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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