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Table 6 NDI total score interpretations by Intervention and control groups pre and post-intervention

From: Effectiveness of isometric exercises on disability and pain of cervical spondylosis: a randomized controlled trial

  Pre-intervention Post-intervention  
Disability* Intervention group
N (%)
Control group
N (%)
Total
N (%)
Intervention group
N (%)
Control group
N (%)
Total
N (%)
No disability 1.0 (8.3) 0 (0) 1.0 (4.2) 1.0 (8.3) 0 (0) 1.0 (4.1)
Mild 0 (0) 2.0 (16.7) 2.0 (8.3) 2.0 (16.7) 2.0 (16.7) 4.0 (16.7)
Moderate 2.0 (16.7) 4.0 (33.3) 6.0 (25.0) 8.0 (66.7) 4.0 (33.3) 12.0 (50.0)
Severe 8.0 (66.7) 3.0 (25.0) 11.0 (45.8) 1.0 (8.3) 3.0 (25.0) 4.0 (16.7)
Complete 1.0 (8.3) 3.0 (25.0) 4.0 (16.7) 0 (0) 3.0 (25.0) 3.0 (12.7)
  1. *No disability, 0–4; mild, 5–14; moderate, 15–24; severe, 25–34; complete, above 34