Table 3.
Comparisons of VAS、ODI, and preoperative radiological parameters between patients between group N and group R.
| Parameter | Group N (n = 231) | Group R (n = 37) | t/χ2 | P value |
|---|---|---|---|---|
| VAS | 6.41 ± 0.834 | 6.57 ± 0.647 | −1.088 | 0.277 |
| ODI | 63.96 ± 11.35 | 64.51 ± 9.52 | −0.283 | 0.778 |
| AVH (mm) | 15.12 ± 3.07 | 15.04 ± 2.96 | 0.155 | 0.877 |
| AVHR (%) | 49.82 ± 10.24 | 49.65 ± 10.13 | 0.095 | 0.924 |
| Cobb angle (°) | 27.34 ± 7.25 | 26.81 ± 8.26 | 0.403 | 0.687 |
| IVC | ||||
| No (cases) | 217 (93.9%) | 31 (83.8%) | 4.763 | 0.029 |
| Yes (cases) | 14 (6.1%) | 6 (16.2%) | ||
| Posterior fascia oedema | ||||
| No (cases) | 219 (94.8%) | 31 (83.8%) | 6.183 | 0.013 |
| Yes (cases) | 12 (5.2%) | 6 (16.2%) | ||
| Paraspinal muscle degeneration | ||||
| Goutallier grade 0-1 | 92 (39.8%) | 3 (8.1%) | 24.83 | ≤0.001 |
| Goutallier grade 2 | 94 (40.7%) | 14 (37.8%) | ||
| Goutallier grade 3-4 | 45 (19.5%) | 20 (54.1%) | ||