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  • Helen Leonard
2016

Family satisfaction following spinal fusion in Rett syndrome

Downs, J., Torode, I., Ellaway, C., Jacoby, P., Bunting, C., Wong, K., Christodoulou, J. & Leonard, H., Jan 2016, In : Developmental Neurorehabilitation. 19, 1, p. 31-37 7 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
11 Citations (Scopus)
2018

Intellectual disability in children conceived using assisted reproductive technology

Hansen, M., Greenop, K. R., Bourke, J., Baynam, G., Hart, R. J. & Leonard, H., 1 Dec 2018, In : Pediatrics. 142, 6, e20181269.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2017

Expanding the clinical picture of the MECP2 Duplication syndrome

Lim, Z., Downs, J., Wong, K., Ellaway, C. & Leonard, H., 1 Apr 2017, In : Clinical Genetics. 91, 4, p. 557-563 7 p.

Research output: Contribution to journalArticle

20 Citations (Scopus)
2018

What effect does regular exercise have on oxidative stress in people with Down syndrome? A systematic review with meta-analyses

Shields, N., Downs, J., de Haan, J. B., Taylor, N. F., Torr, J., Fernhall, B., Kingsley, M., Mnatzaganian, G. & Leonard, H., 1 Jun 2018, In : Journal of Science and Medicine in Sport. 21, 6, p. 596-603 8 p.

Research output: Contribution to journalReview article

1 Citation (Scopus)
2020

Prevalence estimates of mental health problems in children and adolescents with intellectual disability: A systematic review and meta-analysis

Buckley, N., Glasson, E. J., Chen, W., Epstein, A., Leonard, H., Skoss, R., Jacoby, P., Blackmore, A. M., Srinivasjois, R., Bourke, J., Sanders, R. J. & Downs, J., 30 May 2020, In : Australian and New Zealand Journal of Psychiatry.

Research output: Contribution to journalReview article

The contributions of fetal growth restriction and gestational age to developmental outcomes at 12 months of age: A cohort study

Baumgartel, K., Jensen, L., White, S. W., Wong, K., Straker, L., Leonard, H., Finlay-Jones, A. & Downs, J., Mar 2020, In : Early Human Development. 142, 104951.

Research output: Contribution to journalArticle

2019

Requirements for improving health and well-being of children with Prader-Willi syndrome and their families

Mackay, J., McCallum, Z., Ambler, G. R., Vora, K., Nixon, G., Bergman, P., Shields, N., Milner, K., Kapur, N., Crock, P., Caudri, D., Curran, J., Verge, C., Seton, C., Tai, A., Tham, E., Musthaffa, Y., Lafferty, A. R., Blecher, G., Harper, J. & 6 others, Schofield, C., Nielsen, A., Wilson, A., Leonard, H., Choong, C. S. & Downs, J., 30 Jun 2019, In : Journal of Paediatrics and Child Health.

Research output: Contribution to journalReview article

Open Access
1 Citation (Scopus)
2016

Transition to adulthood for young people with intellectual disability: the experiences of their families

Leonard, H., Foley, K. R., Pikora, T., Bourke, J., Wong, K., McPherson, L., Lennox, N. & Downs, J., 1 Dec 2016, In : European Child and Adolescent Psychiatry. 25, 12, p. 1369-1381 13 p.

Research output: Contribution to journalArticle

21 Citations (Scopus)
2020

Survival of children and adolescents with intellectual disability following gastrostomy insertion

Wong, K., Glasson, E. J., Jacoby, P., Srasuebkul, P., Forbes, D., Ravikumara, M., Wilson, A., Bourke, J., Trollor, J., Leonard, H., Nagarajan, L. & Downs, J., 1 Jul 2020, In : Journal of Intellectual Disability Research. 64, 7, p. 497-511 15 p.

Research output: Contribution to journalArticle

2019

The Brain Basis of Comorbidity in Neurodevelopmental Disorders

Licari, M. K., Finlay-Jones, A., Reynolds, J. E., Alvares, G. A., Spittle, A. J., Downs, J., Whitehouse, A. J. O., Leonard, H., Evans, K. L. & Varcin, K., Mar 2019, In : Current Developmental Disorders Reports. 6, 1, p. 9-18 10 p.

Research output: Contribution to journalReview article

2017

Exploring quality of life of children with cerebral palsy and intellectual disability: What are the important domains of life?

Davis, E., Reddihough, D., Murphy, N., Epstein, A., Reid, S. M., Whitehouse, A., Williams, K., Leonard, H. & Downs, J., 1 Nov 2017, In : Child: Care, Health and Development. 43, 6, p. 854-860 7 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2019

Content validation of the Quality of Life Inventory—Disability

Epstein, A., Williams, K., Reddihough, D., Murphy, N., Leonard, H., Whitehouse, A., Jacoby, P. & Downs, J., 1 Jan 2019, In : Child: Care, Health and Development. 45, 5, p. 654-659 6 p.

