Baseline variables
| Total | Reduction of Choroidal Anastomosis | P Value | ||
|---|---|---|---|---|
| Yes | No | |||
| No. of hemispheres | 80 | 68 | 12 | NA |
| Revascularization area (mean) (%)a | ||||
| Posterior to CS | 13.6 (SD, 7.7) | 15.2 (SD, 7.1) | 4.2 (SD, 3.4) | <.001 |
| Anterior to CS | 12.6 (SD, 7.0) | 12.5 (SD, 6.7) | 13.2 (SD, 8.9) | .74 |
| Median age (yr) (IQR) | 12 (8–36) | 11 (8–33) | 19.5 (5.25–47.5) | .57 |
| Female (%) | 47 (58.8) | 43 (63.2) | 4 (33.3) | .05 |
| Hemorrhagic presentation (%) | 17 (21.3) | 12 (17.7) | 5 (41.7) | .06 |
| Median Suzuki stage (IQR) | 3 (3–3) | 3 (3–3) | 3 (2–3) | .33 |
| PCA involvement (%) | 10 (12.5) | 10 (14.7) | 0 | .34 |
| SPECT stage 2 | ||||
| MCA territory (%) | 37 (46.3) | 32 (47.1) | 5 (41.7) | .73 |
| Posterior MCA territory (%) | 27 (33.8) | 25 (36.8) | 2 (16.7) | .17 |
| Addition of EMS (%) | 21 (26.3) | 16 (23.5) | 5 (41.7) | .19 |
Note:—EMS indicates encephalomyosynangiosis; IQR, interquartile range; NA, not applicable.
↵a Percentage relative to whole supratentorial area.