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Table 16 Coverage of the symptom questionnaires measuring distress, depression, anxiety and somatization by the 4DSQ scales; standardised Beta-coefficients and explained (shared) variance R2 (results from linear regression analysis)

From: The Four-Dimensional Symptom Questionnaire (4DSQ): a validation study of a multidimensional self-report questionnaire to assess distress, depression, anxiety and somatization

 

Cronbach's α

Standardised Beta-coefficients

R2

Coveragea

  

Distress

Depression

Anxiety

Somatization

  

Distress

       

- GHQ

0.87

0.53*

0.06

0.03

-0.05

0.34

0.39

- MQ

0.88

0.61***

0.13

0.08

0.08

0.60

0.68

Depression

       

- HADS-Dep

0.76

0.71***

0.02

-0.16

0.10

0.42

0.55

- SDS

0.75

0.42*

0.22

0.08

0.24*

0.54

0.72

- SCL-90-Dep

0.91

0.48***

0.32***

0.17***

-0.04

0.66

0.73

- BDI

0.86

0.25**

0.43***

0.20*

0.02

0.61

0.71

Anxiety

       

- STAI-State

0.93

0.39***

0.15*

0.16**

0.05

0.43

0.46

- HADS-Anx

0.66

0.30*

-0.01

0.55***

0.10

0.60

0.91

- SCL-90-Anx

0.85

0.15**

0.04

0.64***

0.15***

0.71

0.84

- SCL-90-Ago

0.87

-0.01

-0.10

0.82***

0.05

0.64

0.74

- BAI

0.92

0.14*

0.04

0.46***

0.35***

0.74

0.80

Somatization

       

- SCL-90-Som

0.82

0.14**

-0.07

0.14**

0.71***

0.72

0.88

  1. * p < 0.05, ** p < 0.01, *** p < 0.001 (1-tailed)
  2. a Coverage = R2 /Cronbach's α