Table 3:
Prevalence of spinal meningeal diverticula and prominent nerve sheaths
| Control | SIH | P Value | |
|---|---|---|---|
| Patients with diverticula present (No.) (%) | 8 (44) | 13 (68) | .141a |
| Diverticula per patient (mean) | 2.2 (3.3) | 6.3 (8.0) | .099b |
| Min/median/max | 0/0/10 | 0/2/23 | |
| Patients with prominent nerve sheaths present (No.) (%) | 14 (78) | 17 (89) | .405c |
| Prominent nerve sheaths per patient (mean) | 2.6 (3.1) | 6.1 (4.2) | .004c |
| Min/median/max | 0/1.5/13 | 0/5/15 |
Note:—Min indicates minimum; max, maximum.
a
P value based on a χ2 test of the difference between proportions.
b
P value based on the Wilcoxon rank sum test of the difference between medians.
c
P value based on the Fisher exact test of the difference between proportions.