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Pain, disability and number of drug classes in the first 6 months of standard therapy in nine non-responder FBSS patients
| T0 | T2 | T6 | p | |
| Lumbar Pain (NRS) | 5 (5-7) | 3 (2.75-4)* | 5 (4-6) | <0.001 |
| Radicular Pain (NRS) | 8 (7-9.25) | 5 (4-6)* | 8 (7-9) | <0.001 |
| Disability (ODI) | 62 (52-70.5) | 40 (32-54)* | 44 (35.5-56)* | <0.001 |
| no. drug classes | 2 (2-3) | 4 (4-5)* | 4 (4-5)* | <0.001 |
Values are medians *: p <0.01 with respect to T0.
