**2.4.3 State-Trait Anxiety Inventory (STAI) (Guillén-Riquelme, 2011)**

Since physical symptoms associated with end-stage liver disease, such as poor appetite and fatigue, are also associated with depression, the scores of liver transplant candidates in three separate areas, somatic, cognitive, and affective, have to be computed. Therefore, the State-Trait Anxiety Inventory is one of the most frequently used instruments for measuring anxiety in adults and has been demonstarted to be valid and reliable. It consists of 20 statements that assess how respondents feel "generally." Scores can vary between 20 and 80, with higher scores indicating more anxiety.
