Abstract
Psychiatric symptoms/syndromes such as depression, apathy, anxiety or psychotic episodes are present in a range of neurological disorders including Parkinson's disease. The Structured Clinical Interview for DSM-IV (SCID) represents the gold standard for the assessment of psychiatric disorders but is often too time-consuming for application in clinical practice. 66 participants were examined using the screening items and the first two questions of section A of the SCID as well as the complete version of the SCID, part I. The accuracy of the screening and the complete SCID was evaluated, and logistic regression was conducted to analyze factors associated with measure disagreement between the two procedures. Overall, psychiatric disorders were identified by screening in 40/66 (60.6%), as against 31/66 (47.0%) using the complete SCID. Compared to the complete SCID, the sensitivity and specificity of the screening items were 88% and 59%, respectively. Based on its good sensitivity, the SCID screening may be used in clinical practice to yield an overview of psychiatric disorders that may require treatment. Due to its moderate specificity, however, the complete version of the SCID should be subsequently used in cases whenever the SCID screening is positive. In any case, the SCID screening must be regarded as inadequate for the detection of psychotic symptoms.
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