Department of Physiotherapy, Haukeland University Hospital, Bergen, Norway.
Disabil Rehabil. 2012;34(16):1385-95. doi: 10.3109/09638288.2011.645113. Epub 2011 Dec 23.
To translate the Trunk Impairment Scale (TIS), a measure of trunk control in patients after stroke, into Norwegian (TIS-NV), and to explore its construct validity, internal consistency, intertester and test-retest reliability.
TIS was translated according to international guidelines. The validity study was performed on data from 201 patients with acute stroke. Fifty patients with stroke and acquired brain injury were recruited to examine intertester and test-retest reliability. Construct validity was analyzed with exploratory and confirmatory factor analysis and item response theory, internal consistency with Cronbach's alpha test, and intertester and test-retest reliability with kappa and intraclass correlation coefficient tests.
The back-translated version of TIS-NV was validated by the original developer. The subscale Static sitting balance was removed. By combining items from the subscales Dynamic sitting balance and Coordination, six ordinal superitems (testlets) were constructed. The TIS-NV was renamed the modified TIS-NV (TIS-modNV). After modifications the TIS-modNV fitted well to a locally dependent unidimensional item response theory model. It demonstrated good construct validity, excellent internal consistency, and high intertester and test-retest reliability for the total score.
This study supports that the TIS-modNV is a valid and reliable scale for use in clinical practice and research.
将用于评估脑卒中后患者躯干控制能力的 Trunk Impairment Scale（TIS）翻译成挪威语（TIS-NV），并探讨其结构效度、内部一致性、测评者间信度和重测信度。
根据国际指南对 TIS 进行翻译。有效性研究的数据来自 201 例急性脑卒中患者。另外招募了 50 例脑卒中伴获得性脑损伤患者来评估测评者间信度和重测信度。采用探索性和验证性因子分析以及项目反应理论分析结构效度，采用 Cronbach's alpha 检验分析内部一致性，采用 Kappa 和组内相关系数检验分析测评者间信度和重测信度。
TIS-NV 的回译版本由原开发者进行了验证。子量表静态坐位平衡被删除。通过将子量表动态坐位平衡和协调的项目合并，构建了 6 个有序超项目（测验组合）。将 TIS-NV 更名为改良 TIS-NV（TIS-modNV）。经过修改，TIS-modNV 很好地符合局部依赖的单维项目反应理论模型。它显示出良好的结构效度、优秀的内部一致性，以及总分的高测评者间信度和重测信度。
本研究支持 TIS-modNV 是一种在临床实践和研究中有效且可靠的量表。
