Gholizadeh S, Azizoddin D R, Mills S D, Zamora-Racaza G, Potemra H M K, Wallace D J, Weisman M H, Nicassio P M
1 SDSU/UC San Diego Joint Doctoral Program in Clinical Psychology, USA.
2 School of Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, USA.
Lupus. 2018 Oct;27(12):1980-1984. doi: 10.1177/0961203318791765. Epub 2018 Aug 15.
Objective Helplessness is a relevant construct in systemic lupus erythematosus (SLE), an unpredictable chronic illness with no known cure characterized by relapsing and remitting features. However, no measure of helplessness has been validated in this population. The present study examined the structural validity, reliability, and convergent validity of the Arthritis Helplessness Index, a measure initially developed for rheumatoid arthritis populations, in a sample of patients with SLE. Methods Patients with SLE ( N = 136) receiving medical care at a private hospital completed the Arthritis Helplessness Index and other self-report measures. The structural validity of the Arthritis Helplessness Index was examined using confirmatory factor analysis. Internal consistency reliability was evaluated with Cronbach's coefficient alpha. Pearson product-moment correlations were used to examine convergent validity with measures of depression, anxiety and mastery. Results The five-item Arthritis Helplessness Index-Helplessness measure demonstrated a tenable factor structure (comparative fit index 0.98, root mean square error of approximation 0.06, standardized root mean residual 0.04). Internal consistency reliability was fair (α = 0.69). Convergent validity was evidenced by significant correlations with measures of depression, anxiety and mastery. Conclusion The five-item Arthritis Helplessness Index-Helplessness scale can confidently be used as a measure of helplessness in SLE.
目的无助感是系统性红斑狼疮（SLE）中的一个相关概念，SLE是一种无法预测的慢性疾病，无法治愈，具有复发和缓解的特征。然而，尚未在该人群中验证无助感的测量方法。本研究在SLE患者样本中检验了关节炎无助感指数（最初为类风湿性关节炎人群开发的一种测量方法）的结构效度、信度和收敛效度。方法在一家私立医院接受医疗护理的SLE患者（N = 136）完成了关节炎无助感指数及其他自我报告测量。使用验证性因素分析检验关节炎无助感指数的结构效度。用Cronbach's α系数评估内部一致性信度。使用Pearson积差相关分析检验与抑郁、焦虑和掌控感测量方法的收敛效度。结果五项关节炎无助感指数-无助感测量显示出合理的因素结构（比较拟合指数0.98，近似均方根误差0.06，标准化根均残差0.04）。内部一致性信度尚可（α = 0.69）。与抑郁、焦虑和掌控感测量方法的显著相关性证明了收敛效度。结论五项关节炎无助感指数-无助感量表可放心用作SLE中无助感的测量方法。
