Table 2:

Differences in imaging characteristics of cysts between responders and nonresponders

RespondersNonrespondersP Value
LFSC size (mean) (SD) (mm)10.1 (3.7)9.3 (2.5).62a
Cyst level (No.) (%).66b
    L1–L21 (2)0 (0)
    L2–L33 (5)1 (17)
    L3–L46 (10)1 (17)
    L4–L535 (60)2 (33)
    L5–S113 (22)2 (33)
MRI central canal stenosis (No.) (%).70b
    None19 (33)2 (33)
    Mild9 (15)0 (0)
    Moderate11 (19)1 (17)
    Severe19 (33)3 (50)
MRI signal intensity (No.) (%).011b
    High T2 with a thin rim39 (72)1 (17)
    High T2 with a thick rim13 (24)5 (83)
    Low T22 (4)0 (0)
CT characteristics (No.) (%).027b
    Calcified14 (24)4 (67)
    Not calcified44 (76)2 (33)

  • ↵a P value based on the 2-sample t test of the difference between means.

  • ↵b P value based on a χ2 test of the difference in proportions.