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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.

Hospitalizations Following Complex Hip Surgery in Children with Intellectual Disability: A Self-Controlled Case Series Analysis

To evaluate the associations between complex hip surgery and subsequent hospitalizations in children with intellectual disability, including a subset of children with cerebral palsy.

Validating the Communication and Symbolic Behavior Scales–Developmental Profile Infant–Toddler Checklist (CSBS–DP ITC) Beyond Infancy in the CDKL5 Deficiency Disorder

CDKL5 deficiency disorder (CDD) results in early-onset epilepsy and lifelong cognitive and motor impairments. With no validated measure for communication in CDD, this study evaluated the psychometric properties of the Communication and Symbolic Behavior Scales-Developmental Profile Infant Toddler Checklist.

Septo-optic dysplasia and gastroschisis: trends in birth prevalence and association with maternal age

This study aims to describe the risk factors and trends in birth prevalence of septo-optic dysplasia (SOD) and gastroschisis between 1980 and 2023. This descriptive, population-based study of SOD and gastroschisis used Western Australian Register of Developmental Anomalies data from 1980 to 2023. Birth prevalence was calculated using Midwives Notification System data for all births after 20 weeks gestation.

A process and impact evaluation of use of a Powered Wheelchair Standing Device by boys with Duchenne muscular dystrophy

Graham Jenny Peter Hall Downs Jacoby BAppSci PhD CRFS FANZSRS FThorSoc FERS BApplSci (physio) MSc PhD BA (Hons) MSc Honorary Research Associate Head,

Multi-site validation of a suite of clinical outcome measures for clinical trial readiness in the CDKL5 Deficiency Disorder

Helen Jenny Peter Leonard Downs Jacoby MBChB MPH BApplSci (physio) MSc PhD BA (Hons) MSc Principal Research Fellow Head, Child Disability

Content Validation of the Communication Inventory Disability–Observer Reported CID-OR

CDKL5 deficiency disorder is a rare and severe developmental and epileptic encephalopathy that has profound effects on communication. It is essential that communication be measured accurately for upcoming gene therapy trials. The Communication Inventory Disability-Observer Reported was developed from a framework of communication derived from parent/caregiver interview data in consultation with disability and communication experts, and after reviewing concepts in existing measures.

Outcomes following a behaviour change intervention within hospitals to improve birth registrations and hospital utilisation for Aboriginal and/or Torres Strait Islander infants

The primary objective was to determine whether a behaviour change intervention delivered to hospital staff would (1) improve the proportion of Aboriginal and/or Torres Strait Islander (Aboriginal) babies being registered and (2) reduce hospital admissions and emergency presentations for babies <6 months old. The secondary objective was an observational analysis to determine factors that might influence the proportion of registered Aboriginal births in Western Australia. 

Beyond Seizures as an Outcome Measure: A Global Severity Scoring System for CDKL5 Deficiency Disorder

CDKL5 deficiency disorder (CDD) is a rare developmental and epileptic encephalopathy (DEE) associated with multiple impairments and comorbidities. Outcome measures for disease-modifying clinical trials for DEEs should measurably capture a spectrum of caregiver priorities and be externally validated.

Psychometric validation of the quality of life Inventory − Disability (QI-Disability) among patients with Lennox-Gastaut syndrome and Dravet syndrome

To evaluate the psychometric properties of the Quality of Life Inventory -Disability (QI-Disability) for individuals with Dravet syndrome (DS) or Lennox-Gastaut syndrome (LGS), two rare developmental and epileptic encephalopathy conditions.