 1-month event.