The aim of the Outcome Questionnaire (OQ) system is to provide measures and methods to enhance treatment outcomes for psychological disorders, especially for patients whose progress and eventual positive outcome are in doubt, by providing progress information directly to practitioners. The system consists of several adult and youth measures contained in the software OQ-Analyst. This entry first describes the measures in the OQ system and then discusses various aspects of the system, including the domains assessed, psychometric properties, assessment, and feedback from clinicians and patients.


The central measure within the OQ-Analyst is the Outcome Questionnaire-45 (OQ-45), first developed and distributed in the United States in 1993 and a frequently used self-report instrument for measuring adult patient outcome in the United States. Unlike many other psychological ...

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