Table 2.
Improvements in VAS score and ODI score
| Variable | PVP Group | PKP Group | t/x2 | p Value |
|---|---|---|---|---|
| VAS scores | ||||
| Preoperative | 6.0 ± 1.1 | 5.8 ± 1.2 | 0.703 | 0.485 |
| Postoperative | 2.4 ± 0.8a | 2.4 ± 0.7a | 0.013 | 0.989 |
| Final follow-up | 2.1 ± 0.6bc | 2.0 ± 0.6bc | 0.252 | 0.802 |
| ODI scores (%) | ||||
| Preoperative | 68.9 ± 5.8 | 67.8 ± 7.1 | 0.635 | 0.528 |
| Postoperative | 30.0 ± 5.7a | 29.6 ± 5.1a | 0.315 | 0.754 |
| Final follow-up | 29.0 ± 4.2bc | 27.4 ± 3.6bc | 1.577 | 0.121 |
a: p<0.001(comparison with preoperative); b: p>0.05(comparison with postoperative); c: p<0.001 (comparison of final follow-up with preoperative)