Victorson David, Tulsky David S, Kisala Pamela A, Kalpakjian Claire Z, Weiland Brian, Choi Seung W
J Spinal Cord Med. 2015 May;38(3):366-76. doi: 10.1179/2045772315Y.0000000016.
To describe the development and psychometric properties of the Spinal Cord Injury--Quality of Life (SCI-QOL) Resilience item bank and short form.
Using a mixed-methods design, we developed and tested a resilience item bank through the use of focus groups with individuals with SCI and clinicians with expertise in SCI, cognitive interviews, and item-response theory based analytic approaches, including tests of model fit and differential item functioning (DIF).
We tested a 32-item pool at several medical institutions across the United States, including the University of Michigan, Kessler Foundation, the Rehabilitation Institute of Chicago, the University of Washington, Craig Hospital and the James J. Peters/Bronx Department of Veterans Affairs medical center.
A total of 717 individuals with SCI completed the Resilience items.
A unidimensional model was observed (CFI=0.968; RMSEA=0.074) and measurement precision was good (theta range between -3.1 and 0.9). Ten items were flagged for DIF, however, after examination of effect sizes we found this to be negligible with little practical impact on score estimates. The final calibrated item bank resulted in 21 retained items.
This study indicates that the SCI-QOL Resilience item bank represents a psychometrically robust measurement tool. Short form items are also suggested and computer adaptive tests are available.
描述脊髓损伤生活质量（SCI-QOL）复原力题库及简表的开发过程和心理测量特性。
采用混合方法设计，通过与脊髓损伤患者及脊髓损伤领域专家进行焦点小组讨论、认知访谈以及基于项目反应理论的分析方法（包括模型拟合检验和项目功能差异分析）来开发和测试复原力题库。
我们在美国的多个医疗机构对一个包含32个条目的题库进行了测试，这些机构包括密歇根大学、凯斯勒基金会、芝加哥康复研究所、华盛顿大学、克雷格医院以及詹姆斯·J·彼得斯/布朗克斯退伍军人事务部医疗中心。
共有717名脊髓损伤患者完成了复原力相关条目。
观察到一个单维模型（CFI = 0.968；RMSEA = 0.074），测量精度良好（θ范围在-3.1至0.9之间）。有10个条目被标记为存在项目功能差异，但在检查效应大小后，我们发现这一差异可忽略不计，对分数估计几乎没有实际影响。最终校准后的题库保留了21个条目。
本研究表明，SCI-QOL复原力题库是一种心理测量稳健的测量工具。还建议了简表条目，并且有计算机自适应测试可用。
