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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

Psychometric properties of QI-Disability in CDKL5 Deficiency Disorder: Establishing readiness for clinical trials

CDKL5 Deficiency Disorder (CDD) is a rare genetic disorder with symptoms of epilepsy, developmental impairments, and other comorbidities. Currently, there are no outcome measures for CDD with comprehensive evidence of validation. This study aimed to evaluate the psychometric properties of the Quality of Life Inventory-Disability (QI-Disability) in CDD. Quality of Life Inventory-Disability was administered to 152 parent caregivers registered with the International CDKL5 Disorder Database (ICDD).

Devising a Missing Data Rule for a Quality of Life Questionnaire - A Simulation Study

The aim of this study was to devise an evidence-based missing data rule for the Quality of Life Inventory-Disability (QI-Disability) questionnaire specifying how many missing items are permissible for domain and total scores to be calculated using simple imputation.

Validating the rett syndrome gross motor scale

The Rett Syndrome Gross Motor Scale could be an appropriate measure of gross motor skills in clinical practice and clinical trials

Rett syndrome: Establishing a novel outcome measure for walking activity in an era of clinical trials for rare disorders

Rett syndrome is a pervasive neurological disorder with impaired gait as one criterion.

Relationship between family quality of life and day occupations of young people with Down syndrome

This study aimed to explore relationships between family quality of life, day occupations and activities of daily living of young persons with Down syndrome.

Associations Between Hyperphagia, Symptoms of Sleep Breathing Disorder, Behaviour Difficulties and Caregiver Well-Being in Prader-Willi Syndrome: A Preliminary Study

Prader-Willi syndrome (PWS) is a rare genetic disorder characterised by neurodevelopmental delays, hyperphagia, difficulties with social communication and challenging behaviours. Individuals require intensive supervision from caregivers which may negatively affect caregiver quality of life. This study used data collected in the Australasian PWS Registry to evaluate associations between child behaviours and caregiver mental well-being.

Determinants of sleep problems in children with intellectual disability

Children with intellectual disabilities are more likely to experience sleep disorders of insomnia, excessive daytime sleepiness and sleep breathing disorders than typically developing children. The present study examined risk factors for these sleep disorders in 447 children (aged 5-18 years), diagnosed with an intellectual disability and comorbid autism spectrum disorder, cerebral palsy, Down syndrome or Rett syndrome. Primary caregivers reported on their child's sleep using the Sleep Disturbance Scale for Children (SDSC), as well as medical comorbidities and functional abilities.

Valproate and risk of fracture in Rett syndrome

This study investigated the relationships between fracture risk and commonly used AEDs in Rett syndrome.

Gross Motor Profile in Rett Syndrome as Determined by Video Analysis

This study used video supplemented by parent report data to describe the gross motor profile in females with Rett syndrome (n=99) and to investigate...