The Outcome Questionnaire-45.2 (OQ-45.2) is purported to measure important areas of functioning (symptoms, interpersonal problems social role functioning and quality of life) that are of central interest in mental health. In recent years research employing the OQ-45.2 has focused on tracking patient change over time and indicating if and when patients return to a normal state of functioning as proposed by criteria for clinically significant change. This study examined the OQ-45.2 cut-off scores for clinical significance by comparing concordance rates with cut-off scores based on other measures of psychotherapy outcome. Instruments of each area of functioning were administered to patients undergoing psychotherapy at the beginning and end of
