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Axial symptom severity (NDI scores) in each group
| Axial symptoms | Group LP (n = 36) | Group LC (n = 30) | Group LCS (n = 32) | Statistic value | P value |
|---|---|---|---|---|---|
| NDI scoresa | 9.92 (0–28) | 14.07 (1–37) | 4.97 (0–17) | 18.04 | <0.001 |
| NDI ranking systemb | |||||
| No disability | 12 (33.3 %) | 7 (23.3 %) | 20 (62.5 %) | 15.99 | <0.001 |
| Mild disability | 16 | 9 | 10 | ||
| Moderate disability | 7 | 10 | 2 | ||
| Severe disability | 1 | 3 | 0 | ||
| Complete disability | 0 | 1 | 0 | ||
aKruskal–Wallis nonparametric ANOVA
bCochran-Mantel–Haenszel statistics (based on rank scores)
