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| Outcome measure | No subsidence | Subsidence | P value |
|---|---|---|---|
| NDI (n=209) | 106/168 | 21/41 | 0.17 |
| VAS neck pain (n=141) | 52/111 | 13/30 | 0.73 |
| VAS arm pain (n=126) | 48/99 | 14/27 | 0.76 |
MCID, minimal clinically important difference; NDI, Neck Disability Index; VAS, Visual Analogue Scale.
