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| Outcome variable | Preoperative | Latest follow-up | p Value |
|---|---|---|---|
| VAS backa | 6.4 ± 0.6 | 3.1 ± 0.6 | <0.001b |
| VAS buttocka | 4.6 ± 0.5 | 1.9 ± 0.5 | 0.002b |
| VAS lega | 4.5 ± 0.5 | 1.9 ± 0.5 | <0.001b |
| Oswestry Disability Indexa | 44.0 ± 3.2 | 24.2 ± 3.8 | <0.001b |
Results are mean ± standard error.
p values <0.05 are considered to be statistically significant.
