title: A validation study of an Italian version of the "ID Migraine".
abstract: BACKGROUND
  Migraine is a highly prevalent and disabling disease which is substantially underdiagnosed in primary care. Recently, the ID Migraine, a self-administered questionnaire, consisting of only 3 items, was shown to be a valid and reliable screening instrument for migraine in primary care in the United States.
  
  
  OBJECTIVE
  The aim of the present study was to validate an Italian version of the "ID Migraine" questionnaire.
  
  
  METHODS
  Two hundred and twenty-two consecutive headache patients referring to 8 headache centers in Sicily (Italy) completed an Italian version of the ID Migraine. The responses to the questionnaire were compared with the diagnosis of headache made by a headache specialist blind to the result of the questionnaire. Sensitivity, specificity, positive and negative predictive values for migraine were calculated.
  
  
  RESULTS
  The statistical analysis of 222 patients examined showed a very good performance of the ID Migraine with high sensitivity: 0.95 (95% CI, 0.91 to 0.98), specificity: 0.72 (95% CI, 0.62 to 0.82), and positive predictive value: 0.88 (95% CI, 0.82 to 0.93). ID Migraine showed also a very good accuracy level: 0.87 (95% CI, 0.83 to 0.92).
  
  
  CONCLUSIONS
  This validation study showed "ID Migraine" as a valid tool for migraine screening also in Italian patients referring to headache centers. If confirmed in a primary care setting, these results establish the "ID Migraine" as a valid screening instrument for migraine in Italian population.
authors.affiliation: Department of Neurological Sciences, University of Palermo, Palermo, Italy.
authors.forename: Filippo
authors.initials: F
authors.lastname: Brighina
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Salemi
authors.forename: Brigida
authors.initials: B
authors.lastname: Fierro
authors.forename: Antonio
authors.initials: A
authors.lastname: Gasparro
authors.forename: Antonio
authors.initials: A
authors.lastname: Balletta
authors.forename: Antonina
authors.initials: A
authors.lastname: Aloisio
authors.forename: Giovanni
authors.initials: G
authors.lastname: La Pegna
authors.forename: Giovanna
authors.initials: G
authors.lastname: Randisi
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Saporito
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Calagna
authors.forename: Filippo
authors.initials: F
authors.lastname: La Naia
authors.forename: Rossana
authors.initials: R
authors.lastname: Morana
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007558:Italy; D008297:Male; D008403:Mass Screening / Q000379:methods / Q000592:standards*; D008881:Migraine Disorders / Q000175:diagnosis*; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*