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Table 4 Size effect. Clinical significance of the interventions with respect to the control group

From: Manual therapy versus therapeutic exercise in non-specific chronic neck pain: a randomized controlled trial

  R2
Week 1
R2
Week 4
R2
Week 12
Manual therapy VAS 0.094 0.373 0.270
Therapeutic exercise VAS 0.113 0.496 0.209
Manual therapy NDI 0.283 0.543 0.569
Therapeutic exercise NDI 0.430 0.629 0.459
Manual therapy PPT 0.001 0.265 0.214
Therapeutic exercise PPT 0.006 0.082 0.328
  1. VAS visual analog scale, NDI Neck Disability Index, PPT pressure pain threshold. R2 0.01 (small), 0.06 (medium), 0.14 (large)