title: Epidemiology of benign paroxysmal positional vertigo: a population based study.
abstract: OBJECTIVE
  To examine the prevalence and incidence, clinical presentation, societal impact and comorbid conditions of benign paroxysmal positional vertigo (BPPV) in the general population.
  
  
  METHODS
  Cross-sectional, nationally representative neurotological survey of the general adult population in Germany with a two stage sampling design: screening of 4869 participants from the German National Telephone Health Interview Survey 2003 (response rate 52%) for moderate or severe dizziness or vertigo, followed by validated neurotological interviews (n = 1003; response rate 87%). Diagnostic criteria for BPPV were at least five attacks of vestibular vertigo lasting <1 min without concomitant neurological symptoms and invariably provoked by typical changes in head position. In a concurrent validation study (n = 61) conducted in two specialised dizziness clinics, BPPV was detected by our telephone interview with a specificity of 92% and a sensitivity of 88% (positive predictive value 88%, negative predictive value 92%).
  
  
  RESULTS
  BPPV accounted for 8% of individuals with moderate or severe dizziness/vertigo. The lifetime prevalence of BPPV was 2.4%, the 1 year prevalence was 1.6% and the 1 year incidence was 0.6%. The median duration of an episode was 2 weeks. In 86% of affected individuals, BPPV led to medical consultation, interruption of daily activities or sick leave. In total, only 8% of affected participants received effective treatment. On multivariate analysis, age, migraine, hypertension, hyperlipidaemia and stroke were independently associated with BPPV.
  
  
  CONCLUSIONS
  BPPV is a common vestibular disorder leading to significant morbidity, psychosocial impact and medical costs.
authors.affiliation: Department of Neurology, Charité, Campus Virchow-Klinkum, Berlin, Germany. michael.von_brevern@charite.de
authors.forename: M
authors.initials: M
authors.lastname: von Brevern
authors.forename: A
authors.initials: A
authors.lastname: Radtke
authors.forename: F
authors.initials: F
authors.lastname: Lezius
authors.forename: M
authors.initials: M
authors.lastname: Feldmann
authors.forename: T
authors.initials: T
authors.lastname: Ziese
authors.forename: T
authors.initials: T
authors.lastname: Lempert
authors.forename: H
authors.initials: H
authors.lastname: Neuhauser
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015897:Comorbidity; D003430:Cross-Sectional Studies; D005260:Female; D005858:Germany / Q000453:epidemiology; D006306:Health Surveys; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011187:Posture; D015995:Prevalence; D012307:Risk Factors; D014717:Vertigo / Q000453:epidemiology*