The Usefulness of the Korean Version of Penn State Worry Questionnaire for Screening Generalized Anxiety Disorder: A Receiver Operating Characteristic Analysis

ry was identified as one of GAD symptoms in the DSM-III, in subsequent editions, the concept of worry gained increasing centrality to the diagnosis of GAD. In the DSM-IV, GAD is characterized by chronic, excessive, and uncontrollable worry about a variety of topics that has occurred most days over a period of at least six months. Although worry is associated with all anxiety disorders, ex-cessive worrying about minor matters and a sense that this worry is uncontrollable have risen as the factors that distin-guish worry in GAD from that in other anxiety disorders.