Table 5.
Clinical factors and outcomes based on identified age cut-off
| Age < 5.4 years | Age > 5.4 years | p-value | |
|---|---|---|---|
| Female Sex | 13/16 (81.3%) | 17/33 (51.5%) | .041 |
| Secondary Moyamoya | 6/16 (37.5%) | 14/33 (42.4%) | .741 |
| Age at Diagnosis (yrs) (Mean±STE) | 2.8±0.8 | 9.8±0.6 | <.00012 |
| Age at Surgery (yrs) (Mean±STE) | 3.1±0.8 | 10.7±0.6 | <.00012 |
| Suzuki Grade | .321 | ||
| 2 | 6 (37.5%) | 12 (36.4%) | |
| 3 | 6 (37.5%) | 9 (27.3%) | |
| 4 | 4 (25%) | 8 (24.2%) | |
| 5 | 0 (0%) | 4 (12.1%) | |
| Presenting Symptom including Stroke | 10/16 (62.5%) | 9/33 (27.3%) | .021 |
| Pre-op PSOM | .033 | ||
| 0 | 6 (37.5%) | 10 (30.3%) | |
| 0.5 | 2 (12.5%) | 11 (33.3%) | |
| 1 | 3 (18.8%) | 10 (30.3%) | |
| 2 | 2 (12.5%) | 2 (6.1%) | |
| 3 | 1 (6.2%) | 0 (0%) | |
| 4.5 | 2 (12.5%) | 0 (0%) | |
| Surgical Approach | .881 | ||
| Combined | 11/16 (68.8%) | 22/33 (66.7%) | |
| Indirect | 5/16 (31.2%) | 11/33 (33.3%) | |
| Good Clinical Outcome4 | 8/16 (50%) | 28/33 (84.9%) | .011 |
| Stable Imaging Outcome5 | 11/14 (78.6%) | 26/30 (86.7%) | .501 |
| 30-day Complications | 3/16 (18.8%) | 4/33 (12.1%) | .541 |
| Postoperative Stroke4 | 3/16 (18.8%) | 3/33 (9.1%) | .351 |
PSOM: Pediatric Stroke Outcomes Measurement; STE: standard error
1-
χ2 test performed for statistical analysis
2-
Fisher t-test performed for statistical analysis
3–
Cochran Armitage Trend Test performed for statistical analysis
4–
Includes both deceased and alive patients by end of follow-up
5–
5 patients without postoperative imaging available for review or were deceased at end of follow-up