Table 3.
Factors associated with ODI.
| Associated Factor | Change in ODI | p-Value | % Change in ODI | p-Value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of the Target Disc | One | Two | One | Two | ||||||
| 24.4 (7.5) | 15.6 (24.0) | 0.32 | 75.9 (27.7) | 34.3 (46.1) | 0.17 | |||||
| MRI grade | G4 | G5 | G6 | G4 | G5 | G6 | ||||
| 21.7 (16.5) | 19.0 (14.2) | 24.3 (3.0) | 0.94 | 61.6 (42.3) | 43.0 (23.0) | 90.0 (14.1) | 0.5 | |||
| Modic change | - | + | - | + | ||||||
| 19.4 (12.1) | 34.5 (23.3) | 0.52 | 57.3 (38.6) | 95.0 (7.1) | <0.05 | |||||
| Disc bulge | - | + | - | + | ||||||
| 25.1 (19.5) | 20.2 (12.3) | 0.66 | 76.9 (39.7) | 57.0 (37.9) | 0.43 | |||||
| Anterior HIZ | - | + | - | + | ||||||
| 15.1 (13.0) | 18.0 (13.0) | 0.54 | 73.8 (40.0) | 39.0 (19.9) | 0.06 | |||||
| Posterior HIZ | - | + | - | + | ||||||
| 33.9 (14.8) | 18.1 (12.4) | 0.2 | 100 (0) | 52.0 (36.6) | 0.05 | |||||
| Group | CS | PRPr | CS | PRPr | ||||||
| 13.9 (9.7) | 26.5 (14.8) | 0.09 | 42.4 (31.5) | 76.0 (37.6) | 0.11 | |||||
Change (baseline − Post 12 M) and % change ([baseline − Post 12 M]/baseline × 100) in Oswestry Disability Index (ODI) [32] of each associated factor are shown. MRI grade was evaluated by modified Pfirrmann [11] grading system. HIZ: high-intensity zone. Number in parentheses indicates standard deviation (SD).