Table 5.
Dichotomous logistic regression analysis of various variables between the 2 groups
| Variable | Favorable group (n = 48) | Unfavorable group (n = 34) | OR or difference | 95% CI | p-value |
|---|---|---|---|---|---|
| Surgical level, L3–4:L4–5:L5–S1 | 2:16:30 | 4:6:24 | - | - | 0.386† |
| Pfirrmann grade, I:II:III:IV | 0:14:26:8 | 0:8:24:2 | - | - | 0.504† |
| Disc height ratio to vertebral body | 0.38 ± 0.10 | 0.39 ± 0.08 | 0.01 ± 0.09 | -0.102 to 0.111 | 0.917‡ |
| High intensity zone, n (%) | 24 (50.0) | 4 (11.8) | 7.52 | 1.401–40.0 | 0.011† |
| Morphology of lesion, bulging:protruded:extruded | 6:22:20 | 4:24:6 | - | - | 0.190† |
| Location of herniation, central:right:left | 14:10:24 | 12:10:12 | - | - | 0.517† |
| Degree of canal compromise, mild:moderate:severe | 30:18:0 | 30:4:0 | 4.82 | 0.884–26.300 | 0.055† |
| Degree of nerve compression, abutting:displace:near obliteration:obliteration | 16:24:6:2 | 26:4:4:0 | - | - | 0.048† |
| Herniated disc volume (mm3) | 33.14 ± 11.52 | 38.25 ± 8.96 | 5.11 ± 10.52 | -7.56 to 18.59 | 0.854‡ |
| Degree of stenosis, none:mild:moderate:severe | 32:14:2:0 | 22:12:0:0 | - | - | 0.667† |
| Adhesion, mild:moderate:severe | 3:13:32 | 2:9:23 | - | - | 0.749† |
Values are presented as number or mean±standard deviation unless otherwise indicated.
OR, odds ratio; CI, confidence interval.
†
Pearson chi-square test.
‡
Independent t-test.