T1 - The 25-item Dizziness Handicap Inventory was shortened for use in general practice by 60 percent Conclusion: The DHI-S is a valid, reliable, and responsive questionnaire that could replace the DHI in general practice.", DHI-S reliably distinguished substantial impairment and identified MIC, with optimal DHI-S cutoff scores of ≥12 points and >5 points, respectively. Results: DHI-S demonstrated excellent criterion validity (r = 0.93–0.96), test–retest reliability (ICC = 0.86), and responsiveness (r = 0.89). We determined optimal DHI-S cutoff points for substantial impairment (≥30 DHI) and MIC (>11 DHI) with receiver operating characteristic (ROC) curve analyses. We used longitudinal measurements for test–retest reliability (intraclass correlation coefficient (ICC)) and responsiveness (r). We assessed validity by criterion validity (Pearson's r) at each measurement. DHI answers were used to calculate DHI-S scores. In a prospective cohort study, 415 adults with vestibular symptoms filled out the DHI at baseline, and 1-week, 6-month, and 10-year follow-up. Study Design and Setting: We performed a psychometric questionnaire evaluation in general practice. The objective of this study was to assess validity, reliability, responsiveness, optimal cutoff point for substantial impairment, and minimally important change (MIC) of the DHI-S in general practice. However, the abbreviated 10-item DHI-S is more suitable for daily practice. Conclusion: The DHI-S is a valid, reliable, and responsive questionnaire that could replace the DHI in general practice.Ībstract = "Objectives: The 25-item Dizziness Handicap Inventory (DHI) is the most used questionnaire to assess vestibular symptoms. Objectives: The 25-item Dizziness Handicap Inventory (DHI) is the most used questionnaire to assess vestibular symptoms.
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