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NRS score results of age- and gender-matched patients with one level injected compared to those having more than one spinal level injected within the group of non-responders (telephone patients)
| Baseline data and outcomes | 1 level injected, mean + (SD) | 2 or more levels injected, mean + (SD) | 1 vs. > 2 levels (p) |
|---|---|---|---|
| Pre NRS (baseline) | 6.5 + (2.5) | 7.8 + (2.3) | 0.03 |
| 20-30-min NRS | 3.5 + (2.9)* | 4.8 + (2.7)* | 0.053 |
| 1-month NRS | 5.4 + (3.1)* | 5.2 + (2.5)* | 0.765 |
*p < 0.05 compared to the baseline score
