In psychiatric practice, the assessment of change from pre- to post-treatment is a key approach for monitoring treatment effects and for the prediction of treatment outcomes. The Health of the Nation Outcome Scales (HoNOS) as a clinician-rated measure and the Brief Symptom Inventory (BSI) as a self-report measure are tools (that are) often incorporated in outcome monitoring. Their usefulness, however, has been questioned by two important issues: their psychometric properties and their lack of concordance.

The aim of the study is to evaluate the responsiveness of HoNOS and BSI as well as their interactions to predict clinical meaningful change according to the Global Clinical Impression (CGI) as quasi-gold standard for treatment outcome.

A consecutive sample of patients admitted to a Swiss psychiatric hospital for either alcohol use disorders, schizophrenic psychoses, mood disorders, anxiety and somatoform disorders, or personality disorders was assessed with Brief Symptom Inventory (BSI) at admission and discharge. The HoNOS and the CGI were rated by the responsible clinicians at admission and discharge. Ordinal logistic regressions will be conducted using the CGI categories as ordered categorical outcome. HoNOS and BSI scores as well as their interaction terms will be used as independent variables.

Complete data of admission and discharge is available from approximately 600 cases. Graphical presentations will illustrate the resulting associations.