**2.3.2 Chronic Liver Disease Questionnaire (CLDQ) (Younossi, 1999)**

This instrument introduced in 2000, has two parts: the generic SF-36 and six specific scales, with a number of individual items: abdominal symptoms, fatigue, systemic symptoms, activity, emotional function and worry. These items were selected based on 60 chronic liver disease patients, 20 liver experts and a review of the literature. Younossi et al. established construct validity according to significant differences in CLDQ scores according to Child's classification.
