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  • Title: [Psychometrics of the chronic liver disease questionnaire for patients with posthepatitic B cirrhosis].
    Author: Hu XC, Zhang H, Lin Y, Zhou Y, Liu P.
    Journal: Zhonghua Gan Zang Bing Za Zhi; 2012 Aug; 20(8):621-7. PubMed ID: 23207158.
    Abstract:
    To report on the validity and reliability of the Chronic Liver Disease Questionnaire (CLDQ) for assessing subjects with posthepatitic B cirrhosis. The CLDQ was administered to 117 healthy volunteers and 297 patients with posthepatitic B cirrhosis. All posthepatic B cirrhosis patients were assessed for the Child-Pugh stage. The entire questionnaire and each individual item was analyzed for precision and reliability. Exploratory factor analysis, responsiveness, and discrimination validity were also assessed. No significant floor effects were detected, but a moderate ceiling effect (less than 30%) was found for the following subscales: abdominal symptoms (AS), activity (AC), and worry (WO). For most items, the ceiling effect was between 30% to 60%. The internal consistency (Cronbach's a) on total scale level was good (a = 0.905), and ranged from 0.442 to 0.848 for the different subscales. The correlation coefficients of the total scale with subscales were above 0.6 (P less than 0.01) for reliability. The CLDQ and subscale scores for healthy controls were higher than those for the patients (P less than 0.001), and were gradated from the patients with Child-Pugh A cirrhosis to those with Child-Pugh B or C cirrhosis. Increase in severity of liver disease was accompanied by lower scores by the CLDQ and 4 out 6 subscales. Exploratory factor analysis moderately reproduced the original factor structure. The CLDQ has good reliability, satisfactory content, responsiveness and discriminant validity, and moderate precision and construct validity. It is useful for effectively evaluating health-related quality of life and curative effect in patients with posthepatitic B cirrhosis.
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