title: Television viewing, computer use and total screen time in Canadian youth.
abstract: BACKGROUND
  Research has linked excessive television viewing and computer use in children and adolescents to a variety of health and social problems. Current recommendations are that screen time in children and adolescents should be limited to no more than 2 h per day.
  
  
  OBJECTIVE
  To determine the percentage of Canadian youth meeting the screen time guideline recommendations.
  
  
  METHODS
  The representative study sample consisted of 6942 Canadian youth in grades 6 to 10 who participated in the 2001/2002 World Health Organization Health Behaviour in School-Aged Children survey.
  
  
  RESULTS
  Only 41% of girls and 34% of boys in grades 6 to 10 watched 2 h or less of television per day. Once the time of leisure computer use was included and total daily screen time was examined, only 18% of girls and 14% of boys met the guidelines. The prevalence of those meeting the screen time guidelines was higher in girls than boys.
  
  
  CONCLUSIONS
  Fewer than 20% of Canadian youth in grades 6 to 10 met the total screen time guidelines, suggesting that increased public health interventions are needed to reduce the number of leisure time hours that Canadian youth spend watching television and using the computer.
authors.affiliation: School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario.
authors.forename: Amy E
authors.initials: AE
authors.lastname: Mark
authors.forename: William F
authors.initials: WF
authors.lastname: Boyce
authors.forename: Ian
authors.initials: I
authors.lastname: Janssen