Stein M J, Wallston K A, Nicassio P M
Health Care Research Project, School of Nursing, Vanderbilt University, Nashville, TN 37240.
J Rheumatol. 1988 Mar;15(3):427-32.
The factor structure of the Arthritis Helplessness Index (AHI) was examined using principal components factor analysis with varimax rotation. Data for the initial factor analysis came from a longitudinal study of 368 patients with rheumatoid arthritis (RA). Two slightly negatively correlated (r = -0.21) subscales emerged: internality and helplessness. This analysis was cross-validated twice. Findings reveal that the 2 subscales of the AHI are more reliable and valid than the total score. The 5 item helplessness subscale, in particular, appears to be a highly valid indicator of the degree to which patients with RA feel overwhelmed by their disease.
使用主成分因子分析和方差最大化旋转法对关节炎无助感指数（AHI）的因子结构进行了检验。初始因子分析的数据来自对368名类风湿性关节炎（RA）患者的纵向研究。出现了两个略有负相关（r = -0.21）的分量表：内控性和无助感。该分析进行了两次交叉验证。研究结果表明，AHI的两个分量表比总分更可靠、更有效。特别是，由5个项目组成的无助感分量表似乎是RA患者被疾病压垮程度的一个高度有效的指标。
