Cut-off Scores and Clinical Change Indices for the Dutch Outcome Questionnaire (OQ-45) in a Large Sample of Normal and Several Psychotherapeutic Populations

The Outcome Questionnaire-45 (OQ-45; Lambert et al., ) has been designed for frequent assessment of a patient's functioning during the course of psychotherapy and has become one of the most frequently used outcome measures in the Netherlands. The OQ-45 was originally normed on outpatients in secondary care only, but is applied in a wide variety of patient populations. As such, it has become increasingly important to provide cut-off scores with the normal population, as well as between different patient populations. The present large-scale Dutch study aims to provide cut-off scores between seve... Mehr ...