Subramanian Indu, McDaniels Bradley, Zhou Kaiqi, Mischley Laurie K
Department of Neurology, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA; PADRECC, West Los Angeles Veterans Administration, Los Angeles, CA, USA.
Department of Rehabilitation and Health Services, University of North Texas, Denton, TX, USA.
Parkinsonism Relat Disord. 2025 Jun;135:107828. doi: 10.1016/j.parkreldis.2025.107828. Epub 2025 Apr 15.
Loneliness has recently been shown to be associated with worse motor and non-motor scores and Quality of Life (QOL) in people with Parkinson's disease (PWP), although a validated measure for use in this population has not yet been validated.
The goal of this study was to assess the factor structure and structural validity of the UCLA Loneliness Scale (ULS-8) in a sample of PWP.
The dataset was split randomly into two halves: the first for exploratory factor analysis (EFA) using bivariate correlation, the Kaiser-Meyer-Olkin (KMO) test, and Bartlett's test of sphericity, and the second for confirmatory factor analysis (CFA) to validate the factor structure identified by EFA.
Exploratory factor analysis (EFA) on the first subset of 384 subjects identified a clear two-factor structure, supported by strong KMO (.90) and Bartlett's test of sphericity (χ2 = 94.234, df = 6, p < .01) results, suggesting the data were appropriate for factor analysis. Confirmatory factor analysis (CFA) on the second subset confirmed the two-factor structure with satisfactory model fit indices, validating the structural integrity of the scale. Correlation results indicated that one item ("I am an outgoing person") should be excluded from the analysis, resulting in a 7-item instrument.
DISCUSSION/CONCLUSION: The results of this psychometric validation study confirm the reliability and preliminary validity of a revised 7-item version of the ULS-8 scale for assessing loneliness in PWP. This study provides evidence for its utility in both clinical and research settings to assess and address loneliness effectively.
最近研究表明，孤独感与帕金森病患者（PWP）较差的运动和非运动评分以及生活质量（QOL）相关，尽管尚未验证适用于该人群的有效测量方法。
本研究的目的是评估帕金森病患者样本中加州大学洛杉矶分校孤独感量表（ULS-8）的因子结构和结构效度。
将数据集随机分为两半：第一半用于使用双变量相关性、凯泽-迈耶-奥尔金（KMO）检验和巴特利特球形检验进行探索性因子分析（EFA），第二半用于验证性因子分析（CFA）以验证EFA确定的因子结构。
对384名受试者的第一个子集进行探索性因子分析（EFA），确定了一个清晰的双因子结构，KMO值较高（.90）和巴特利特球形检验（χ2 = 94.234，df = 6，p <.01）结果支持该结构，表明数据适合进行因子分析。对第二个子集进行验证性因子分析（CFA），确认了双因子结构，模型拟合指数令人满意，验证了量表的结构完整性。相关结果表明，一项（“我是一个外向的人”）应从分析中排除，从而形成一个7项量表。
讨论/结论：这项心理测量学验证研究的结果证实了修订后的7项版ULS-8量表在评估帕金森病患者孤独感方面的可靠性和初步效度。本研究为其在临床和研究环境中有效评估和解决孤独感的效用提供了证据。
