Scale Properties | Development Sample, 2009 (n = 2760) | Development Sample, 2009 (n = 2760) | Validation Sample, 2010 (n = 1765) | Validation Sample, 2010 (n = 1765) |
---|---|---|---|---|
 | HC-PEDS ADL Limitations Scale | HC-PEDS Hands-on Needs Scale | HC-PEDS ADL Limitations Scale | HC-PEDS Hands-on Needs Scale |
Distribution | Â | Â | Â | Â |
Mean | 24.9 | 5.3 | 23.0 | 4.9 |
St. Deviation | 15.3 | 3.3 | 14.3 | 3.1 |
Skewness | 0.4 | 0.1 | 0.6 | 0.2 |
Kurtosis | -1.1 | -1.1 | -0.8 | -0.9 |
Median | 21 | 5 | 19 | 4 |
Inter-quartile range | 13-40 | 3-9 | 12-33 | 3-8 |
Range | 0-50 | 0-10 | 0-50 | 0-10 |
Internal Consistency (unstandardized Cronbach's alpha) | Â | Â | Â | Â |
Full sample | 0.93 | 0.90 | 0.93 | 0.89 |
Ages 4-8 | 0.92 | 0.88 | 0.91 | 0.86 |
Ages 9-12 | 0.93 | 0.90 | 0.93 | 0.89 |
Ages 13-16 | 0.94 | 0.91 | 0.93 | 0.90 |
Ages 17-20 | 0.93 | 0.90 | 0.94 | 0.88 |
Male | 0.93 | 0.90 | 0.93 | 0.89 |
Female | 0.93 | 0.90 | 0.92 | 0.89 |
Medical conditions only | 0.93 | 0.89 | 0.92 | 0.88 |
Psychiatric, development or behavioral conditions only | 0.79 | 0.76 | 0.77 | 0.73 |
Both medical and psychiatric, development or behavioral conditions. | 0.93 | 0.90 | 0.93 | 0.89 |
Discriminant Validity (Pearson's r) | Â | Â | Â | Â |
Age | -0.016 (p = 0.39) | -0.012 (p = 0.50) | -0.0174 (p = 0.46) | -0.025 (p = 0.28) |
Concurrent Validity (Pearson's r) | Â | Â | Â | Â |
Additive IADL scale (2009 sample α = 0.88; 2010 sample α = 0.87) | 0.329 | 0.304 | 0.320 | 0.292 |
2-Person Assistance w/an ADL | 0.464 | 0.444 | 0.538 | 0.504 |
Cognitive Scale (2009 sample α = 0.82; 2010 sample α = 0.82) | 0.355 | 0.309 | 0.368 | 0.315 |
Predictive Validity (Pearson's r) | Â | Â | Â | Â |
PCS hours authorized | 0.455 | 0.435 | 0.436 | 0.424 |
Construct Validity (R 2 ) | Â | Â | Â | Â |
OLS Model | 0.65 | 0.59 | 0.71 | 0.64 |