Trial reportAnnals of medicine2025
The reliability and validity of the Swedish translation of the Vertigo Symptom Scale - short form in a cohort with acute vestibular syndrome.
Trial report in Annals of medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05056324 (Internet-based Vestibular Rehabilitation Versus Standard Care After Acute Onset Vertigo), which is not on this map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Internet-based Vestibular Rehabilitation Versus Standard Care After Acute Onset Vertigo
Who cites it
1 citing paper in PubMed.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe Vertigo Symptom Scale - short form (VSS-SF) is commonly used to measure dizziness and vertigo over the past month. This study aimed to (1) adapt the VSS-SF for the Swedish population and assess its psychometric properties, and (2) develop a modified version for measuring symptoms in the acute phase of acute vestibular syndrome (AVS).
methodsThe VSS-SF was translated into Swedish and adapted cross-culturally. Its psychometric properties were evaluated in 86 AVS patients, both in the acute stage (1-7 days from symptom onset) with a modified acute version, and after six weeks of vestibular rehabilitation using the standard VSS-SF. Factor structure, convergent and discriminant validity, and internal consistency were analyzed. Test-retest reliability was assessed at six weeks. Participants were also evaluated with the Dizziness Handicap Inventory (DHI) and balance tests. Controls included 54 healthy participants.
resultsExploratory factor analysis revealed a two-factor structure for both versions, corresponding to vertigo-balance (VSS-V) and autonomic-anxiety (VSS-A) subscales. Both versions demonstrated strong factor structures with adequate loadings. Internal consistency was high for the standard version (Cronbach's alpha 0.76 to 0.87) and for the total and VSS-V subscale of the acute version (0.82 and 0.85, respectively), but poor for the acute VSS-A subscale (0.50). Convergent validity was supported by Spearman's rank correlations. The discriminative ability was excellent for the acute VSS-SF and VSS-V (AUC 0.98 and 0.99), and acceptable for VSS-A (AUC 0.77). After six weeks, discriminative ability decreased but remained above 0.5. Test-retest reliability at six weeks was excellent for all scales (ICC 0.94, 0.93, and 0.93 for VSS-SF, VSS-V, and VSS-A).
conclusionsThe VSS-SF was successfully adapted for the Swedish population, including an acute version for early dizziness assessment. Both versions confirmed a robust two-factor structure, with the acute version showing excellent early discriminative ability, particularly for the vertigo-balance dimension. However, the autonomic-anxiety subscale showed weaker psychometric properties, suggesting limited suitability for AVS patients. The adapted scales show promise for clinical use in diagnosing and evaluating dizziness and vertigo in the Swedish population.
trial registrationClinicaltrials.gov Identifier NCT05056324, September 24, 2021. https://clinicaltrials.gov/ct2/show/NCT05056324.
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