McDaniels Bradley, Lee Chun-Lung, Bishop Malachy
Department of Rehabilitation and Health Services, University of North Texas, Denton, TX, USA.
College of Law, University of North Texas, Dallas, TX, USA.
J Parkinsons Dis. 2022;12(1):221-228. doi: 10.3233/JPD-212772.
Positive personality resources have demonstrated the ability to positively impact health outcomes.
To examine the psychometric properties of the original Psychological Capital Questionnaire (PCQ-24) in patients with Parkinson's disease (PD).
A sample of 114 individuals with PD completed the PCQ-24, and via a latent factor modeling framework exploratory and confirmatory factor analyses were conducted to evaluate the psychometric properties in people with PD.
Exploratory factor analysis (EFA) revealed that both the efficacy and hope scales were reliable (Cronbach's alpha = 0.87 and 0.86, respectively) and had statistically acceptable validity with strong factor loadings all above the practical threshold of 0.60. The resilience and optimism scales were also reliable (Cronbach's alpha = 0.78 and 0.73, respectively) but had only moderately acceptable validity in part due to three reverse-scored items (i.e., No. 13, 20, & 23) with weak factor loadings of 0.26, 0.46, and 0.50, respectively. After excluding these at-risk items, the overall factor loadings for resilience and optimism were significantly improved at the acceptable above 0.60. The CFA results confirm a statistically acceptable model fit for the modified version (only 21-items) of the PCQ in the PD sample.
Both EFA and CFA analyses provide statistical evidence supporting the modified PCQ version and demonstrate better test validity and reliability for the PD population. The refined PCQ form is both effectively shorter and psychometrically superior to the original and has promise in investigating health outcomes in people with PD.
积极的人格资源已被证明有能力对健康结果产生积极影响。
检验帕金森病（PD）患者中原始心理资本问卷（PCQ - 24）的心理测量特性。
114名PD患者完成了PCQ - 24，并通过潜在因子建模框架进行探索性和验证性因子分析，以评估PD患者的心理测量特性。
探索性因子分析（EFA）显示，效能感和希望量表均可靠（Cronbach's α分别为0.87和0.86），且具有统计学上可接受的效度，所有因子载荷均高于实际阈值0.60。复原力和乐观主义量表也可靠（Cronbach's α分别为0.78和0.73），但效度仅为中等可接受，部分原因是三个反向计分项目（即第13、20和23项）的因子载荷较弱，分别为0.26、0.46和0.50。排除这些有风险的项目后，复原力和乐观主义的总体因子载荷在可接受水平（高于0.60）上显著提高。验证性因子分析（CFA）结果证实，PD样本中PCQ修改版（仅21项）的模型拟合在统计学上可接受。
EFA和CFA分析均提供了支持PCQ修改版的统计证据，并证明其对PD人群具有更好的测试效度和信度。改进后的PCQ形式不仅有效缩短了问卷长度，而且在心理测量上优于原始版本，有望用于研究PD患者的健康结果。
