The Validity and Reliability of the Indonesian Version of the Chronic Liver Disease Questionnaire (CLDQ) in Measuring Quality of Life in Patients with Liver Cirrhosis

BACKGROUND: Liver cirrhosis remains the major cause of liver-related morbidity and mortality around the world. Cirrhosis also negatively affects health-related quality of life. Quality of life evaluation in cirrhosis treatment is often overlooked, despite its importance compared to traditional outcome. One of the specific tools to measure quality of life in cirrhosis patient is the Chronic Liver Disease Questionnaire (CLDQ). Although this tool has been widely used in many countries, no studies have been conducted on its validity and reliability in the Indonesian language. This study aimed to assess the validity and reliability of the Indonesian version of CLDQ using appropriate methods. METHODS: This is a cross-sectional study conducted at Hepatobiliary outpatient clinic in Dr. Cipto Mangunkusumo National General Hospital (RSCM), from April-May 2021. The CLDQ was first translated into the Indonesian language and subsequent pretest was performed on 10 people, resulting in the final Indonesian version of the CLDQ. The final version was later tested in the main study with larger number of subjects (52 people). Validity was assessed using construct and external validity tests, while reliability was tested using internal consistency and test-retest methods. RESULTS: The Indonesian version of CLDQ had a good construct validity (r 0.613-0.917), moderate external validity (54.1%), strong correlations between CLDQ and SF-36, good internal consistency (Cronbach-Alpha ≥ 0.7), and good test-retest reliability (ICC > 0.7). CONCLUSION: The Indonesian version of CLDQ is valid and reliable in measuring the quality of life of liver cirrhosis patients in Indonesia.