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Table 5 Internal consistency reliability for Pediatric Quality of Life Inventory™ 3.0 Cardiac Module child self-report and parent proxy-report

From: Measuring health-related quality of life in Hungarian children with heart disease: psychometric properties of the Hungarian version of the Pediatric Quality of Life Inventory™ 4.0 Generic Core Scales and the Cardiac Module

Scale Total patient group Toddler
(2-4)
Young child (5-7) Child
(8-12)
Adolescent (13-18)
  Cronbach's α
Child Self-report      
   Total score 0.87   0.65 0.90 0.89
   Heart problems-symptoms 0.75   0.58 0.77 0.81
   Treatment II 0.64   0.50 0.56 0.73
   Appearance 0.65   0.58 0.65 0.67
   Treatment anxiety 0.89   0.92 0.87 0.89
   Cognitive problems 0.72   0.60 0.76 0.78
   Communication 0.76   0.75 0.74 0.83
Parent proxy-report      
   Total score 0.89 0.70 0.70 0.89 0.91
   Heart problems-symptoms 0.80 0.80 0.79 0.78 0.83
   Treatment II 0.82 0.84 0.85 0.71 0.86
   Appearance 0.73 0.54 0.49 0.73 0.72
   Treatment anxiety 0.89 0.92 0.84 0.88 0.91
   Cognitive problems 0.80 0.78 0.63 0.78 0.80
   Communication 0.86 0.96 0.78 0.80 0.87