![]() Kurre A, Bastiaenen CH, van Gool CJ, Gloor-Juzi T, de Bruin ED, Straumann D.Introduction to health measurement scales. Tutorials in Quantitative Methods for Psychology 2013 9(2):79-94. A Beginner’s Guide to Factor Analysis: Focusing on Exploratory Factor Analysis. Practical Assessment Research & Evaluation, 2005:10(7). Best practices in exploratory factor analysis: four recommendations for getting the most from your analysis. Psychometric Properties of the Persian version of the Tinnitus Handicap Inventory (THI-P). Jalali MM, Soleimani R, Fallahi M, Aghajanpour M, Elahi M.Measuring agreement in method comparison studies. Quantifying test-retest reliability using the intra class correlation coefficient and the SEM. Individual-patient monitoring in clinical practice: are available health status surveys adequate? Qual Life Res 1995 4:293-307. Rating the methodological quality in systematic reviews of studies on measurement properties: a scoring system for the COSMIN checklist. Terwee CB, Mokkink LB, Knol DL, Ostelo RW, Bouter LM, de Vet HC.Zigmond AS, Snaith RP: The Hospital Anxiety and Depression Scale.(SF-36): translation and validation study of the Iranian version. Montazeri A, Goshtasebi A, Vahdaninia M, Gandek B.Porta F, Caselli S, Susassi S, Cavallini P, Tennant A, Frances chini M.Is the Berg Balance Scale an internally valid and reliable measure of balance across different etiologies in neurorehabilitation? A revisited Raschanalysis study.Validity and reliability of the Persian version of the dizziness handicap inventory. Jafarzadeh S, Bahrami E, Pourbakht A, Jalaie SH, Daneshi A.Arch Otolaryngol Head Neck Surg 1990 116: The development of the Dizziness Handicap Inventory. Vestibular rehabilitation for whom and how? A systematic review. Epidemiology of vestibular vertigo: a neurotologic survey of the general population. Neuhauser HK, Von Brevern M, Radtke A, Lezius F, Feldmann M, Ziese T, et al.Factor analysis revealed a 2-factor solution which was different from the factor structure of the original DHI.Īs the findings indicated, the P-DHI had good psychometric properties therefore, it could serve as a useful tool for measuring disability in patients with dizziness and unsteadiness. This scale also demonstrated a moderate correlation with SF-36 and HADS. The P-DHI showed a fair correlation with vertigo severity which assesses functional disability subscale. The limits of agreement were 16 points for the total scale, and the range of intraclass correlation coefficients was 0.90-0.96. In addition, the functional, physical, and emotional subscales of this instrument had the Cronbach’s alpha coefficients of 0.76, 0.52, and 0.80, respectively. ![]() The Cronbach’s alpha coefficient of P-DHI scale was obtained as 0.86. An exploratory factor analysis was also run to determine the factor structure of the questionnaire. In addition, the relationships of the P-DHI with SF-36 and HADS were evaluated using the Spearman correlation coefficient. Internal consistency and reproducibility of the inventory were evaluated using the Cronbach’s alpha coefficient, Bland-Altman limits of agreement, and intraclass correlation coefficients. All patients re-completed the P-DHI after 2 weeks. The mean age of the patients was 44.5☑3.6 years. This cross-sectional study was conducted on 113 patients with dizziness and 30 healthy individuals referring to tertiary centers for otolaryngology and neurology, affiliated to Guilan University of Medical Sciences, Rasht, Iran. The current study also involved a comparison of the scores of patients and healthy participantsand implementation of a factor analysis. In addition, this research was targeted toward assessing the association of P-DHI withMedical Outcome Study 36-Item Short Form Health Survey (SF-36) and Hospital Anxiety and Depression Scale (HADS). The present study was designed to investigate the psychometric properties of the Persian version of the Dizziness Handicap Inventory (P-DHI). ![]()
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