Individualized measures of outcome versus standardized rating scales in evaluation of in-hospital psychiatric treatment. A methodological study.

The differentiating power of two individually related measures of outcome, target complaints and psychiatrists' evaluation of individually defined treatment objectives, were studied in two models of treatment planning, one with and one without active patient participation. Target complaints were measured at admission, after 5 days and at discharge. Treatment objectives were initially defined in written treatment contracts and evaluated at discharge. These measures were compared with patients' self-reported symptoms as well as with independently rated clinical symptoms at admission and discharge. Both target complaints and psychiatrists' evaluations measured improvement during treatment. The differentiating power between the two experimental conditions was, however, much weaker than that of the symptom rating scales. The psychiatrists' evaluations were strongly influenced by state at discharge and only to a minor extent by changes during treatment. It is concluded that symptom rating scales are superior to individualized measures of outcome in studies on a general psychiatric ward, possibly because the patients are fairly homogenous concerning anxiety.