Comparison of myelographic appearance of spinal meningeal diverticula
| Control | SIH | P Valuea | |
|---|---|---|---|
| Morphology | |||
| Round (No.) (%) | 20 (51) | 62 (52) | .946 |
| Multilobulated (No.) (%) | 19 (49) | 57 (48) | |
| Size | |||
| 0–3 mm (No.) (%) | 9 (23) | 22 (18) | .711 |
| 4–6 mm (No.) (%) | 23 (59) | 71 (60) | |
| >6 mm (No.) (%) | 7 (18) | 26 (22) | |
| Location | |||
| Cervical (No.) (%) | 2 (5) | 4 (3) | 0.050 |
| Upper thoracic (No.) (%) | 6 (15) | 33 (28) | |
| Lower thoracic (No.) (%) | 29 (75) | 65 (55) | |
| Lumbar (No.) (%) | 2 (5) | 17 (14) |
↵a P value based on the generalized estimating equations test of the difference between groups in proportions in morphologic categories while accounting for multiple observations per patient.