NORMENT and K.G. Jebsen Center for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Norway.
NORMENT and K.G. Jebsen Center for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Norway; Oslo University Hospital, Department of Personality Psychiatry, Division of Mental Health and Addiction, Oslo, Norway.
Psychiatry Res. 2019 Feb;272:715-722. doi: 10.1016/j.psychres.2018.12.072. Epub 2018 Dec 13.
The aim of this study is to investigate the validity of the Norwegian version of the Insight Scale (IS) in large and representative samples of patients with schizophrenia spectrum disorders, bipolar I disorder and bipolar II disorder. A total of 997 participants were included (schizophrenia spectrum disorders: 557; bipolar I disorder: 282; bipolar II disorder: 138). Confirmatory factor analysis was conducted to investigate the construct validity and bivariate correlational analysis was applied to investigate convergent validity. Confirmatory factor analyses indicated a reasonable model fit to the original three-factor subscale structure of the IS in all three diagnostic groups. The IS total score and its subscales correlated significantly with both the insight items in the Young Mania Rating Scale and the Positive and Negative Syndrome Scale in both schizophrenia spectrum disorders and bipolar I disorder. In the bipolar II disorder group, however, the IS subscales correlated poorly with both the observer-rated measures. Our study supports the construct validity of the IS in both schizophrenia spectrum disorder- and bipolar disorder populations. The study also demonstrates that patients' self-reports of insight correspond to observer-based single item ratings of insight in bipolar I disorder and schizophrenia spectrum disorders.
本研究旨在探讨挪威版洞察力量表（IS）在精神分裂症谱系障碍、双相情感障碍 I 型和双相情感障碍 II 型大样本和代表性患者中的有效性。共有 997 名参与者被纳入（精神分裂症谱系障碍：557 名；双相情感障碍 I 型：282 名；双相情感障碍 II 型：138 名）。进行验证性因子分析以调查结构效度，采用双变量相关分析以调查聚合效度。验证性因子分析表明，在所有三种诊断组中，IS 的原始三因素分量表结构都具有合理的模型拟合度。IS 总分及其分量表与精神分裂症谱系障碍和双相情感障碍 I 型的 Young 躁狂评定量表中的洞察力项目以及阳性和阴性综合征量表显著相关。然而，在双相情感障碍 II 型组中，IS 分量表与观察者评定的测量结果相关性较差。我们的研究支持 IS 在精神分裂症谱系障碍和双相障碍人群中的结构效度。该研究还表明，患者对洞察力的自我报告与双相情感障碍 I 型和精神分裂症谱系障碍中基于观察者的单一洞察力评定项目相对应。
