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Table 3 Proportion of improvement in primary clinical outcomes of NDI and DHI in each group

From: Chiropractic treatment including instrument-assisted manipulation for non-specific dizziness and neck pain in community-dwelling older people: a feasibility randomised sham-controlled trial

Sham group (n = 10) Chiropractic group (n = 12)
% Improvement MCID* 30% 50% MCID* 30% 50%
NDI 30% 10% 0% 58% 33% 25%
% Improvement MCID* 30% 50% MCID* 30% 50%
DHI 50% 40% 20% 67% 33% 25%
  1. *Minimal Clinically Important Difference (MCID) for NDI is 19% [48] and for DHI is 18% [56]