title: Psychometrics of the chronic liver disease questionnaire for Southern Chinese patients with chronic hepatitis B virus infection.
abstract: OBJECTIVE
  To test the psychometric properties of a Chinese [(Hong Kong) HK] translation of the chronic liver disease questionnaire (CLDQ).
  
  
  METHODS
  A Chinese (HK) translation of the CLDQ was developed by iterative translation and cognitive debriefing. It was then administered to 72 uncomplicated and 78 complicated chronic hepatitis B (CHB) patients in Hong Kong together with a structured questionnaire on service utilization, and the Chinese (HK) SF-36 Health Survey Version 2 (SF-36v2).
  
  
  RESULTS
  Scaling success was > or = 80% for all but three items. A new factor assessing sleep was found and items of two (Fatigue and Systemic Symptoms) subscales tended to load on the same factor. Internal consistency and test-retest reliabilities ranged from 0.58-0.90 for different subscales. Construct validity was confirmed by the expected correlations between the SF-36v2 Health Survey and CLDQ scores. Mean scores of CLDQ were significantly lower in complicated compared with uncomplicated CHB, supporting sensitivity in detecting differences between groups.
  
  
  CONCLUSIONS
  The Chinese (HK) CLDQ is valid, reliable and sensitive for patients with CHB. Some modifications to the scaling structure might further improve its psychometric properties.
authors: Department of Medicine, The University of Hong Kong, Hong Kong, China. etplam@gmail.com
authors: Elegance Ting Pui
authors: ET
authors: Lam
authors: Cindy Lo Kuen
authors: CL
authors: Lam
authors: Ching Lung
authors: CL
authors: Lai
authors: Man Fung
authors: MF
authors: Yuen
authors: Daniel Yee Tak
authors: DY
authors: Fong
mesh_terms: D000328:Adult; D000368:Aged; D044466:Asian People; D003431:Cross-Cultural Comparison; D005260:Female; D006306:Health Surveys; D019694:Hepatitis B, Chronic / Q000503:physiopathology; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*