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Table 5 Distribution of the change in the MOS sleep problems index according to the change in health status (N = 356)

From: Evaluation of the reliability and validity of the Medical Outcomes Study sleep scale in patients with painful diabetic peripheral neuropathy during an international clinical trial

   Change in scores of the
MOS sleep problems index
   N Mean STD ES SRM p(change = 0)
Change in mean sleep interference score
p(KW) < 0.0001
Much improved (-10 to -4) 77 -25.90 20.41 -1.42 -1.33 <0.0001
  Minimally improved (-4 to -1) 171 -12.00 17.54 -0.68 -0.70 <0.0001
  No change (-1 to +1) 83 -7.01 18.73 -0.27 -0.31 0.0005
  Worse (+1 to +10) 25 -3.12 18.97 -0.22 -0.22 0.3603
Change in mean pain score
p(KW) < 0.0001
Much improved (-10 to -4) 76 -22.91 21.07 -1.20 -1.16 <0.0001
  Minimally improved (-4 to -1) 145 -14.37 19.49 -0.75 -0.74 <0.0001
  No change (-1 to +1) 119 -5.71 16.99 -0.28 -0.32 0.0003
  Worse (+1 to +10) 16 -12.63 15.66 -0.64 -0.81 0.0065
Clinician global impression of change
p(KW) < 0.0001
Very much improved 30 -28.27 20.68 -1.41 -1.41 <0.0001
  Much improved 127 -20.07 18.78 -1.13 -1.11 <0.0001
  Minimally improved 111 -10.58 18.42 -0.61 -0.60 <0.0001
  No change 74 -1.19 15.84 -0.01 -0.01 0.3380
  Worse 14 -3.36 11.22 -0.11 -0.25 0.2896
Patient global impression of change
p(KW) < 0.0001
Very much improved 30 -26.73 23.07 -1.27 -1.24 <0.0001
  Much improved 123 -21.38 18.11 -1.19 -1.22 <0.0001
  Minimally improved 114 -10.25 18.66 -0.60 -0.56 <0.0001
  No change 67 -1.73 13.42 -0.06 -0.10 0.1838
  Worse 22 0.45 16.06 0.11 0.18 0.8336
  1. N: number of patients per group; STD: standard deviation; ES: effect-size; SRM: standard response mean; p(change = 0): Wilcoxon signed-rank test p-value; p(KW): Kruskal-Wallis p-value