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Children in the Normative Sample (n=2,205) (Haley Coster, Dumas, Fragala-Pinkham, Moed, 2011)

Normative data for the PEDI-CAT were collected using a sample of 2,205 parents from civilian households in the contiguous United States with children under 21 years of age.  Quota sampling based on age was used to ensure that sufficient cases were collected within each of the PEDI age-based strata (100 cases in each of the 21 PEDI age strata).  Within each age group, equal proportions of gender were represented and efforts were made to assure that subjects were representative of the racial and ethnic distribution of the US according to the Year 2000 Census Bureau data.  T-scores were derived from the normative sample data by first converting the scores for each age group into z-scores and then transforming z-scores onto a T-scale with a mean of 50 and a standard deviation of 10. On this T-scale, approximately 95% of the population is expected to score between ¡À 2 SD, or between 30 and 70.

Children with Disabilities (n=617) (Haley, Coster, Dumas, Fragala-Pinkham, Moed, 2012)

• Excellent for Daily Activities and Mobility (.81)
• Adequate for Daily Activities, Social/cognitive and Responsibility (range =.72 -.78)
• Poor for Mobility and Social/Cognitive (.69) and Mobility and Responsibility (.60)

Children Receiving Early Intervention (n=37) (Khetani, McManus, Arestad,, et al., 2018)

• Adequate: r = 0.35 across PEDI-CAT domain scores

Children and Youth with Neurodevelopmental Disabilities (4 to 20 years of age) (Dumas and Fragala-Pinkham, 2012)

• Poor to Excellent: Item-specific reliability between the PEDI-CAT Mobility domain and PEDI FS Mobility Scale - Intraclass correlation coefficients ranged from .3390 to 1.000 and agreement results ranged from 60% to 100% for the 8 items that had at least 20 responses on the PEDI-CAT Mobility.

Young Children (<18 months of age) (Dumas, Fragala-Pinkham, Rosen, Lombard, Farrell, 2015)

• Adequate Validity: A statistically significant, fair association (r =0.313; p =.02) was found between the PEDI-CAT and Alberta Infant Motor Scales. 
• There was no significant difference in motor delay identification between tests; however, the AIMS had a higher percentage of infants with scores ¡Ü 5th percentile.

Children and Youth with Neurodevelopmental Disabilities (4 to 20 years of age)  (Dumas and Fragala-Pinkham, 2012)

• Excellent: Strength of association between the PEDI-CAT Mobility domain scaled scores and the PEDI FS Mobility scaled scores (r = .82; p < .001).

Children Born to Mothers with Preeclampsia (n=111) (Nicolas, Benitez, Riano, et. al., 2016)

• Lower Social/Cognitive age percentiles were associated with both lower maternal IgG levels and presence of necrotizing enterocolitis during the neonatal period.

Children Admitted and Discharged from PICU (1 to 17 years of age) (n=182) (Choong, Fraser, Al Harbi , et. al., 2018)

• Higher baseline function prior to PICU admission  associated with a slower functional recovery across all domains at 6 months

Children Receiving Early Intervention (n=37) (Khetani, McManus, Arestad, Richardson, Charlifue-Smith, et al., 2018)

Adequate: r = 0.33 between PEDI-CAT and YC-PEM median summary scores

Children who use walking aids vs wheelchairs (Dumas, Fragala-Pinkham, Feng, Haley, 2012)

• Mean scaled scores were significantly different (p < 0.001) for the two groups.  Mean score for the Wheelchair Group (38.37, SD=7.09) was lower than the Walking Aid Group (46.97, SD=5.10). The Walking Aid Group score range started and ended higher on the 20 to 80 scale than the Wheelchair Group.

Children with and without Disabilities (Dumas, Fragala-Pinkham, Haley, et. al., 2012)

• Mean scaled scores were significantly different (p < 0.001) for the two groups across all 4 domains with the children in the disability group having a lower mean score.

Children with Cerebral Palsy (mean age=11 years, 11 months) (Shore, Allar, Miller, Matheney, 2017)

• Excellent: Mobility domain distinguished between ambulatory and nonambulatory participants [area under the curve (AUC) = 0.98 and 0.97)
• Excellent: Daily Activities domain distinguished between independent and dependent hand function (AUC = 0.93).
• Excellent: All PEDI-CAT domains were able to discriminate between ambulatory (GMFCS levels I-III) or nonambulatory (GMFCS levels IV-V) as well as manually independent (MACS levels I-II) or manually dependent functional levels (MACS levels III-V) (p < .001).

Children with Autism Spectrum Disorders (ASD) and Intellectual Developmental Disabilities (IDD)  (Kao, Kramer, Liljenquist, Feng, Coster, 2012)

• Scores on the PEDI-CAT differentiated children with ASD (n=108) from a group without disabilities (n=2,205).
• Children with ASD (n=108) and IDD (n=150) did not demonstrate different performance profiles.

Children and Young Adults with Spinal Muscular Atrophy (n=58) (Pasternak, Sideridis, Fragala-Pinkham, Glanzman, Montes, 2016)

• Unidimensional content for each domain was confirmed and most informative for type III SMA; Item and person abilities were not distributed evenly across all types

Children with Medical Complexity (Dumas, Fragala-Pinkham, Rosen, O¡¯Brien, 2017)

• Divergent Validity: Significant differences were found between mean PEDI-CAT Daily Activities (12.62, p<0.001), Mobility (9.99, p<0.003), and Social/Cognitive (10.21, p<0.002) normative scores across the two complexity groups with children in the ¡°Less Complex¡± group having higher PEDI-CAT normative scores for all three domains, indicating higher levels of function.
• Convergent Validity: PEDI-CAT domains measure similar but distinct constructs of functional behavior for children with medical complexity of various ages.

Children with HIV Encepholapthy (Mann, Donald, Laughton , Lamberts , Langerak, 2017)