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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