Development and Validation of the Vision-Related Dizziness Questionnaire

Armstrong, Deborah; Alderson, Alison; Davey, Christopher J.; Elliott, David B.

doi:10.3389/fneur.2018.00379

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…Rasch analysis has been increasingly used in the development and refinement of healthcare outcome instruments for many conditions including for balance and dizziness (Tesio et al 1999; Belvedere & de Morton 2010; Di Carlo et al 2016; Armstrong et al 2018; Rivera et al 2019; Seamon et al 2019). In our dataset, neither the total score, nor the separate constructs, fulfilled all criteria for unidimensionality on PCA, thereby suggesting that the instrument may be measuring multiple constructs.…”

Section: Discussionmentioning

confidence: 99%

Item Level Psychometrics of the Dizziness Handicap Inventory in Vestibular Migraine and Meniere’s Disease

Rizk,

Velozo,

Shah

et al. 2023

Ear &Amp; Hearing

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Objectives: Evaluate the measurement properties of the Dizziness Handicap Inventory (DHI) using item response theory in patients diagnosed with vestibular migraine (VM) and Meniere’s disease (MD). Design: One hundred twenty-five patients diagnosed with VM and 169 patients diagnosed with MD by a vestibular neurotologist according to the Bárány Society criteria in two tertiary multidisciplinary vestibular clinics and who completed the DHI at their initial visit, were included in the study. The DHI (total score and individual items) was analyzed using the Rasch Rating Scale model for patients in each subgroup, VM and MD, and as a whole group. The following categories were assessed: rating-scale structure, unidimensionality, item and person fit, item difficulty hierarchy, person-item match, and separation index, standard error of measurement, and minimal detectable change (MDC). Results: Patients were predominantly female (80% of the VM subgroup and 68% of the MD subgroup) with a mean age of 49.9 ± 16.5 years and 54.1 ± 14.2 years, respectively. The mean total DHI score for the VM group was 51.9 ± 22.3 and for the MD group was 48.5 ± 26.6 (p > 0.05). While neither all items nor the separate constructs met all criteria for unidimensionality (i.e., items measuring a single construct), post hoc analysis showed that the all-item analysis supported a single construct. All analyses met the criterion for showing a sound rating scale and acceptable Cronbach’s alpha (≥0.69). The all-item analysis showed the most precision, separating the samples into three to four significant strata. The separate-construct analyses (physical, emotional, and functional) showed the least precision, separated the samples into less than three significant strata. Regarding MDC, the MDC remained consistent across the analyses of the different samples; approximately 18 points for the full analyses and approximately 10 points for the separate construct (physical, emotional, and functional). Conclusions: Our evaluation of the DHI using item response theory shows that the instrument is psychometrically sound and reliable. The all-item instrument fulfills criteria for essential unidimensionality but does seem to measure multiple latent constructs in patients with VM and MD, which has been reported in other balance and mobility instruments. The current subscales did not show acceptable psychometrics, which is in line with multiple recent studies favoring the use of the total score. The study also shows that the DHI is adaptable to episodic recurrent vestibulopathies. The total score shows better precision and separation of subjects in up to four strata compared to the separate construct that separate subjects into less than three strata. The measurement error smallest detectable change was found in our analysis to be 18 points, which means any change in the DHI of less than 18 points is not likely to be clinically significant. The minimal clinically important difference remains indeterminate.

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Section: Discussionmentioning

confidence: 99%

Item Level Psychometrics of the Dizziness Handicap Inventory in Vestibular Migraine and Meniere’s Disease

Rizk,

Velozo,

Shah

et al. 2023

Ear &Amp; Hearing

View full text Add to dashboard Cite

show abstract

“…. 현재까지 어지럼, 균형 및 전정 장애와 관련한 임상척도 중에서는 Dizziness Handicap Inventory (DHI) [16] 를 포함하여 Vision-Related Dizziness Questionnaire [17], Vestibular Activities and Participation Questionnaire [18], Vestibular Screening Tool [19], Berg Balance Scale [20]…”

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Rasch Analysis of the Clinimetric Properties of the Korean Dizziness Handicap Inventory in Patients with Parkinson Disease

Lee¹,

Yang²,

Yang³

et al. 2018

Res Vestib Sci

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Objectives: The Korean Dizziness Handicap Inventory (KDHI), which includes 25 patient-reported items, has been used to assess self-reported dizziness in Korean patients with Parkinson disease (PD). Nevertheless, few studies have examined the KDHI based on item-response theory within this population. The aim of our study was to address the feasibility and clinimetric properties of the KDHI instrument using polytomous Rasch measurement analysis. Methods: The unidimensionality, scale targeting, separation reliability, item difficulty (severity), and response category utility of the KDHI were statistically assessed based on the Andrich rating scale model. The utilities of the orderedresponse categories of the 3-point Likert scale were analyzed with reference to the probability curves of the response categories. The separation reliability of the KDHI was assessed based on person separation reliability (PSR), which is used to measure the capacity to discriminate among groups of patients with different levels of balance deficits. Results: Principal component analyses of residuals revealed that the KDHI had unidimensionality. The KHDI had satisfactory PSR and there were no disordered thresholds in the 3-point rating scale. However, the KDHI showed several issues for inappropriate scale targeting and misfit items (items 1 and 2) for Rasch model. Conclusions: The KDHI provide unidimensional measures of imbalance symptoms in patients with PD with adequate separation reliability. There was no statistical evidence of disorder in polytomous rating scales. The Rasch analysis results suggest that the KDHI is a reliable scale for measuring the imbalance symptoms in PD patients, and identified parts for possible amendments in order to further improve the linear metric scale.

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Both sub-scales of the “Keratoconus End-Points Assessment Questionnaire” (KEPAQ) are unidimensional and reliable

Balparda

Herrera-Chalarca

Torres-Soto

et al. 2020

Graefes Arch Clin Exp Ophthalmol

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Development and Validation of the Vision-Related Dizziness Questionnaire

Cited by 3 publications

References 27 publications

Item Level Psychometrics of the Dizziness Handicap Inventory in Vestibular Migraine and Meniere’s Disease

Item Level Psychometrics of the Dizziness Handicap Inventory in Vestibular Migraine and Meniere’s Disease

Rasch Analysis of the Clinimetric Properties of the Korean Dizziness Handicap Inventory in Patients with Parkinson Disease

Both sub-scales of the “Keratoconus End-Points Assessment Questionnaire” (KEPAQ) are unidimensional and reliable

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