Abstract
Introduction: The Dizziness Handicap Inventory (DHI) is a 25-item self-assessment questionnaire used to evaluate perceived disability from dizziness. The predictive validity of Timed Up and Go (TUG), Dynamic Gait Index (DGI), and modified Clinical Test of Sensory Integration of Balance (mCTSIB) on disability as shown by DHI has not been established specific to older adults with peripheral vestibular hypofunction. The purpose of this study is to investigate if the TUG, DGI, and mCTSIB are significant and strong predictors of the disability from dizziness as represented by the DHI scores in older adults with peripheral vestibular hypofunction. Methods: A Correlational, Retrospective Design was used to investigate the predictors of the DHI score. Data was collected retrospectively on the 17 patients in the main study ‘The Impact of Prescribed Walking on Dizziness in Seniors with Vestibular Hypofunction: A Pilot Randomized Controlled Trial’ and from physical therapy medical charts (n=24) from June 2015 to June 2018. Only medical charts of those 65 years and older who underwent vestibular physical therapy and contain all four outcome measures (DHI, DGI, mCTSIB, and TUG) were included in the study. Dizziness related to central nervous disorder were excluded. Results: There was a significant fair inverse correlation between DHI and mCTSIB (r = -0.381, p = 0.01) and DGI (r = -0.322, p = 0.01), and a fair correlation with TUG (r = 0.396, p = 0.03). The mCTSIB, TUG, and DGI accounted for 10% of the variance in the DHI, however, this predictive relationship was not found to be significant. Discussion: In this limited sample size, the TUG, DGI, and mCTSIB tests are not significant and strong predictors of dizziness-related disability as represented by the DHI scores in older adults with peripheral vestibular dysfunction. This study should be replicated as a large-scale prospective study with stratification of severity of dizziness to improve the generalizability of findings.
Highlights
The Dizziness Handicap Inventory (DHI) is a 25-item self-assessment questionnaire used to evaluate perceived disability from dizziness
The purpose of this study is to investigate if the Timed Up and Go (TUG), Dynamic Gait Index (DGI), and mCTSIB are significant and strong predictors of dizziness-related disability as measured by the Dizziness Handicap Inventory in older adults with peripheral vestibular hypofunction
Gender, treatment diagnosis, DHI, DGI, mCTSIB, and TUG were extracted from medical charts of 41 patients through convenience sampling: 17 from an ongoing study and 24 from a retrospective chart review
Summary
The Dizziness Handicap Inventory (DHI) is a 25-item self-assessment questionnaire used to evaluate perceived disability from dizziness. The purpose of this study is to investigate if the TUG, DGI, and mCTSIB are significant and strong predictors of the disability from dizziness as represented by the DHI scores in older adults with peripheral vestibular hypofunction. Medical charts of those 65 years and older who underwent vestibular physical therapy and contain all four outcome measures (DHI, DGI, mCTSIB, and TUG) were included in the study. Discussion: In this limited sample size, the TUG, DGI, and mCTSIB tests are not significant and strong predictors of dizziness-related disability as represented by the DHI scores in older adults with peripheral vestibular dysfunction. The Dizziness Handicap Inventory (DHI) is a 25-item self-assessment questionnaire that measures the impact of dizziness on the physical, functional and emotional domains of disability (Jacobson & Newman, 1990). Participation refers to the ability to participate in life’s roles such as homemaker or worker
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