title: The Community Assessment of Psychic Experience (CAPE) questionnaire as a screening-instrument in the detection of individuals at ultra-high risk for psychosis.
abstract: Recent findings on intervention options in individuals at ultra-high risk (UHR) for psychosis underline the necessity of a screening tool that facilitates early detection in low-threshold, non-specialized settings. The aim of this study was to examine, whether the Community Assessment of Psychic Experience (CAPE) could be used as a screening tool to detect individuals at an increased risk for developing psychosis in a clinical, help-seeking population. The utility of the CAPE was assessed against the Comprehensive Assessment of At-Risk Mental States (CAARMS). The CAPE is a 42-item self-report questionnaire that proved to be stable, reliable and valid for self reported psychotic-like experiences in the general population. 165 individuals between 13 and 24years of age were assessed for being at UHR for developing psychosis. 50.9% individuals were CAARMS-positive and 49.1% were CAARMS-negative. The ROC-analysis provided two cut-off points: The cut-off value of 3.20 in the positive dimension showed a sensitivity of 67%, a specificity of 73%, a positive predictive value of 72% and a negative predictive value of 68%. The cut-off value of 2.80 in the positive dimension showed a higher sensitivity (83%) and a better negative predictive value (74%), but a lower specificity (49%) and a reduced positive predictive value (63%). Our results show promise that the CAPE is a valid, simple and cost-effective instrument for detecting individuals at UHR in a clinical population. It may represent a useful screening tool for calling clinicians' attention to subjects with psychotic-like experiences.
authors.affiliation: Department of Child and Adolescent Psychiatry, Medical University Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria. nilufar.mossaheb@meduniwien.ac.at
authors.forename: Nilufar
authors.initials: N
authors.lastname: Mossaheb
authors.forename: Jana
authors.initials: J
authors.lastname: Becker
authors.forename: Miriam R
authors.initials: MR
authors.lastname: Schaefer
authors.forename: Claudia M
authors.initials: CM
authors.lastname: Klier
authors.forename: Monika
authors.initials: M
authors.lastname: Schloegelhofer
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Papageorgiou
authors.forename: G Paul
authors.initials: GP
authors.lastname: Amminger
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D008297:Male; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000175:diagnosis* / Q000523:psychology*; D012372:ROC Curve; D018570:Risk Assessment; D012307:Risk Factors; D057566:Self Report; D011795:Surveys and Questionnaires; D055815:Young Adult