“…Evaluative measures are the most widely used in different populations or patients groups (Preedy et al, 2010). It is used to assess the impact of an illness, effectiveness or side effect of treatment, and quality of healthcare delivery (Preedy et al, 2010;Yacavone et al, 2001). Discriminative measures can be used to differentiate between groups in terms of HRQOL (Preedy et al, 2010;Yacavone et al, 2001).…”