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Table 5 Cronbach’s alpha and Loevinger’s Coefficients of the SPHERE-21 anxiety-depression and chronic fatigue scales

From: Validation and psychometric properties of the Somatic and Psychological HEalth REport (SPHERE) in a young Australian-based population sample using non-parametric item response theory

  

TW1

TW2

TM

TA

Anxiety-depression

alpha

0.88

0.87

0.87

0.86

# Hij < 0

0

0

0

0

Min(Hi)

0.29

0.24

0.28

0.24

Items Hi < 0.3

3

3, 28

28

3

Chronic fatigue

alpha

0.79

0.79

0.78

0.79

# Hij < 0

0

0

0

0

Min(Hi)

0.24

0.26

0.25

0.23

Items with Hi < 0.3

3, 15

3, 15, 31

3, 15

3, 15, 32

  1. Alpha corresponds to Cronbach’s alpha; #Hij < 0 to the number of pairwise Loevinger’s Coefficient below 0 for (i,j) items; Min(Hi) is the minimal Loevinger’s Coefficient between an item i and the scale; Items Hi < 0.3 lists the item number corresponding to Hi < 0.3
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BMC Psychiatry

ISSN: 1471-244X

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