Checking the Turkish Situational Vertigo Questionnaire for measuring situational dizziness
Turkish Adaptation of the Situational Vertigo Questionnaire: Validity and Reliability Study
This project will test whether the Turkish version of the Situational Vertigo Questionnaire reliably measures dizziness in adults whose symptoms are triggered by visual or environmental cues.
Quick facts
| Study type | Observational |
|---|---|
| Enrollment | 3 (estimated) |
| Ages | 18 Years and up |
| Sex | All |
| Sponsor | Istanbul Medipol University Hospital Academic / other |
| Locations | 1 site (Bağcılar, Güneşli) |
| Trial ID | NCT07468864 on ClinicalTrials.gov |
What this trial studies
The study is a methodological adaptation and psychometric evaluation of the Situational Vertigo Questionnaire into Turkish using a back-and-forth translation process and a pilot application to ensure linguistic and cultural equivalence. For the psychometric phase, the plan is to recruit a sample size of at least ten times the number of questionnaire items and to collect responses on the SVQ alongside the Dizziness Handicap Inventory (DHI), Vertigo Symptom Scale (VSS), and a Visual Analog Scale (VAS). Test-retest reliability will be assessed by repeating the SVQ in a subset of participants, and statistical analyses will examine internal consistency, construct validity, and reliability. Inclusion criteria require adults (≥18) who read and write Turkish, have situational dizziness, and are cognitively able to consent (MMSE ≥24), while people with acute neurological disease, recent vestibular surgery, or severe cognitive/communication impairment are excluded.
Who should consider this trial
Good fit: Adults (18 and over) who can read and write Turkish, report dizziness triggered by visual or environmental stimuli, and have the mental capacity to consent (MMSE ≥24) are ideal candidates.
Not a fit: People without situational dizziness, those who cannot read Turkish, have significant cognitive impairment, recent vestibular surgery, or acute neurological disease, or who cannot travel to the study site are unlikely to benefit from participation.
Why it matters
Potential benefit: If successful, clinicians in Turkey would have a validated Turkish SVQ to more reliably measure and track situational dizziness symptoms.
How similar studies have performed: Previous language adaptations of vestibular symptom questionnaires using back-translation and psychometric testing have generally produced reliable and valid instruments, so this approach follows established methods.
Eligibility criteria
Show full inclusion / exclusion criteria
Inclusion Criteria: * Presence of dizziness triggered by visual or environmental stimuli * Able to read and write Turkish * Voluntary agreement to participate in the study * Having the mental capacity to give informed consent (Mini Mental State Scale score ≥ 24) Exclusion Criteria: * Individuals with severe cognitive impairment or communication difficulties * Acute neurological disease (stroke, acute MS relapse, etc.) * Having undergone vestibular surgery within the last 3 months
Where this trial is running
Bağcılar, Güneşli
- Güneşli Erdem Hastanesi — Bağcılar, Güneşli, Turkey (Türkiye) (Recruiting)
Study contacts
- Study coordinator: Ebru Sever, MsC, PT
- Email: ebru.sever@kocaelisaglik.edu.tr
- Phone: 05336824227
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.