Research output: Contribution to journalArticle

Cannabis for refractory epilepsy in children: A review focusing on CDKL5 Deficiency Disorder

Dale, T., Downs, J., Olson, H., Bergin, A. M., Smith, S. & Leonard, H., Mar 2019, In : Epilepsy Research. 151, p. 31-39 9 p.

Research output: Contribution to journalReview article

3 Citations (Scopus)

Association between Interpregnancy Interval and Adverse Birth Outcomes in Women with a Previous Stillbirth: An International Cohort Study

Regan, A. K., Gissler, M., Magnus, M. C., Haberg, S. E., Ball, S., Malacova, E., Nassar, N., Leonard, H. & Pereira, G., 1 Sep 2019, In : Obstetrical and Gynecological Survey. 74, 9, p. 507-508 2 p.

Research output: Contribution to journalComment/debate

2018

The prevalence of mental health disorders and symptoms in children and adolescents with cerebral palsy: a systematic review and meta-analysis

Downs, J., Blackmore, A. M., Epstein, A., Skoss, R., Langdon, K., Jacoby, P., Whitehouse, A. J. O., Leonard, H., Rowe, P. W., Glasson, E. J. & The Cerebral Palsy Mental Health Group, 1 Jan 2018, In : Developmental Medicine and Child Neurology. 60, 1, p. 30-38 9 p.

Research output: Contribution to journalReview article

22 Citations (Scopus)
2020

Risk of Hospitalizations Following Gastrostomy in Children with Intellectual Disability

Jacoby, P., Wong, K., Srasuebkul, P., Glasson, E. J., Forbes, D., Ravikumara, M., Wilson, A., Nagarajan, L., Bourke, J., Trollor, J., Leonard, H. & Downs, J., Feb 2020, In : Journal of Pediatrics. 217, p. 131-138.e10

Research output: Contribution to journalArticle

Open Access
3 Citations (Scopus)
2017

Caesarean section and risk of autism across gestational age: a multi-national cohort study of 5 million births

Yip, B. H. K., Leonard, H., Stock, S., Stoltenberg, C., Francis, R. W., Gissler, M., Gross, R., Schendel, D. & Sandin, S., Apr 2017, In : International Journal of Epidemiology. 46, 2, p. 429-439 11 p.

Research output: Contribution to journalArticle

19 Citations (Scopus)
2019

Association of Genetic and Environmental Factors with Autism in a 5-Country Cohort

Bai, D., Yip, B. H. K., Windham, G. C., Sourander, A., Francis, R., Yoffe, R., Glasson, E., Mahjani, B., Suominen, A., Leonard, H., Gissler, M., Buxbaum, J. D., Wong, K., Schendel, D., Kodesh, A., Breshnahan, M., Levine, S. Z., Parner, E. T., Hansen, S. N., Hultman, C. & 2 others, Reichenberg, A. & Sandin, S., 1 Jan 2019, In : JAMA Psychiatry. 76, 10, p. 1035-1043

Research output: Contribution to journalArticle

30 Citations (Scopus)
2017

Maltreatment risk among children with disabilities

Maclean, M. J., Sims, S., Bower, C., Leonard, H., Stanley, F. J. & O'Donnell, M., 1 Apr 2017, In : Pediatrics. 139, 4, e20161817.

Research output: Contribution to journalArticle

Open Access
File
32 Citations (Scopus)
322 Downloads (Pure)
2019

Association between interpregnancy interval and adverse birth outcomes in women with a previous stillbirth: an international cohort study

Regan, A. K., Gissler, M., Magnus, M. C., Håberg, S. E., Ball, S., Malacova, E., Nassar, N., Leonard, H. & Pereira, G., 13 Apr 2019, In : The Lancet. 393, 10180, p. 1527-1535 9 p.

Research output: Contribution to journalArticle

Open Access
File
8 Citations (Scopus)
450 Downloads (Pure)

Data Linkage: Canadian and Australian Perspectives on a Valuable Methodology for Intellectual and Developmental Disability Research

Balogh, R., Leonard, H., Bourke, J., Brameld, K., Downs, J., Hansen, M., Glasson, E., Lin, E., Lloyd, M., Lunsky, Y., O'Donnell, M., Shooshtari, S., Wong, K. & Krahn, G., 1 Oct 2019, In : Intellectual and developmental disabilities. 57, 5, p. 439-462 24 p.

