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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

Ā 

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)