External validity study of a personality disorders screening test in a community sample

Abstract Background A screening test for personality disorders was recently developed in Brazil, the Dimensional Clinical Personality Inventory – screening version (IDCP-SV). However, no relationship between this screening measure and other scales or external criteria was tested. Objective To seek for validity evidence based on related criteria (e.g., other psychological tests) and external criteria (e.g., sample demographics). Methods Sample comprised 804 participants from São Paulo (Brazil), most female and college students, with mean age equal to 29.65 (SD = 10.73). They answered the IDCP-SV and another screening for personality disorders (IPDS), a depression measure (EBADEP-screening), a scale assessing reasoning for living (EMVIVER), and a self-report for personality disorders categories assessment (SCID-II-PQ). Results IDCP-SV identified 46.4% of community sample as positive for personality disorders. The positive group showed the great mean for almost all comparisions, including psychological tests and the demographics characteristics, including large expressive effect sizes. Discussion Data suggest that the IDCP-SV discriminates a similar percentage of people from the community to what was reported previously using other screening measures; besides, the mean comparisons between groups showed good discriminative capacity by IDCP-SV items.

摘要
研究背景 巴西近期开发了一款人格障碍筛查工具——维度化临床人格问卷筛查版（Dimensional Clinical Personality Inventory – Screening Version，IDCP-SV），但目前尚未有研究验证该筛查量表与其他测评工具或外部标准之间的关联。
研究目的 旨在基于相关标准（如其他心理测评量表）与外部标准（如样本人口学特征），为IDCP-SV提供效度验证证据。
研究方法 本研究纳入来自巴西圣保罗的804名参与者，其中多数为女性大学生，平均年龄为29.65岁（标准差SD=10.73）。所有参与者完成了以下测评：IDCP-SV、另一款人格障碍筛查工具（IPDS）、抑郁筛查量表（EBADEP-screening）、生活意义推理评估量表（EMVIVER），以及用于人格障碍类别自评的SCID-II-PQ。
研究结果 IDCP-SV筛查显示46.4%的社区样本人格障碍筛查结果为阳性；阳性组在几乎所有对比项（包括心理测评结果与人口学特征）上的平均得分均更高，且效应量较大。
讨论 本研究数据表明，IDCP-SV对社区人群的阳性筛查比例与此前其他筛查工具的报道结果相近；此外，组间均值对比结果显示，IDCP-SV的条目具备良好的区分能力。