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Table 3 Reliability of the German CFQ-R, Child and Parent versions

From: Health-related quality of life in children with cystic fibrosis: validation of the German CFQ-R

  CFQ-R Child version CFQ-R Parent version
Dimensions of Health-Related Quality of Life No. of items Internal consistency
(Cronbach's α)
(n = 136)
Test-retest reliability
(ICC)
(n = 20)
95% Confidence Intervall for ICC No. of items Internal consistency (Cronbach's α)
(n = 136)
Test-retest reliability (ICC)
(n = 20)
95% Confidence Intervall for ICC
Physical Functioning 6 0.77 0.80 0.57-0.92 9 0.89 0.87 0.71-0.95
Energy - - -   5 0.69 0.90 0.76-0.96
Emotional State 8 0.69 0.74 0.47-0.89 5 0.66 0.86 0.69-0.94
Social Limitations 7 0.23 0.65 0.31-0.85 - - -  
School Performance - - -   3 0.73 0.61 0.23-0.83
Body Image 3 0.57 0.83 0.63-0.93 3 0.82 0.94 0.85-0.98
Eating Disturbance 3 0.69 0.70 0.39-0.87 2 0.86 0.91 0.79-0.96
Treatment Burden 3 0.24 0.61 0.24-0.83 3 0.72 0.89 0.74-0.95
Subjective Health Perception - - -   3 0.71 0.83 0.62-0.93
Respiratory Symptoms 4 0.64 0.83 0.63-0.93 6 0.83 0.89 0.75-0.96
Digestive Symptoms 1 - 0.50 0.09-0.76 3 0.69 0.83 0.63-0.93
Weight Problems - - -   1 - 0.68 0.35-0.86