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Table 3 Within-group NPAD score comparison

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

  Intervention group    Control group   
Questions Pre-intervention Post-intervention    Pre-intervention Post-intervention   
  Mean Rank Sum of Ranks Mean Rank Sum of Ranks d P-value* Mean Rank Sum of Ranks Mean Rank Sum of Ranks d P-value*
How bad is your pain today? 6.00 66.00 0 0 1.56 0.003 7.00 28.00 6.25 50.00 0.52 0.380
How bad is your pain on the average? 6.00 66.00 0 0 1.50 0.003 0 0 0 0 0 1.000
How bad is your pain at its worst? 6.50 78.00 0 0 1.60 0.002 1.50 3.00 0 0 0.89 0.157
Does your pain interfere with your sleep? 5.00 45.00 0 0 1.31 0.007 2.00 2.00 1.00 1.00 0.26 0.655
How bad is your pain with standing? 5.00 45.00 0 0 1.31 0.007 0 0 0 0 0 1.000
How bad is your pain with walking? 4.42 26.50 1.50 1.50 0.96 0.034 0 0 0 0 0 1.000
Does your pain interfere with driving or riding in a car? 6.15 61.50 4.50 4.50 1.28 0.008 2.50 2.50 2.50 7.50 0.60 0.317
Does your pain interfere with social activities? 5.44 43.50 1.50 1.50 1.18 0.012 0 0 1.00 1.00 0.60 0.317
Does your pain interfere with recreational activities? 4.50 36.00 0 0 1.23 0.010 0 0 0 0 0 1.000
Does your pain interfere with work activities? 6.50 78.00 0 0 1.62 0.002 0 0 1.00 1.00 0.60 0.317
Does your pain interfere with your personal care (eating, dressing, bathing, etc.)? 6.05 60.50 5.50 5.50 1.16 0.014 0 0 1.00 1.00 0.60 0.317
Does your pain interfere with your personal relationship (family, friends, sex, etc.)? 5.94 53.50 1.50 1.50 1.29 0.008 0 0 1.50 3.00 0.89 0.157
How does your pain change your outlook on life and future (depression, hopelessness)? 5.50 55.00 0 0 1.40 0.005 3.00 3.00 1.50 3.00 0 1.000
Does your pain affect your emotions? 3.50 21.00 0 0 1.00 0.027 2.25 4.50 1.50 1.50 0.48 0.414
Does your pain affect your ability to think or concentrate? 6.50 78.00 0 0 1.60 0.002 2.50 2.50 2.50 7.50 0.60 0.317
How stiff is your neck? 6.00 66.00 0 0 1.54 0.003 1.00 1.00 0 0 0.60 0.317
How much trouble do you have turning your neck? 6.00 66.00 0 0 1.51 0.003 2.25 4.50 1.50 1.50 0.48 0.414
How much trouble do you have turning your neck (look up and down)? 6.50 78.00 0 0 1.61 0.002 1.50 3.00 0 0 0.89 0.157
How much trouble do you have working overhead? 6.00 60.00 6.00 6.00 1.14 0.015 4.50 18.00 6.86 48.00 0.83 0.178
How much do pain pills help? 6.50 65.00 6.50 13.00 0.92 0.040 3.50 10.50 3.50 10.50 0 1.000
Total NPAD score, MD (95% CI) 61.67 ± 6.56 25.33 ± 6.814 -36.33 (-43.23, -29.43) -3.34  < 0.001 68.25 ± 23.36 67.08 ± 21.37 1.16 (-1.79, 4.13) 0.047 0.405
  1. *P < 0.05, All P-values are obtained from Wilcoxon signed-rank test except for total NPAD score obtained from paired samples t-test
  2. Significant P-values are showed in bold
  3. MD, Mean Difference, APAD, Neck Pain and Disability, d, Effect size (Cohen’s d)