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Table 4 PedsQL™ 4.0 Generic Core Scales Emotional Functioning Scale Score: Child Self-Report Reliability and Validity

From: How young can children reliably and validly self-report their health-related quality of life?: An analysis of 8,591 children across age subgroups with the PedsQL™ 4.0 Generic Core Scales

Age Reliability Validity
    Chronic Health Condition Healthy Sample   
  n α Mean SD % Floor % Ceiling Mean SD % Floor % Ceiling Chronic vs. Healthy Difference Chronic vs. Healthy Effect Size
5 yrs 750 0.70 72.83 23.36 0.0 20.6 79.11 17.88 0.2 24.4 6.28** 0.35
6 yrs 926 0.70 75.45 21.73 0.0 24.1 78.73 18.46 0.1 24.7 3.29* 0.18
7 yrs 886 0.73 69.44 22.10 1.1 13.4 77.38 19.07 0.0 24.6 7.95** 0.42
8 yrs 874 0.75 70.96 19.37 0.0 10.3 77.53 18.97 0.2 20.8 6.57** 0.35
9 yrs 840 0.77 72.01 21.17 0.0 14.1 78.17 18.28 0.2 19.7 6.16** 0.34
10 yrs 840 0.77 73.93 19.94 0.0 14.8 79.88 17.72 0.0 22.0 5.96** 0.34
11 yrs 680 0.79 74.60 20.41 0.4 15.3 81.04 17.51 0.0 25.2 6.44** 0.37
12 yrs 678 0.79 73.68 19.72 0.0 12.8 79.22 18.24 0.2 21.7 5.54** 0.30
13 yrs 615 0.81 72.55 21.22 0.0 13.5 80.13 18.15 0.0 23.9 7.57** 0.42
14 yrs 572 0.79 72.92 20.22 0.4 14.6 81.02 17.78 0.3 23.6 8.10** 0.46
15 yrs 562 0.81 70.90 21.20 0.9 13.5 79.72 18.57 0.0 27.3 8.82** 0.47
16 yrs 332 0.81 70.74 21.97 0.6 14.0 80.15 17.99 0.0 20.9 9.41** 0.52
  1. Note: Total N = 8,555 for reliability, Total N = 8,319 for validity.
  2. Higher values equal better health-related quality of life.
  3. % Floor/Ceiling = the percentage of scores at the extremes of the scaling range.
  4. Effect sizes are designated as small (.20), medium (.50), and large (.80).
  5. *p < .05, **p < .001 (independent samples t-test).