title: Epidemiological investigation of school-related injuries in Koprivnica County, Croatia.
abstract: OBJECTIVE
  To assess the prevalence of injuries in elementary schools and determine specific risk groups of school-age children.
  
  
  METHODS
  According to the 1991 census, there were 6,398 children between 7 and 14 years of age in the study area of the former Koprivnica district. During the 1992-1997 period, 354 children were injured in school. The registration of injured children was performed via structured questionnaires filled out at the emergency clinic and outpatient surgical clinic of the General Hospital in Koprivnica. The mechanism of accident and activities preceding it were categorized according to the Nordic Medico-Statistical Committee classification. Chi-square test was used to determine groups of school children at specific risk and a classification tree was made on the basis of minimum entropy values for age, sex, activity, and mechanism of injury.
  
  
  RESULTS
  The highest injury rate of was recorded in 12-year-olds (21.7%). Upper extremities were most common site of injury (52.8%), whereas the most common type of injury was contusion (45.2%). The rate of head injuries was 3.2 times higher in younger (aged 7-10) children, whereas the rate of sports injuries was 3.5-fold higher in older (aged 11-14) children (p=0.001). Entropy classification revealed younger school-age children to be at the highest risk of contusion due to a blow from a ball, an object, or contact during sports activities.
  
  
  CONCLUSIONS
  In Koprivnica County, most school-related injuries occurred during sport activities (42%) and play during recess (55%), with specific differences in age and sex.
authors.affiliation: Department of Epidemiology, Statistics, and Informatics, Andrija Stampar School of Public Health, Zagreb University School of Medicine, Rockeffellerova 4, 10000 Zagreb, Croatia. avorko@andrija.snz.hr
authors.forename: A
authors.initials: A
authors.lastname: Vorko-Jović
authors.forename: M
authors.initials: M
authors.lastname: Rimac
authors.forename: F
authors.initials: F
authors.lastname: Jović
authors.forename: M
authors.initials: M
authors.lastname: Strnad
authors.forename: D
authors.initials: D
authors.lastname: Solaja
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D016009:Chi-Square Distribution; D002648:Child; D002675:Child, Preschool; D017523:Croatia / Q000453:epidemiology; D005260:Female; D006801:Humans; D015601:Injury Severity Score; D008297:Male; D011159:Population Surveillance; D015995:Prevalence; D011336:Probability; D018570:Risk Assessment; D012307:Risk Factors; D012424:Rural Population; D012572:School Health Services / Q000706:statistics & numerical data*; D012574:Schools / Q000706:statistics & numerical data*; D017678:Sex Distribution; D014947:Wounds and Injuries / Q000175:diagnosis / Q000453:epidemiology*