Functioning of young patients with cerebral palsy: Rasch analysis of the pediatric evaluation of disability inventory computer adaptive test daily activity and mobility

Reliability and Acceptability to Caregivers of Telehealth Administration of the Pediatric Evaluation of Disability Inventory - Computer Adaptive Test (PEDI-CAT) for Brazilian Youth with Down Syndrome

Purpose

To estimate test-retest reliability of the two versions of the PEDI-CAT administered via telehealth to caregivers of Brazilian young people with DS, to compare scores on the two versions, and to determine caregiver acceptance of telehealth administration of the assessment.

Method

A methodological study approved by the research ethics committee. Data collection was performed online, with a mean duration of 45.0 minutes for the content-balanced version of the PEDI-CAT and 17.5 minutes for the speedy version.

Results

In total, 28 caregivers of individuals with DS up to age 21 years participated (mean = 5.9 years; SD = 4.9 years). Intra-class correlation coefficients for the four domains of the PEDI-CAT content-balanced version and four domains of the PEDI-CAT speedy version ranged from 0.77 to 0.97. There was a statistical difference between the versions in the scores of the social-cognitive domain (p < 0.05). A mean of 105 items (SD = 21) was administered in the content-balanced version and a mean of 51 items (SD = 8) in the speedy version. All the caregivers found the method of administration of the PEDI-CAT acceptable.

Conclusions

This study demonstrated that either version of the Brazilian version of the PEDI-CAT can be used by telehealth in clinical practice to assess children, adolescents, and young adults with DS.

The Psychometric Properties of the Trunk Impairment Scale in Children with Cerebral Palsy

The Trunk Impairment Scale (TIS) measures static and dynamic seated trunk control in children with cerebral palsy (CP) who have postural control problems. Studies have investigated the reliability and validity of the TIS. However, the fitness and difficulty of the scale items have not been investigated. This study used Rasch analysis to test the construct validity of TIS for children with CP. TIS data were collected from 60 children with CP and analyzed for person and item fit, item difficulty, rating scale suitability, and separation reliability. Principal component analyses of residuals revealed that TIS had unidimensionality. Five misfit items (static sitting balance (SSB) items 2 and 3, dynamic sitting balance (DSB) items 4 and 5, and coordination (COO) item 3) were identified. DSB8 is the most difficult item, followed by DSB3 and COO4. On the other hand, the SSB3 item was found to be a relatively easy item. The rating scales demonstrated that out of the three subscales, SSB, DSB, and COO, only the SSB subscale did not meet the appropriate criteria. We demonstrated that statistical item analysis with the Rasch model could provide valuable information related to psychometric properties.