Results of the DSM-IV mood disorders field trial

Abstract

The results supported the use of a course-based classification system for major depression. They also suggested that the content validity of the DSM-III-R symptom criteria for dysthymia could be improved by emphasizing cognitive and social/motivational symptoms, although such changes are unlikely to sharpen the distinction between dysthymia and major depression. Finally, 91% of the subjects met the criteria for current or lifetime major depression or dysthymia, suggesting that additional categories for milder forms of depression are not needed.