Performance of the Self-administered Psoriasis Area and Severity Index in Evaluating Clinical and Sociodemographic Subgroups of Patients With Psoriasis

Abstract
IN CLINICAL practice, as well as in clinical research, it is important to objectively and accurately measure disease severity using standardized methods, both to compare different patients with different disease characteristics (discriminative properties) and to monitor the disease course within individual patients (evaluative properties).1,2