title: Establishing a "Vestibular Migraine Diagnosis Questionnaire" and Testing Its Validity.
abstract: OBJECTIVE
  To establish a questionnaire and check its validity and reliability for the diagnosis of vestibular migraine in patients reporting recurrent vestibular symptoms.
  
  
  BACKGROUND
  Vestibular migraine is the most common cause for recurrent spontaneous vertigo. However, it is still underdiagnosed needing validated and reliable screening instruments such as ID Migraine, that can be used in primary care settings, dizziness, and migraine clinics.
  
  
  METHODS
  Sixty consecutive patients referred to our dizziness clinic with recurring vestibular symptoms were given a questionnaire that they filled in, consisting of 8 short and simple questions. The questionnaire-based diagnosis was compared with the diagnosis based on face-to-face interview and clinical examination. Test stability was evaluated by asking the patients to fill in the questionnaire a week later during a second visit. κ analysis was used to assess item-specific test-retest reliability and also the conformity between the questionnaire-based diagnosis and the clinical diagnosis.
  
  
  RESULTS
  The conformity between the clinical diagnosis and the diagnosis based on the questionnaire was 83.3% and the κ coefficient was 0.666 (good). Sensitivity of the questionnaire was 82.8% (24/29) and the specificity was 83.9% (26/31). The κ values in test-retest repetition were good to excellent (0.71 to 0.87) when each question was considered.
  
  
  CONCLUSIONS
  The validity of the "Vestibular Migraine Diagnosis Questionnaire" was good and its reliability was good to excellent indicating that it can be used as a screening tool in identifying patients with vestibular migraine in our country.
authors.affiliation: Departments of *Neurology †Physical Medicine and Rehabilitation ‡Otorhinolaryngology, Head and Neck Surgery §Biostatistics and Medical Informatics, Ege University Medical School, İzmir, Turkey.
authors.forename: Nese
authors.initials: N
authors.lastname: Celebisoy
authors.forename: Hale
authors.initials: H
authors.lastname: Karapolat
authors.forename: Figen
authors.initials: F
authors.lastname: Gokcay
authors.forename: Cem
authors.initials: C
authors.lastname: Bilgen
authors.forename: Gulnur
authors.initials: G
authors.lastname: Ozgen
authors.forename: Tayfun
authors.initials: T
authors.lastname: Kirazli
authors.forename: Timur
authors.initials: T
authors.lastname: Kose
mesh_terms: D000328:Adult; D004244:Dizziness / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000150:complications / Q000175:diagnosis*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards*; D014717:Vertigo / Q000175:diagnosis* / Q000209:etiology