title: Prevalence of motor problems in children with attention deficit hyperactivity disorder in Hong Kong.
abstract: BACKGROUND
  Local data on the occurrence of motor problems in children with attention deficit hyperactivity disorder are not available but an understanding of this important issue may enable better planning of medical services. We aimed to determine the prevalence of motor problems in children with attention deficit hyperactivity disorder in a local population.
  
  
  METHODS
  In this descriptive cross-sectional study, children aged 6 to 9 years diagnosed with attention deficit hyperactivity disorder over a period of 6 months from 1 July to 31 December 2011 were recruited from the Joint Paediatric and Child Psychiatric ADHD Program in New Territories East Cluster in Hong Kong. Movement Assessment Battery for Children and Developmental Coordination Disorder Questionnaire-Chinese version were used to determine the presence of motor problems.
  
  
  RESULTS
  Data from 95 participants were included in the final analysis. The number of children who had no, borderline, or definite motor problems was 63, 15, and 17, respectively. It is estimated that up to one third of local children with attention deficit hyperactivity disorder might have developmental coordination disorder.
  
  
  CONCLUSIONS
  Motor problems are common in local children with attention deficit hyperactivity disorder and figures are comparable with those from other parts of the world. Despite the various limitations of this study, the magnitude of the problem should not be overlooked.
authors.affiliation: Department of Paediatrics and Adolescent Medicine, Alice Ho Miu Ling Nethersole Hospital, Tai Po, Hong Kong.
authors.forename: K W
authors.initials: KW
authors.lastname: Tsui
authors.affiliation: Department of Psychiatry, The Chinese University of Hong Kong, Shatin, Hong Kong.
authors.forename: Kelly Y C
authors.initials: KY
authors.lastname: Lai
authors.affiliation: Department of Psychiatry, Alice Ho Miu Ling Nethersole Hospital, Tai Po, Hong Kong.
authors.forename: Marshall M C
authors.initials: MM
authors.lastname: Lee
authors.affiliation: Department of Psychiatry, Alice Ho Miu Ling Nethersole Hospital, Tai Po, Hong Kong.
authors.forename: Caroline K S
authors.initials: CK
authors.lastname: Shea
authors.affiliation: Department of Paediatrics and Adolescent Medicine, Alice Ho Miu Ling Nethersole Hospital, Tai Po, Hong Kong.
authors.forename: Luke C T
authors.initials: LC
authors.lastname: Tong
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications* / Q000503:physiopathology; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006723:Hong Kong; D006801:Humans; D008297:Male; D019957:Motor Skills Disorders / Q000453:epidemiology*; D015995:Prevalence; D011795:Surveys and Questionnaires
keywords: Attention deficit disorder with hyperactivity; Child; Motor skills disorders