title: [Prevalence of migraine in a sample population of school children].
abstract: BACKGROUND
  The object of this study was to determine the prevalence of migraine in school children in our area, since few such studies have been done.
  
  
  METHODS
  The study was carried out by means of a questionnaire given to school children aged between 6 and 14. We selected a representative sample of the population, the size of which was determined by accepting as a reference value the 4% mentioned by Bille. The questionnaire was drawn up after a search of the literature for similar questionnaires and a preliminary trial on children known to suffer from migraine (giving a specificity of 96.6% and a sensitivity of 96.5%).
  
  
  RESULTS
  Using the criteria of Vahlquist there was a prevailence of 7.0% and with IHS of 6.7%. There was a predominance (not significant) of females (54.4%). In 89.1% there was a positive family history (parents and/or siblings) of migraine.
authors.affiliation: Unidad de Neuropediatría, Hospital Universitario, Valladolid, España.
authors.forename: R
authors.initials: R
authors.lastname: Palencia
authors.forename: M I
authors.initials: MI
authors.lastname: Sinovas
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008881:Migraine Disorders / Q000175:diagnosis / Q000453:epidemiology*; D015995:Prevalence; D017678:Sex Distribution; D013030:Spain / Q000453:epidemiology; D011795:Surveys and Questionnaires
vernacular_title: Prevalencia de migraña en una muestra de población escolar.