Faculdade de Psicologia, Universidade de Lisboa, Alameda da Universidade, Lisboa, Portugal.
CICPSI, Faculdade de Psicologia, Universidade de Lisboa, Alameda da Universidade, Lisboa, Portugal.
PLoS One. 2024 Jun 27;19(6):e0300706. doi: 10.1371/journal.pone.0300706. eCollection 2024.
The Level of Personality Functioning Scale-Self-Report (LPFS-SR) operationalizes Criterion A of the DSM-5 Alternative Model for Personality Disorders. The current study aimed 1) to examine the internal consistency of the Portuguese version of the LPFS-SR in a community sample and a clinical sample, 2) to compare non-clinical participants (N = 282, Mage = 48.01, SD = 10.87) with two samples of clinical participants, one composed of patients with a personality disorder diagnosis (PD sample, n = 40, Mage = 46.18, SD = 13.59) and the other of patients with other psychiatric diagnoses (OD sample, n = 148, Mage = 49.49, SD = 11.88), with respect to LPFS-SR dimensions and total score, 3) to examine the capacity of the LPFS-SR to discriminate between samples through the ROC curve analyses, and 4) to examine the factor structure of the Portuguese version of the LPFS-SR. The Portuguese version of the LPFS-SR revealed adequate internal consistency results, akin to the original data, in the community and clinical samples. The community sample differed significantly from both clinical samples in all the LPFS-SR dimensions and total score. The ROC curve analysis indicated an optimal cut-off for the total score of 272.00, corresponding to a sensitivity of 75% and a specificity of 89%, in the PD vs. community samples. The LPFS-SR total score discriminative capacity between the PD and OD samples was lower, albeit also significant (area-under-the-curve of .63; p = .027; 95% CI: .52-.74). The current study provided evidence of the LPFS-SR's unidimensionality in both community and clinical samples. Although this study has limitations, its findings contribute to a deeper understanding of the LPFS-SR construct, as well as to its cross-cultural validation.
人格功能量表-自我报告（LPFS-SR）将 DSM-5 人格障碍替代模型的标准 A 操作化。本研究旨在：1）检验 LPFS-SR 葡萄牙版本在社区样本和临床样本中的内部一致性；2）比较非临床参与者（N=282，Mage=48.01，SD=10.87）与两个临床参与者样本，一个由人格障碍诊断患者组成（PD 样本，n=40，Mage=46.18，SD=13.59），另一个由其他精神科诊断患者组成（OD 样本，n=148，Mage=49.49，SD=11.88），比较 LPFS-SR 维度和总分；3）通过 ROC 曲线分析检验 LPFS-SR 区分样本的能力；4）检验 LPFS-SR 葡萄牙版本的因子结构。LPFS-SR 葡萄牙版本在社区和临床样本中显示出与原始数据相当的适度内部一致性。社区样本在所有 LPFS-SR 维度和总分上与两个临床样本均有显著差异。ROC 曲线分析表明，PD 与社区样本的最佳总分截断值为 272.00，其敏感性为 75%，特异性为 89%。LPFS-SR 在 PD 与 OD 样本之间的总分判别能力虽然较低，但仍有显著差异（曲线下面积为.63；p=.027；95%CI：.52-.74）。本研究在社区和临床样本中均提供了 LPFS-SR 单一维度的证据。尽管本研究存在局限性，但它的发现有助于更深入地理解 LPFS-SR 结构及其跨文化验证。
