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Table 5 Correlations between change scores and levels that increased range above MDC in flexion or extension

From: Does inter-vertebral range of motion increase after spinal manipulation? A prospective cohort study

Measure/range Baseline (SD) Follow-up (SD) Sig (p) † % change (95% CI) Correlation % change and increased IV-RoM* Sig (p)
NRS/10 5 (1.5) 2 (1.6) p < 0.0001 52% 0.02 (−0.350- 0.383) 0.92
(40.6-63.4)
NDI/50 13 (6.7) 6 (4.9) p < 0.0001 48% 0.12 (−0.260- 0.464) 0.54
(36.2- 59.8)
EQ-5D VAS/100 75 (15.5) 84 (14.9) p = 0.001 6% −0.12 (−0.465- 0.259) 0.54
(−10.0- 22.0)
EQ-5D Index 0.74 (0.10) 0.82 (0.11) p < 0.0001 9% −0.19 (−0.518- 0.192) 0.33
(4.4- 13.6)
PGIC/-10 to +10 - - - 87% improved** −0.05 (−0.407- 0.325) 0.81
  1. Wilcoxon signed rank test; , Spearman’s rank correlation coefficient.
  2. *Increased IV-RoM = number of inter-vertebral levels increased in range above MDC **At least 30% improvement.