© 2000 by Oxford University Press and the Maryland Psychiatric Research Center (MPRC)
Course Patterns of Psychosocial Functioning in Schizophrenia Patients Attending a Vocational Rehabilitation Program
Research and Clinical Psychologist and Lecturer, University Psychiatric Services Bern, Department of Social and Community Psychiatry, University of Bern Switzerland
Senior Lecturer and Associate Medical Director, University Psychiatric Services Bern, Department of Social and Community Psychiatry, University of Bern Switzerland
Send reprint requests to Dr. Z. Kupper, University Psychiatric Services Bern, Dept. of Social and Community Psychiatry, Laupenstrasse 49, P.O. Box 52, CH-3010 Bern, Switzerland; e-mail: zeno.kupper{at}spk.unibe.ch
Although considerable research has been undertaken on psychosocial treatment and rehabilitation of patients with chronic schizophrenia, few studies have examined individual courses by means of repeated and frequent observation. A more dynamic view of rehabilitation might disclose patterns of response useful for both understanding and treating symptoms and disabilities associated with chronic schizophrenia. In an exploratory study, time series of 35 schizophrenia out-patients participating in a vocational rehabilitation program were examined by a relatively original quantitative approach to the identification of dynamical patterns. By using time series regression on weekly behavioral ratings, dynamical properties of mean, trend, and variability were calculated. Cluster analysis revealed five subgroups of courses: (1) stable at a high level, (2) fluctuating at a middle level, (3) at a middle level, tending toward a slight descent, (4) showing a steep descent, and (5) unstable at a low level of functioning. The subgroups varied at intake in psychopathology; in cognitive dysfunction; and in measures of self-concept, locus of control, and coping. At program end, pronounced differences were found among the subgroups in vocational reintegration. These different dynamical patterns can be understood as typical pathways linking patient characteristics to rehabilitation outcome. A broader use of dynamical designs could substantially clarify the variety of reactions of patients to psychosocial interventions.
Keywords: Psychosocial functioning / longitudinal studies / time factors / subtypes of courses / classification of courses / vocational rehabilitation / response to psychosocial rehabilitation