背景:临床见解(即,对疾病的洞察力受损)被科学界日益认识到是精神分裂症一系列心理和临床结果的重要原因。因此,它的评估使用可靠的,快速,简单和经济的工具是重要的临床实践。这项研究建议调查阿拉伯语慢性精神分裂症患者的BirchwoodInsightScale(BIS)阿拉伯语翻译的心理测量特性。我们的目标是在文献中先前提出的几种测量模型中确定BIS的最适当的因素结构,验证性别群体之间BIS的可靠性和测量不变性,并通过检查BIS与精神病症状的相关性模式来探索BIS的并发有效性。
方法:一百一十七个讲阿拉伯语的慢性,缓解精神分裂症患者参加了这项研究。向参与者施用BIS和阳性和阴性综合征量表(PANSS)的阿拉伯语翻译版本。
结果:验证性因素分析(CFA)显示,在省略两个低负荷项目(项目1和2)后,BIS的一维因子模型显示出良好的拟合指数,可靠性为α=0.68和ω=0.68。然而,分析未能显示出适合全长的一个,two-,以及阿拉伯文版本的BIS三因素模型。在结构上,男性和女性之间建立了阿拉伯6项单因素BIS的测量不变性,度量和标量水平;就BIS评分而言,男性和女性之间没有统计学上的显着差异。最后,BIS得分与我们样本中的PANSS得分显著相关,从而证明了足够的并发有效性。
结论:这项研究基于非西方文化环境中对精神分裂症的CFA和其他分析结果,提供了有关BIS的有价值的其他心理测量信息。我们认为,在阿拉伯语中提供BIS可能会使与讲阿拉伯语的精神分裂症患者一起工作的临床医生受益,开辟新的研究途径,更好地了解临床洞察力的性质及其与精神病理学的相关性。
BACKGROUND: Clinical insight (i.e., impaired insight into illness) is increasingly recognized by the scientific community as a significant contributor to an array of psychological and clinical outcomes in schizophrenia. Therefore, its assessment using a reliable, rapid, easy and economic tool is important for clinical practice. This study proposes to investigate the psychometric properties of an Arabic translation of the Birchwood Insight Scale (
BIS) in Arabic-speaking chronic patients with schizophrenia. Our objectives were to identify the most adequate factor structure of the BIS among the several measurement models previously proposed in the literature, verify the reliability and measurement invariance of the BIS across sex groups, and explore the concurrent validity of the
BIS through examining its patterns of correlations with psychotic symptoms.
METHODS: One hundred seventeen Arabic-speaking chronic, remitted patients with schizophrenia took part in this study. An Arabic translated version of the BIS and the Positive and Negative Syndrome Scale (PANSS) were administered to participants.
RESULTS: Confirmatory factor analyses (CFA) showed that, after omitting two items with low loadings (items 1 and 2), the unidimensional factor model of the BIS showed good fit indices and a reliability of α = 0.68 and ω = 0.68. However, analyses failed to show good fit for the full-length one-, two-, and three-factor models of the BIS in its Arabic version. Measurement invariance of the Arabic 6-item one-factor
BIS was established between males and females at the configural, metric and scalar levels; no statistically significant difference between males and females was found in terms of BIS scores. Finally,
BIS scores correlated significantly with the PANSS scores in our sample, thus demonstrating adequate concurrent validity.
CONCLUSIONS: This study offers valuable additional psychometric information about the
BIS based on results of CFA and other analyses in schizophrenia from a non-Western cultural environment. We believe that making the BIS available in Arabic might benefit clinicians working with Arabic-speaking patients with schizophrenia, open new avenues of research and gain a better knowledge into the nature of clinical insight and its relevance to psychopathology.