Gallagher Pamela, Horgan Olga, Franchignoni Franco, Giordano Andrea, MacLachlan Malcolm
School of Nursing, Dublin City University, Dublin, Ireland.
Am J Phys Med Rehabil. 2007 Mar;86(3):205-15. doi: 10.1097/PHM.0b013e3180321439.
The aim of this study was to examine the psychometric properties of the Amputee Body Image Scale (ABIS) through Rasch analysis, investigating the quality of its rating categories and its reliability and validity.
The ABIS (20 items; ratings of 1-5) and Trinity Amputation Prosthesis Experience Scales (TAPES) were administered by post and completed by 145 people with a lower-limb amputation and currently wearing a prosthesis.
According to Rasch analysis and expert review, some response categories were collapsed and six items were deleted. The remaining 14 items created a revised ABIS (ABIS-R) rated with a three-level rating scale. ABIS-R fitted the unidimensional construct that the scale was intended to measure and demonstrated good reliability (Cronbach's alpha and person separation reliability = 0.87), targeting, and internal construct validity. Moreover, the correlations with the nine TAPES subscales (in particular, r = -0.54 with the general adjustment, r = -0.43 with the social activity restriction, and r = -0.40 with social adjustment) supported the convergent validity of ABIS-R.
The 14-item ABIS-R demonstrates good psychometric characteristics for measuring body image disturbances in people with lower-limb amputation. These preliminary results suggest the general adequacy of the new instrument and provide a good foundation on which further validation and psychometric studies of the ABIS-R can be conducted.
本研究旨在通过拉施分析检验截肢者身体意象量表（ABIS）的心理测量特性，考察其评分类别质量及其信度和效度。
通过邮寄方式发放ABIS（20个条目；评分范围为1至5）和三一截肢与假肢体验量表（TAPES），由145名下肢截肢且目前佩戴假肢的患者完成。
根据拉施分析和专家评审，合并了一些反应类别，删除了6个条目。其余14个条目构成了修订后的ABIS（ABIS-R），采用三级评分量表。ABIS-R符合该量表旨在测量的单维结构，具有良好的信度（克朗巴哈α系数和个人分离信度=0.87）、针对性和内部结构效度。此外，与TAPES的九个分量表的相关性（特别是与总体调整的r=-0.54、与社会活动限制的r=-0.43以及与社会调整的r=-0.40）支持了ABIS-R的收敛效度。
14个条目的ABIS-R在测量下肢截肢者的身体意象障碍方面具有良好的心理测量特性。这些初步结果表明新工具总体上是合适的，并为进一步对ABIS-R进行验证和心理测量研究奠定了良好基础。
