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Psychometric evaluation of clinician- and caregiver-reported clinical severity assessments for individuals with CDKL5 deficiency disorder

The CDKL5 Clinical Severity Assessment is a comprehensive, content-validated measurement tool capturing the diverse challenges of cyclin-dependent kinase-like 5 deficiency disorder, a genetically caused developmental epileptic encephalopathy. The CCSA is divided into clinician-reported and caregiver-reported assessments. The aim of this study was to evaluate the factor structure of these measures through confirmatory factor analysis and evaluate their validity and reliability.

Burden of illness in Rett syndrome: initial evaluation of a disorder-specific caregiver survey

Rett syndrome (RTT) is a severe X-linked neurodevelopmental disorder associated with multiple neurologic impairments. Previous studies have shown challenges to the quality of life of individuals with RTT and their caregivers. However, instruments applied to quantify disease burden have not adequately captured the impact of these impairments on affected individuals and their families. Consequently, an international collaboration of stakeholders aimed at evaluating Burden of Illness in RTT was organized.

Investigating the impact of developmental coordination difficulties across home, school, and community settings: Findings from the Australian Impact for DCD survey

To evaluate the participation difficulties experienced by children with developmental coordination disorder in home, school, and community environments.  

Psychometric Properties of the EQ-5D-Y-5L for Children With Intellectual Disability

The EQ-5D-Y-5L is a generic preference-based measure of health-related quality of life for children. This study aimed to describe the distributional properties, test-retest reliability, and convergent validity of the EQ-5D-Y-5L in children with intellectual disability (ID). 

The natural history of the MECP2 Duplication disorder: Australian surveillance and plans for development of an international register

Helen Jenny Leonard Downs MBChB MPH BApplSci (physio) MSc PhD Principal Research Fellow Head, Child Disability +61 419 956 946 08 6319 1763

The Sibling Project

The Sibling Project focuses on children, adolescents and emerging adults who have a sibling with a disability, investigating their mental health, relationships and quality of life.

2025 International Siblings Day

National Siblings Day is a holiday dedicated to celebrating the bond between siblings. It is a time to recognize the importance of siblings, whether they are brothers, sisters, step-siblings, or even those who feel like family.

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The list of The Siblings Project publications

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Camp 2024

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