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The aim of this study was to construct a rating scale for long-term outcome on the basis of clinical and sociodemographic characteristics in patients with symptoms of psychosis that seek help in psychiatry for the first time.
Patients (n = 153) experiencing their first episode of psychosis were consecutively recruited from 17 psychiatric clinics in Sweden from January 1996 to December 1997 (24 months). Baseline characteristics were assessed with an extensive battery of psychiatric rating scales, as well as the duration of untreated psychosis, family history of psychosis, premorbid characteristics and cognitive functioning. The relationship between baseline characteristics and the 5-year outcome was analyzed using a stepwise logistic regression model.
In the logistic regression analysis five variables were found to have unique contributions in the prediction of outcome. In order of magnitude of the odds ratios these variables were Global Assessment of Functioning (GAF) during the year before first admission, education, actual GAF at first admission, gender and social network. The sensitivity, i.e. correctly identified cases (poor outcome), was 0.84 and the specificity was 0.77, i.e. the correctly identified non-cases (good outcome).
To initiate adequate interventions it is crucial to identify patients with an unfavorable long-term outcome that are experiencing their first episode of psychosis. The predictive rating scale is a feasible tool for early detection of these patients
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