Validated argentine version of the visual vertigo analogue scale

Author:

Verdecchia Daniel H.123,Hernandez Daniel34,Andreu Mauro F.1,Salzberg Sandra E.4,Whitney Susan L.5

Affiliation:

1. Physical Therapy Program, Health SciencesDepartment, Universidad Nacional de la Matanza, Buenos Aires, Argentina

2. Physical Therapy Program, UniversidadMaimónides, City of Buenos Aires, Argentina

3. Physical Therapy Program, Medical School, Universidad de Buenos Aires

4. Physical TherapyUnit, Acute Care Hospital “Carlos G. Durand”. City of BuenosAires, Argentina

5. Departments of Physical Therapyand Otolaryngology, University of Pittsburgh, Pittsburgh, PA, USA

Abstract

BACKGROUND: Visual vertigo (VV), triggered by environmental or dynamic visual stimuli and repetitive visual patterns, can affect daily life activities. The Visual Vertigo Analogue Scale (VVAS) is a valid and reliable self-administered questionnaire to assess VV, which has been culturally adapted to the Argentine population but has not been validated. OBJECTIVE: To validate the Argentine version of VVAS (VVAS-A) by confirming its psychometric properties in patients with vestibular disorders. METHODS: Vestibular patients (n = 82) completed the VVAS-A and the Dizziness Handicap Inventory Argentine version (DHI-A) during their initial visit and one week later. The VVAS-A's internal consistency, test retest reliability, ceiling and floor effects, and construct validity were determined. Test-retest data (n = 71) was used to calculate reliability using the intraclass correlation coefficient (ICC 2.1). RESULTS: A ceiling effect was observed in 12 patients (14.6%). Internal consistency was acceptable (Cronbach’s alpha: 0.91). The reliability was r = 0.764 [CI 95%: 0.7 –0.86]). Correlations were observed between the VVAS-A and the total DHI-A score (rho = 0.571), the DHI-A physical subscale (rho: 0.578), and DHI-A functional and emotional subscales of the DHI-A (rho: 0.537 and 0.387, respectively). CONCLUSION: VVAS-A is a valid, reliable tool to evaluate VV in patients with vestibular disorders.

Publisher

IOS Press

Subject

Neurology (clinical),Sensory Systems,Otorhinolaryngology,General Neuroscience

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