Research output: Contribution to journalArticle

2018

Risk of stillbirth, preterm delivery, and fetal growth restriction following exposure in a previous birth: systematic review and meta-analysis

Malacova, E., Regan, A., Nassar, N., Raynes-Greenow, C., Leonard, H., Srinivasjois, R., W Shand, A., Lavin, T. & Pereira, G., 1 Jan 2018, In : BJOG: an International Journal of Obstetrics and Gynaecology. 125, 2, p. 183-192 10 p.

Research output: Contribution to journalArticle

25 Citations (Scopus)
2016

Young people with intellectual disability transitioning to adulthood: Do behaviour trajectories differ in those with and without down syndrome?

Foley, K. R., Taffe, J., Bourke, J., Einfeld, S. L., Tonge, B. J., Trollor, J. & Leonard, H., 8 Jul 2016, In : PLoS One. 11, 7, p. 1-14

Research output: Contribution to journalArticle

Open Access
9 Citations (Scopus)
2018

An investigation of the determinants of quality of life in adolescents and young adults with Down syndrome

Haddad, F., Bourke, J., Wong, K. & Leonard, H., 1 Jun 2018, In : PLoS One. 13, 6, 0197394.

Research output: Contribution to journalArticle

Open Access
3 Citations (Scopus)
2020

Expanding the phenotype of the CDKL5 deficiency disorder: Are seizures mandatory?

MacKay, C. I., Bick, D., Prokop, J. W., Muñoz, I., Rouse, J., Downs, J. & Leonard, H., 1 May 2020, In : American Journal of Medical Genetics, Part A. 182, 5, p. 1217-1222 6 p.

Research output: Contribution to journalArticle

2016

Validating the rett syndrome gross motor scale

Downs, J., Stahlhut, M., Wong, K., Syhler, B., Bisgaard, A. M., Jacoby, P. & Leonard, H., 22 Jan 2016, In : PLoS One. 11, 1, p. 1-11 e0147555.

Research output: Contribution to journalArticle

Open Access
File
23 Citations (Scopus)
202 Downloads (Pure)

Improved survival in Down Syndrome over the last 60 years and the impact of perinatal factors in recent decades

Glasson, E., Jacques, A., Wong, K., Bourke, J. & Leonard, H., Feb 2016, In : Journal of Pediatrics. 169, p. 214-220e1 8 p.

Research output: Contribution to journalArticle

Open Access
File
28 Citations (Scopus)
376 Downloads (Pure)
2017

A qualitative investigation of recovery after femoral fracture in Rett syndrome

Horne, T., Leonard, H., Stannage, K. & Downs, J., 1 Mar 2017, In : Child: Care, Health and Development. 43, 2, p. 232-239 8 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
358 Downloads (Pure)
2018

Choice making in Rett syndrome: a descriptive study using video data

Urbanowicz, A., Ciccone, N., Girdler, S., Leonard, H. & Downs, J., 27 Mar 2018, In : Disability and Rehabilitation. 40, 7, p. 813-819 7 p.

Research output: Contribution to journalArticle

Open Access
File
3 Citations (Scopus)
236 Downloads (Pure)
2016
2 Citations (Scopus)

Functional abilities in children and adults with the CDKL5 disorder

Fehr, S., Downs, J., Ho, G., de Klerk, N., Forbes, D., Christodoulou, J., Williams, S. & Leonard, H., Nov 2016, In : American Journal of Medical Genetics, Part A. 170, 11, p. 2860-2869

Research output: Contribution to journalArticle

17 Citations (Scopus)
2019
1 Citation (Scopus)
Open Access

Predicting Long-Term Survival Without Major Disability for Infants Born Preterm

Bourke, J., Wong, K., Srinivasjois, R., Pereira, G., Shepherd, C. C. J., White, S. W., Stanley, F. & Leonard, H., Dec 2019, In : The Journal of Pediatrics. 215, p. 90-97.e1

Research output: Contribution to journalArticle

2016

ViPAR: A software platform for the Virtual Pooling and Analysis of Research Data

Carter, K. W., Francis, R., Bresnahan, M., Gissler, M., Grønborg, T. K., Gross, R., Gunnes, N., Hammond, G., Hornig, M., Hultman, C. M., Huttunen, J., Langridge, A., Leonard, H., Newman, S., Parner, E. T., Petersson, G., Reichenberg, A., Sandin, S., Schendel, D. E., Schalkwyk, L. & 8 others, Sourander, A., Steadman, C., Stoltenberg, C., Suominen, A., Surén, P., Susser, E., Sylvester Vethanayagam, A. & Yusof, Z., 2016, In : International Journal of Epidemiology. 45, 2, p. 408-416 9 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)

Health care utilization and costs for children and adults with duchenne muscular dystrophy

Teoh, L., Geelhoed, E., Bayley, K., Leonard, H. & Laing, N., Jun 2016, In : Muscle and Nerve. 53, 6, p. 877-884

Research output: Contribution to journalArticle

5 Citations (Scopus)
2019

Birth seasonality and risk of autism spectrum disorder

Lee, B. K., Gross, R., Francis, R. W., Karlsson, H., Schendel, D. E., Sourander, A., Reichenberg, A., Parner, E. T., Hornig, M., Yaniv, A., Leonard, H. & Sandin, S., 15 Aug 2019, In : European Journal of Epidemiology. 34, 8, p. 785-792 8 p.

