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Comparison of “Failed Back Surgery” & “Primary Surgery” outcomes
| FBS Group | Preoperative VAS | Review VAS | Preoperative ODI | Review ODI |
|---|---|---|---|---|
| Mean | 7.6 | 2.2 | 60.8 | 16.3 |
| S.D | 1.9 | 2.0 | 15.3 | 14.7 |
| Primary Surgery | Preoperative VAS | Review VAS | Preoperative ODI | Review ODI |
| Mean | 7.0 | 2.6 | 56.3 | 18.6 |
| S.D | 1.7 | 2.2 | 13.9 | 15.8 |
