[Diagnostic accuracy of the McLean Screening Instrument for borderline personality disorder in an inpatient sample who seek a disorder-specific treatment].

Borderline personality disorder (BPD) is considered as the most prevalent personality disorder in an inpatient setting. The McLean Screening Instrument for Borderline Personality Disorder (MSI-BPD) was developed to identify individuals with BPD reliably, valid and economically. To examine the discriminatory ability and diagnostic efficiency of the German version of the MSI-BPD in a sample with patients who meet probable BPD and seek a disorder-related inpatient treatment program. Based on a sample (N=298) containing 178 BPD-patients (60%), the area under the curve was AUC=0.70 (CI 95%: 0.64<AUC<0.76). Using the preferred cut-off point of>7. 84% of individuals with BPD (sensitivity) and 39% of individuals without BPD were identified correctly (specificity). Results suggest that a self-rated screening measure as the MSI-BPD should not be used in a sample with patients who meet probable BPD.