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Table 2 Item- and scale statistics, reliability and results of the exploratory three-factorial factor analysis in the total sample (N = 884)

From: Norm values and psychometric properties of the brief symptom inventory-18 regarding individuals between the ages of 60 and 95

no item

M (SD)

corrected item-total correlation

ω without the item

exploratory factor analysis

Scale 1: Somatization (ω = .826)

∑2.36 ± 3.07

  

h 2

f1

f2

f3

1 Faintness or dizziness

0.31 ± 0.62

.59

.798

.57

 

.70

 

4 Pains in heart or chest

0.41 ± 0.70

.62

.794

.63

 

.77

 

7 Nausea or upset stomach

0.34 ± 0.66

.52

.811

.45

 

.52

 

10 Trouble getting your breath

0.39 ± 0.72

.64

.788

.63

 

.77

 

13 Numbness or tingling in parts of your body

0.34 ± 0.69

.50

.815

.42

 

.54

 

16 Feeling weak in parts of your body

0.57 ± 0.82

.66

.781

.61

 

.67

 

Scale 2: Depression (ω = .890)

∑2.04 ± 3.34

      

2 Feeling no interest in things

0.42 ± 0.73

.72

.868

.69

.73

  

5 Feeling lonely

0.55 ± 0.92

.68

.881

.70

.81

  

8 Feeling blue

0.34 ± 0.72

.78

.857

.72

.73

  

11 Feelings of worthlessness

0.27 ± 0.65

.74

.866

.68

.68

  

14 Feeling hopeless about the future

0.38 ± 0.79

.76

.862

.68

.72

  

17 Thoughts of ending your life

0.08 ± 0.34

.43

.887

.58

  

.74

Scale 3: Anxiety (ω = .857)

∑1.55 ± 2.72

      

3 Nervousness or shakiness inside

0.31 ± 0.62

.63

.838

.58

 

.54

 

6 Feeling tense or keyed up

0.45 ± 0.74

.58

.855

.50

.59

  

9 Suddenly scared for no reason

0.23 ± 0.57

.69

.828

.68

  

.72

12 Spells of terror or panic

0.13 ± 0.43

.71

.831

.68

  

.71

15 Feeling so restless you could not sit still

0.23 ± 0.61

.71

.820

.62

  

.67

18 Feeling fearful

0.21 ± 0.55

.64

.833

.66

  

.72

Global Severity Index (ω = .929)

∑5.96 ± 8.08

      
  1. Note:. Only factor loadings > .40 are reported