Inpatient and Day-Clinic Experience Scale (IDES) - a Psychometric Evaluation

The Inpatient and Day-Clinic Experience Scale (IDES) was developed to assess common factors in a multimodal psychotherapy setting from the patients' perspective. The questionnaire measures different aspects of therapeutic relationships, a positive self-view and a critical attitude towards therapy.

Three samples (total N = 821) were used to evaluate the psychometric properties and factor structure of the questionnaire.

Confirmatory analyses show a good model fit and support the proposed structure with 25 items and seven scales. In addition, reliability indices were stable throughout multiple assessments over time. Concerning validity, early IDES process measures were moderately associated with symptomatic improvement.

The IDES is a psychometrically reliable questionnaire for the evaluation of process factors in inpatient and day-clinic psychotherapy settings.