Research output: Contribution to journalArticle

Open Access
5 Citations (Scopus)
2018

Respiratory morbidity in Rett syndrome: an observational study

MacKay, J., Leonard, H., Wong, K., Wilson, A. & Downs, J., 1 Sep 2018, In : Developmental Medicine and Child Neurology. 60, 9, p. 951-957 7 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)
2017

Measurement of sedentary behaviors or "downtime" in Rett Syndrome

Stahlhut, M., Hill, K., Bisgaard, A. M., Jensen, A. K., Andersen, M., Leonard, H. & Downs, J., 1 Oct 2017, In : Journal of Child Neurology. 32, 12, p. 1009-1013 5 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)
2020

Stillbirth risk prediction using machine learning for a large cohort of births from Western Australia, 1980–2015

Malacova, E., Tippaya, S., Bailey, H. D., Chai, K., Farrant, B. M., Gebremedhin, A. T., Leonard, H., Marinovich, M. L., Nassar, N., Phatak, A., Raynes-Greenow, C., Regan, A. K., Shand, A. W., Shepherd, C. C. J., Srinivasjois, R., Tessema, G. A. & Pereira, G., 1 Dec 2020, In : Scientific Reports. 10, 1, 5354.

Research output: Contribution to journalArticle

Open Access
2019

Regan et al. Reply to "Sibling Comparison Design in Birth-Spacing Studies"

Regan, A. K., Ball, S. J., Warren, J. L., Malacova, E., Marston, C., Nassar, N., Leonard, H., de Klerk, N. & Pereira, G., Jan 2019, In : American Journal of Epidemiology. 188, 1, p. 22-23 2 p.

Research output: Contribution to journalEditorial

Open Access
2017

Patterns of sedentary time and ambulatory physical activity in a Danish population of girls and women with Rett syndrome

Stahlhut, M., Downs, J., Aadahl, M., Leonard, H., Bisgaard, A. M. & Nordmark, E., 2 Oct 2017, In : Disability and Rehabilitation. p. 1-9 9 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Feasibility of assessing diet with a mobile food record for adolescents and young adults with Down syndrome

Bathgate, K. E., Sherriff, J. L., Leonard, H., Dhaliwal, S. S., Delp, E. J., Boushey, C. J. & Kerr, D. A., 13 Mar 2017, In : Nutrients. 9, 3, 273.

Research output: Contribution to journalArticle

Open Access
5 Citations (Scopus)

Quantification of walking-based physical activity and sedentary time in individuals with Rett syndrome

Downs, J., Leonard, H., Wong, K., Newton, N. & Hill, K., 6 Jun 2017, In : Developmental Medicine and Child Neurology. 59, 6, p. 605-611

Research output: Contribution to journalArticle

15 Citations (Scopus)
2019

Epidemiology of gastrostomy insertion for children and adolescents with intellectual disability

Wong, K., Leonard, H., Pearson, G., Glasson, E. J., Forbes, D., Ravikumara, M., Jacoby, P., Bourke, J., Srasuebkul, P., Trollor, J., Wilson, A., Nagarajan, L. & Downs, J., Mar 2019, In : European Journal of Pediatrics. 178, 3, p. 351-361 11 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2018

Environmental enrichment intervention for Rett syndrome: An individually randomised stepped wedge trial

Downs, J., Rodger, J., Li, C., Tan, X., Hu, N., Wong, K., De Klerk, N. & Leonard, H., 10 Jan 2018, In : Orphanet Journal of Rare Diseases. 13, 1, 3.

Research output: Contribution to journalArticle

Open Access
14 Citations (Scopus)

Vagus nerve stimulation for the treatment of refractory epilepsy in the CDKL5 Deficiency Disorder

Lim, Z., Wong, K., Downs, J., Bebbington, K., Demarest, S. & Leonard, H., 1 Oct 2018, In : Epilepsy Research. 146, p. 36-40 5 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)
2019

The incidence, prevalence and clinical features of MECP2 duplication syndrome in Australian children

Giudice-Nairn, P., Downs, J., Wong, K., Wilson, D., Ta, D., Gattas, M., Amor, D., Thompson, E., Kirrali-Borri, C., Ellaway, C. & Leonard, H., 12 Feb 2019, In : Journal of Paediatrics and Child Health.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2020