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

From: Parent proxy-report of their children's health-related quality of life: an analysis of 13,878 parents' reliability and validity across age subgroups using 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
2 yrs 1,290 0.75 75.38 18.46 0.5 15.7 84.55 14.00 0.0 25.4 9.17* 0.66
3 yrs 1,242 0.77 75.28 18.07 0.0 14.8 83.48 14.52 0.1 22.2 8.20* 0.56
4 yrs 1,181 0.78 73.17 19.70 0.0 12.4 84.72 13.95 0.0 25.8 11.55* 0.83
5 yrs 976 0.79 71.17 20.59 0.8 10.5 79.76 15.88 0.1 17.9 8.59* 0.54
6 yrs 1,123 0.78 73.41 19.86 0.8 16.5 80.11 15.94 0.0 19.0 6.70* 0.42
7 yrs 1,082 0.81 69.74 21.77 0.4 13.3 79.64 16.85 0.1 21.1 9.90* 0.59
8 yrs 1,025 0.81 69.95 20.47 0.3 12.6 78.98 17.94 0.1 22.9 9.03* 0.50
9 yrs 968 0.81 69.10 20.35 0.7 9.4 78.88 17.98 0.3 19.8 9.78* 0.54
10 yrs 979 0.82 69.26 20.95 0.3 12.9 79.48 18.00 0.3 23.7 10.22* 0.57
11 yrs 784 0.83 67.42 21.88 0.7 8.2 80.46 18.02 0.0 24.8 13.04* 0.72
12 yrs 769 0.83 68.34 20.78 0.0 9.6 79.63 17.86 0.4 22.2 11.29* 0.63
13 yrs 702 0.84 68.43 21.39 0.7 10.7 80.32 18.39 0.0 24.1 11.89* 0.65
14 yrs 646 0.81 67.03 21.61 0.4 11.8 80.43 16.95 0.0 23.5 13.40* 0.79
15 yrs 620 0.85 69.31 21.96 0.8 10.0 79.14 18.86 0.3 26.8 9.83* 0.52
16 yrs 363 0.85 66.25 22.54 0.5 10.6 80.89 18.04 0.0 21.2 14.64* 0.81
  1. Note: Total N = 13,750 for reliability, Total N = 13,004 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 < .001 (independent samples t-test).