MIC and PASSa values used in the study.
| Outcome Measure | MIC | PASS Level | Comment |
| Leg pain NRS (0–10) | 3.5 | 2 | NRS |
| Back pain NRS (0–10) | 2.5 | 2 | NRS |
| Oswestry Disability Index (0–100) | −20 | 22 | Composite score |
Abbreviations: MIC, minimal important change; NRS, numerical rating scale; PASS, patient acceptable symptom state.
↵a PASS indicates the highest score on that scale that is acceptable to a generalized population.