title: [Analysis of reliability and validity of the Chinese Version of Dizziness Handicap Inventory (DHI)].
abstract: OBJECTIVE
  To investigate the reliability and validity of the Chinese Version of Dizziness Handicap Inventory (DHI).
  
  
  METHODS
  Cross-cultural adaptation of health-related quality of life measures was used for translating the DHI to Chinese version. The DHI contains 7 physical, 9 emotional, and 9 functional questions.The patients scored the DHI straightforward. Then the scores of the total scale and each subscales were calculated and evaluated.Three hundred and sixty-six dizzy patients,116 males and 250 females, aged from 14 to 79 years, were included in the research and finished the questionnaire of the evaluation.SPSS 13.0 was used for statistical analysis.
  
  
  RESULTS
  Reliability: Cronbach α values for the total and subscale of DHI were 0.751-0.912. The reliability coefficients were 0.877-0.921 (P < 0.001).
  
  
  RESULTS
  the correlation coefficients between the total scale and three subscale were 0.815-0.934 (P < 0.001). The correlation coefficients of the scores internal the subscale were higher than between the other subscale (r = 0.446-0.781). Common factor analysis provides 5 factors. The cumulative variance ratio was 54.5%. The component of each item was over 0.4.
  
  
  CONCLUSIONS
  Chinese version of DHI has good reliability and validity, which can be used to evaluate the dizzy patients.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing 100730, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China; Email: trliubo@139.com.
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.affiliation: Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China; Email: yongjunwang@gmail.com.
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Wang
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhou
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Gong
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Peng
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004185:Disability Evaluation; D004244:Dizziness / Q000175:diagnosis*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014717:Vertigo / Q000175:diagnosis*; D055815:Young Adult