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Hospitalisation for oral health-related conditions in children with intellectual disability in Western Australia: a population-based cohort study

Helen Leonard MBChB MPH Principal Research Fellow +61 419 956 946 helen.leonard@thekids.org.au Principal Research Fellow Areas of research expertise

International CDKL5 Disorder Database

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

International Rett syndrome study: InterRett

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

Mothers with intellectual disability and their children in Western Australia

Helen Leonard MBChB MPH Principal Research Fellow +61 419 956 946 helen.leonard@thekids.org.au Principal Research Fellow Areas of research expertise

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

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.

Gestational age as a predictor for subsequent preterm birth in New South Wales, Australia

There is no validated evidence base on predictive ability and absolute risk of preterm birth by gestational age of the previous pregnancy. We conducted a retrospective cohort study of mothers who gave birth to their first two children in New South Wales, 1994-2016. For each week of final gestational age of the first birth, we calculated relative and absolute risks of subsequent preterm birth.

Determinants of quality of life in Rett syndrome: New findings on associations with genotype

Rett syndrome is a genetically caused neurodevelopmental disorder associated with functional deficits and comorbidities. This study investigated relationships between genotype, functional abilities and comorbidities and quality of life in Rett syndrome.

Description of Total Population Hospital Admissions for Treacher Collins Syndrome in Australia

To describe patterns and demographic characteristics of total-population hospital admissions with a diagnosis of Treacher Collins syndrome (TCS) in Australia.

Optimal interpregnancy interval in autism spectrum disorder: A multi-national study of a modifiable risk factor

It is biologically plausible that risk of autism spectrum disorder (ASD) is elevated by both short and long interpregnancy intervals (IPI). We conducted a retrospective cohort study of singleton, non-nulliparous live births.