Table 3 Outcome measures
|  | Baseline (T0) (n = 247) | 2-week FU (T2) (n = 233) | 3-month FU (T3) (n = 240) |
|---|---|---|---|
Primary outcome measure | |||
 Pain severity | |||
  Mean ± SD | 6.9 ± 1.7 | 3.7 ± 2.4 | 2.1 ± 2.3 |
  LBP recovery (NRS ≤ 2) | 4 (2%) | 48 (21%) | 126 (53%) |
  LBP non-recovery (NRS > 2) | 243 (98%) | 185 (79%) | 114 (47%) |
  Missing | n = 0 | n = 14 | n = 7 |
Secondary outcome measures | |||
 Pain severity | |||
  LBP recovery (NRS ≤ 1) | 2 (1%) | 16 (7%) | 87 (36%) |
  LBP non-recovery (NRS > 1) | 245 (99%) | 217 (93%) | 153 (64%) |
  Missing | n = 0 | n = 14 | n = 7 |
 Pain acceptance | |||
  Yes | 19 (8%) | 96 (44%) | 197 (82%) |
  No | 228 (92%) | 123 (56%) | 43 (18%) |
  Missing | n = 0 | n = 28 | n = 7 |
 Global perceived effect | |||
    (Very) much improved | n/a | 151 (69%) | 199 (83%) |
  Not much improved |  | 68 (31%) | 41 (17%) |
  Missing |  | n = 28 | n = 7 |