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Table 3 Internal consistency, test-retest reliability and standardised factor loadings for the QLQ-TC26

From: International phase IV validation study of an EORTC quality of life questionnaire for testicular cancer patients: the EORTC QLQ-TC26

Scale Cronbach’s
Alpha
Test-retest
ICC
Item # Standardised
Factor Loading
Treatment Side-effects 0.80 0.91 Item 1 0.752
    Item 2 0.776
    Item 3 0.769
    Item 4 0.721
    Item 5 0.752
    Item 6 0.621
    Item 7 0.711
    Item 8 0.624
Treatment Satisfaction 0.87 0.48 Item 9 0.977
    Item 10 0.912
Future Perspective 0.79 0.71 Item 11 0.889
    Item 12 0.852
Job and Education Problems   0.81 Item 13 0.810
Physical Limitation   0.67 Item 14 0.670
Family Problems   0.65 Item 15 0.650
Infertility   0.82 Item 16 0.820
Communication 0.67 0.80 Item 17 0.708
    Item 21 0.944
Body Image Problems   0.75 Item 18 0.750
Sexual Activity 0.81 0.84 Item 19 0.905
    Item 20 0.825
Sexual Functioning 0.62 0.89 Item 22 0.780
    Item 23 0.765
Sexual Enjoyment 0.90 0.73 Item 24 0.955
    Item 25 0.954
Testicular Implant Satisfactiona   0.69 Item 26  
  1. aThis conditional scale has been excluded from the confirmatory factor analysis
  2. RMSEA = 0.046; CFI = 0.974; TLI = 0.963