Katz N, Itzkovich M, Averbuch S, Elazar B
School of Occupational Therapy, Hebrew University, Jerusalem, Israel.
Am J Occup Ther. 1989 Mar;43(3):184-92. doi: 10.5014/ajot.43.3.184.
The purpose of this study was to determine the reliability and validity of the Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) battery. The battery provides an initial profile of the cognitive abilities of the brain-injured patient that can be used as a starting point for occupational therapy intervention and as a screening test for further assessment. The LOTCA consists of 20 subtests and is divided into four areas: orientation, visual and spatial perception, visuomotor organization, and thinking operations. The battery takes 30 to 45 minutes to administer. Subjects in the study consisted of two patient groups (20 traumatic head injury patients and 28 cerebrovascular accident patients) and one control group (55 non-brain-injured adults). Results showed interrater reliability coefficients of .82 to .97 for the various subtests and an alpha coefficient of .85 and above for the internal consistency of the areas of perception, visuomotor organization, and thinking operations. The Wilcoxon two-sample test showed that all subtests differentiated at the .0001 level of significance between the patient groups and the control group. This supported the LOTCA's validity. Furthermore, factor analysis provided initial construct validation for three areas of the battery: perception, visuomotor organization, and thinking operations.
本研究的目的是确定洛文斯顿作业疗法认知评定量表（LOTCA）的信度和效度。该量表可为脑损伤患者的认知能力提供初步概况，可作为作业疗法干预的起点以及进一步评估的筛查测试。LOTCA由20个分测验组成，分为四个领域：定向、视觉与空间感知、视运动组织和思维操作。该量表的施测时间为30至45分钟。研究中的受试者包括两个患者组（20名创伤性脑损伤患者和28名脑血管意外患者）和一个对照组（55名非脑损伤成年人）。结果显示，各个分测验的评分者间信度系数在0.82至0.97之间，感知、视运动组织和思维操作领域的内部一致性的α系数在0.85及以上。威尔科克森两样本检验表明，所有分测验在患者组和对照组之间的显著性水平均为0.0001。这支持了LOTCA的效度。此外，因子分析为该量表的三个领域提供了初步的结构效度验证：感知、视运动组织和思维操作。
