| Objective:Translate the Dizziness Handicap Inventory(DHI) into Chinese version,to assess the quality of life of BPPV patients and to determine whether the Chinese version of DHI and the new subscale of DHI could assist in the screening of BPPV patients.Methods:1.Translate the English version of DHI scale into Chinese version by the translation team.And after the preexperiment,the Chinese version of the DHI scale for this study is obtained finally;2.Between April 1,2014 and November 31,2014,185 consecutive outpatients complained of vertigo were enrolled form the neurology and otolaryngology of the first affiliated hospital of shanxi medical university. Record the basic information of patients and the DHI scores by patients fill out themselves or a face to face interview. According to the gold standard 185 patients is divided into BPPV group(75 patients)and non-BPPV group(110 patients). Statistics was analysised by nonparameter Mann-Whitney U test,logistic regression analysis.Evaluation index using the sensitivity, specificity and positive likelihood ratio, drawing the ROC curve, and calculating the area under the curve and determine the cut-off point. The test level was 0.05, P<0.05 for statistical significance was used.Results:1.40.5% of all patients with vertigo was BPPV, the ratio of male to female was 1:1.8,mean age is 54.81±12.95 years.62(82.67%) patients with posterior semicircular canal BPPV, 9(12.00%) patients with horizontal semicircular canal BPPV and 4(5.33%) patients with mixed semicircular canal BPPV;2.The mean DHI total score of 75 patients with BPPV was 47.74±16.82 points, in which patients with BPPV the quality of life affected by light, medium and heavy accounted for 14.67%、68.00% and 17.33% respectively;3.Patients with BPPV reported significantly higher mean values on the DHI-5(z=5.597,P<0.001)and DHI-2 score(z=6.347,P<0.001)than the non-BPPV patients.No significant differences in the total DHI,DHI-E sub-scale,DHI-F sub-scale,DHI-P sub-scale were observed in the two groups;4.The BPPV DHI-5 sub-score( χ2=34.51,υ=1,P<0.001) and DHI-2sub-score(χ2=34.49, υ=4, P<0.001)were significant predictor of likelihood of BPPV.Especially the odds ratios of patients who had a score of 4,6,8 point on the DHI-2sub-score was 4.88,12.00,18.45 than a patient who had a score of 0 respectively. And the sensitivity and specificity of a score with 8 are 54.67% and 82.70%;5.The area under ROC curve drawn by DHI-2 and DHI-5 score were0.767(SE=0.035,95%CI:0.698-0.836)and0.741(SE=0.036,95%CI:0.671-0.812),the cut-off points were: 6 points and 12 points.Conclusions:1.BPPV is one of the common causes of vertigo, more women than men in the prevalence,and the elderly are more susceptible.The posterior semicircular canal bppv is the most common type of BPPV;2.BPPV patients’ quality of life in the emotional, physical, functional aspects affected by different degree, and given priority to with moderately severe, clinical work should pay attention to the comprehensive management of patients in the treatment;3.The Chinese version of DHI-5 and DHI-2 sub-score appear to be helpful in determining the likelihood of an individual having the diagnosis of BPPV, the higher thescore tips with the greater the chance of BPPV.The implication is further if the DHI-5score is greater than or equal to 12 points or DHI-2 score is greater than or equal to 6points.A patient who had a score of 8 on DHI-2 subscale was approximately 18.45 times more likely to have had BPPV than a patient who had a score of 0. |
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