Defining, operationalizing and measuring the duration of untreated psychosis: advances, limitations and future directions

Abstract

AbstractObjective: Substantial converging evidence from schizophrenia researchers indicates that the duration of untreated psychosis (DUP) represents a modifiable predictor of outcome during the early course of schizophrenia. As DUP is increasingly assessed in research settings, focused attention should be given to the complexities of measurement of this critical construct. In this review, three aspects of measurement are addressed: (i) definition of DUP, (ii) operational criteria for the construct, and (iii) methods used for measurement. Recent advances, current limitations and future directions are discussed.Methods: Inclusion of published articles for this systematic review was based on t..