Faculty of Psychology, Universitas Indonesia, Depok, Indonesia.
Clinical Psychology and Psychotherapy, Institute of Psychology, Universität Hamburg, Hamburg, Germany.
Int J Methods Psychiatr Res. 2021 Dec;30(4):e1893. doi: 10.1002/mpr.1893. Epub 2021 Aug 31.
The need for a brief screening tool for psychosis is widely recognized. The Community Assessment of Psychic Experiences (CAPE) is a popular self-report measure of psychosis, but a cut-off score that can detect those most likely to fulfill diagnostic criteria for psychotic disorder is not established.
A case-control sample from the Genetic Risk and Outcome of Psychosis Project study (N = 1375, healthy individuals, n = 507, and individuals with a psychotic disorder, n = 868), was used to examine cut-off scores of the CAPE with receiver operating curve analyses. We examined 27 possible cut-off scores computed from a combination of scores from the frequency and distress scales of the various factors of the CAPE.
The weighted severity positive symptom dimension was most optimal in detecting individuals with a psychotic disorder (>1.75 cut-off; area under the curve = 0.88; sensitivity, 75%; specificity, 88%), which correctly identified 80% of the sample as cases or controls with a diagnostic odds ratio of 22.69.
The CAPE can be used as a first screening tool to detect individuals who are likely to fulfill criteria for a psychotic disorder. The >1.75 cut-off of the weighted severity positive symptom dimension provides a better prediction than all alternatives tested so far.
广泛认识到需要一种简短的精神病筛查工具。精神体验社区评估量表（CAPE）是一种常用的精神病自我报告测量工具，但尚未确定能够检测出最有可能符合精神病障碍诊断标准的截断分数。
使用来自精神病风险和结局研究项目（N=1375，健康个体，n=507，以及精神病个体，n=868）的病例对照样本，通过接受者操作特征曲线分析来检查 CAPE 的截断分数。我们检验了 CAPE 的频率和困扰量表的各个因子的分数组合得出的 27 个可能的截断分数。
加权严重阳性症状维度在检测精神病个体方面最具优势（>1.75 截断值；曲线下面积=0.88；敏感性为 75%，特异性为 88%），正确识别了 80%的样本为病例或对照，诊断比值比为 22.69。
CAPE 可用作首次筛查工具，以检测可能符合精神病障碍标准的个体。加权严重阳性症状维度的>1.75 截断值比迄今为止测试的所有其他替代方案提供了更好的预测。
