Prevalence and grading of imaging findings measured on dichotomous and ordinal scales
| Imaging Feature (Grading Range) | Frequency of Different Grading (No.) (%)a | Sample (No.) | |||
|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | ||
| Sylvian fissure ordinal (0–2) | 23 (21) | 77 (71) | 8 (8) | NA | 108 |
| DESH (0–1) | 36 (33) | 72 (67) | NA | NA | 108 |
| Flow void (0–3)b | 0 (0) | 0 (0) | 9 (25) | 27 (75) | 36 |
| Narrow sulci (0–2) | 24 (22) | 22 (20) | 62 (58) | NA | 108 |
| Focal bulging (0–1) | 13 (12) | 95 (88) | NA | NA | 108 |
| DWMH (0–3) | 5 (5) | 11 (10) | 31 (29) | 60 (56) | 107 |
| PVH (0–2) | 27 (25) | 66 (62) | 14 (13) | NA | 107 |
| Focally enlarged sulci (0–1) | 45 (42) | 63 (58) | NA | NA | 108 |
| Aqueductal stenosis (0–1) | 105 (97) | 3 (3) | NA | NA | 108 |