Table 3 Results of the responsiveness analysis
Baseline median (IQR) | Post-surgery median (IQR) | Wilcoxon Signed Ranks Test | Effect size (r) | |
|---|---|---|---|---|
Back pain (0–10) | 7.0 (3.0) | 4.0 (4.0) | Z = −8.15, p < .001 | −0.45 |
Leg pain (0–10) | 7.0 (3.0) | 4.0 (5.0) | Z = −7.89, p < .001 | − 0.45 |
Worst pain (0–10) | 8.0 (2.0) | 5.0 (4.0) | Z = −9.27, p < .001 | − 0.52 |
Function (1–5) | 4.0 (1.0) | 3.0 (2.0) | Z = − 8.61, p < .001 | − 0.49 |
Symptom-specific well-being (1–5) | 5.0 (0.0) | 4.0 (2.0) | Z = − 7.08, p < .001 | − 0.40 |
Quality of life (1–5) | 4.0 (2.0) | 3.0 (2.0) | Z = − 8.29, p < .001 | −0.47 |
Social disability (1–5) | 4.0 (2.0) | 3.0 (2.0) | Z = −5.88, p < .001 | −0.33 |
Work disability (1–5) | 2.0 (4.0) | 2.0 (3.0) | Z = − 2.10, p = .039 | −0.12 |
Overall COMI score (0–10) | 7.8 (2.6) | 5.3 (3.6) | Z = − 9.34, p < .001 | −0.53 |