Ontario Child Health Study: prevalence of attention deficit disorder with hyperactivity

P Szatmari; D R Offord; M H Boyle

doi:10.1111/j.1469-7610.1989.tb00236.x

Ontario Child Health Study: prevalence of attention deficit disorder with hyperactivity

J Child Psychol Psychiatry. 1989 Mar;30(2):219-30. doi: 10.1111/j.1469-7610.1989.tb00236.x.

Authors

P Szatmari¹, D R Offord, M H Boyle

Affiliation

¹ Department of Psychiatry, McMaster University, Chedoke Child and Family Center, Chedoke-McMaster Hospitals, Hamilton, Ontario, Canada.

PMID: 2708462
DOI: 10.1111/j.1469-7610.1989.tb00236.x

Abstract

The objective of this paper is to present data from the Ontario Child Health Study on the prevalence of attention deficit disorder with hyperactivity (ADDH). The overall prevalence of ADDH was 9.0% in boys and 3.3% in girls. There were no significant differences in the prevalence of ADDH by age or urban-rural status, but the disorder was significantly more common in boys than in girls. The prevalence of various subtypes of ADDH was also explored: attention deficit with and without hyperactivity, situational vs pervasive ADDH, and ADDH with and without other disorders. The clinical implications of these findings are discussed.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adolescent
Age Factors
Attention Deficit Disorder with Hyperactivity / epidemiology*
Child
Child, Preschool
Female
Humans
Male
Ontario
Rural Health
Sex Factors
Urban Health