Skip to main content

Table 3 Evaluation of psychometric properties of the SOC total scale and its three sub-dimensions (N = 142)

From: Rasch analysis of the sense of coherence scale in a sample of people with morbid obesity – a cross-sectional study

  

SOC Total scale

SOC Sub-dimensions

Step

 

Original (13 items)

Reduced (12 items)

Meaningfulness (4 items)

Comprehensibility (5 items)

Manageability (4 items)

2

Item misfit

#1

None

None

None

None

3

Variance explained

     
 

 1st dimension %

39.0%

39.1%

58.4%

43.4%

52.3%

 

 2nd dimension %

10.0%

10.5%

15.8%

18.3%

20.0%

4

Person misfit, n (%)

10 (7.0)

11 (7.7)

8 (5.6)

9 (6.3)

7 (4.9)

 

 Maximum score, n (%)

None

None

None

None

None

 

 Minimum score, n (%)

None

None

None

None

None

5

Person-separation index (without extremes)

2.05

2.01

1.71

1.30

1.46

6

Cronbach’s alpha

0.81

0.80

0.74

0.63

0.74