title: Visual vertigo analogue scale: an assessment questionnaire for visual vertigo.
abstract: A common symptom for people with vestibulopathy is dizziness induced by dynamic visual input, known as visual vertigo (VV). The goal of this study is to present a novel method to assess VV, using a nine-item analog scale. The subjects rated the intensity of their dizziness on each item of the Visual Vertigo Analogue Scale (VVAS), which represented a daily situation typically inducing VV. The questionnaire was completed by participants with vestibulopathy (n=102) and by subjects receiving out-patient orthopaedic physiotherapy (n=102). The dizziness handicap inventory (DHI) was also completed by the vestibulopathic group. The Cronbach's Alpha index indicated the VVAS is internally consistent and reliable (Cronbach's Alpha=0.94). The study also found that the VVAS severity scores from vestibular and a non-vestibular population were significantly different (Wilcoxon-Mann Whitney test p < 0.0001). Spearman correlation analysis conducted between DHI and VVAS scores for the clients with vestibulopathy showed positive moderate correlations between the VVAS score and the total DHI score (r=0.67, p< 0.0001). This study showed that the VVAS scale may be useful in providing a quantitative evaluation scale of visual vertigo.
authors.affiliation: Feil & Oberfeld Research Centre, Jewish Rehabilitation Hospital, Laval, QC, Canada. edannenbaum hjr@ssss.gouv.qc.ca
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Dannenbaum
authors.forename: Gevorg
authors.initials: G
authors.lastname: Chilingaryan
authors.forename: Joyce
authors.initials: J
authors.lastname: Fung
mesh_terms: D000328:Adult; D000368:Aged; D004244:Dizziness / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010045:Outpatients; D010147:Pain Measurement; D011795:Surveys and Questionnaires; D014717:Vertigo / Q000175:diagnosis*; D015837:Vestibular Diseases / Q000175:diagnosis / Q000534:rehabilitation