Olomouc University Social Health Institute, Palacky University in Olomouc, Univerzitni 244/22, 771 11, Olomouc, Czech Republic.
Department of Community and Occupational Medicine, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.
BMC Psychiatry. 2022 Dec 23;22(1):822. doi: 10.1186/s12888-022-04365-5.
The Overall Anxiety Severity and Impairment Scale (OASIS) is a transdiagnostic measure that assesses severity and impairment associated with anxiety disorders. However, its psychometric properties were primarily examined in English-speaking or western countries. Therefore, this study aims to examine its psychometric parameters in the Czech Republic.
A large representative sample (n = 1738), a clinical sample (n = 57) and a retest sample (n = 20) were used. In addition to the OASIS, conventional measures of anxiety, depression, personality traits, self-esteem, life satisfaction, and other scales were also administered. Moreover, we examined the latent structure, reliability, validity, and the cut-off score for the Reliable Change Index (RCI) and the Clinically Significant Change Index (CSI).
Higher anxiety was found in females, religious non-church members, and students. The Confirmatory Factor Analysis supported the adequate fit of the unidimensional solution: x2(4) = 3.20; p < 0.525; CFI = 1.000; TLI = 1.000;RMSEA = 0, SRMR = 0. The measurement equivalence examination indicated that the OASIS measures anxiety invariantly between males and females. The validity of the OASIS was supported by positive associations with neuroticism, depression, perceived stress, guilt, shame, and the established anxiety measures. The internal consistency was excellent (Cronbach's alpha = 0.96, McDonald's omega = 0.96). The test-retest reliability was acceptable (r = 0.66). The cut-off for the CSI is 6 and the RCI is 5.32.
The OASIS represents a reliable and valid instrument for assessing anxiety in adults. Due to its shortness, excellent psychometric properties, and percentile norms, it is especially useful for short and accurate screening of anxiety and mapping therapeutic changes in clinical practice.
总体焦虑严重程度和障碍量表（OASIS）是一种跨诊断的测量工具，用于评估焦虑障碍相关的严重程度和障碍。然而，其心理测量学特性主要在讲英语或西方国家进行了检验。因此，本研究旨在检验其在捷克共和国的心理测量学参数。
使用了一个大型代表性样本（n=1738）、一个临床样本（n=57）和一个重测样本（n=20）。除了 OASIS 之外，还使用了焦虑、抑郁、人格特质、自尊、生活满意度等常规测量工具和其他量表。此外，我们还检验了潜在结构、信度、效度以及可靠变化指数（RCI）和临床显著变化指数（CSI）的截断分数。
女性、非宗教非教会成员和学生的焦虑程度较高。验证性因素分析支持了单维解决方案的适当拟合：x2(4)=3.20;p<0.525;CFI=1.000;TLI=1.000;RMSEA=0,SRMR=0. 测量等效性检验表明，OASIS 对男性和女性的焦虑测量具有不变性。OASIS 的有效性得到了与神经质、抑郁、感知压力、内疚、羞耻和已建立的焦虑测量工具的积极关联的支持。内部一致性非常好（Cronbach's alpha=0.96，McDonald's omega=0.96）。重测信度可接受（r=0.66）。CSI 的截断值为 6，RCI 为 5.32。
OASIS 是一种可靠和有效的成人焦虑评估工具。由于其简短、优秀的心理测量学特性和百分位常模，它特别适用于临床实践中焦虑的快速准确筛查和治疗变化的映射。
