The expert committee discussed each item and considered comments. Polling resulted in lower scores in items 2, 3, 4, 6, 10, 15, 19, and 22. Regarding another word, some comments mentioned by the specialists in their meeting were chosen as being the most appropriate. For “flickering” and “tingling,” the correct definition was selected by an optometrist and a physiotherapist. Translation and cross-cultural adaptationĭuring different phases of translation, there were some differences in definitions, such as flickering, tingling, and disorientation. Cronbach's alpha values >0.7 were considered good. Internal consistency was tested by Cronbach's alpha. SEM and SDC are calculated by standard deviation (SD) × and 1.96×, respectively. In addition, the standard error of measurement (SEM) and the smallest detectable of change (SDC) are two reliability measures that assess response stability.
Significant difference between the median scores for patient and healthy groups was reported in discriminate validity ( P 0.7 was considered satisfactory. Internal validity was confirmed and demonstrated the presence of two vertigo (VSS-VER) and autonomic-anxiety (VSS-AA) subscales.
Results: The VSS-P showed good face validity. Internal, discriminant, and convergent validities, internal consistency, and test-retest reliability were determined. They completed the Persian versions of VSS, dizziness handicap inventory (DHI), and Beck anxiety inventory (BAI). Cross-cultural adaptation was carried out on 101 patients with peripheral vestibular disorders and 34 participants with no history of vertigo. Materials and Methods: VSS was translated into Persian. Our aim is the translation and cross-cultural adaptation of the VSS into Persian language (VSS-P) and investigating its validity and reliability in patients with peripheral vestibular disorders. Background: Vertigo Symptom Scale (VSS) is a proper instrument for assessing the patient status, clarifying the symptoms, and examining the relative impact of the vertigo and anxiety on reported handicap.
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