The foot posture index: Rasch analysis of a novel, foot-specific outcome measure
The foot posture index: Rasch analysis of a novel, foot-specific outcome measure
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DOI：
10.1016/j.apmr.2006.10.005
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发表时间：
2007-01-01
影响因子：
4.3
通讯作者：
Tennant, Alan
中科院分区：
文献类型：
--
作者：
Keenan, Anne-Maree;Redmond, Anthony C.;Tennant, Alan
目的：研究临床医师评估的足部位置测量方法--足部位置指数（FPI），FPI-8和FPI-6版本的内部结构效度。设计：Rasch分析在仪器开发过程中进行的研究的基线FPI评分。设置：一项基于社区和一项基于医院的研究，在2个机构进行。参与者：从143名参与者中获得了测量结果（98名男性，45名女性;年龄范围，8- 65岁）。干预措施：不适用。主要结果测量：使用RUMM 2020软件进行Rasch分析，以评价FPI的以下性质：FPI中每个项目的单维性、每个项目的差异项目功能（DIF）以及项目和人的分离指数。在该工具的开发草案中，8项FPI-8显示出与Rasch模型的一些不匹配（X-16（2）检验=27.63，P= 0.03），表明缺乏一维性。在Rasch模型中有两个项目被认为是有问题的：跟腱止点（Helbing征），它显示了不合理的反应顺序，以及“足部外侧缘一致性”，它显示了不匹配，表明该项目可能测量了不同的结构（X-2（2）检验= 15. 35，P
Objective: To investigate the internal construct validity of a clinician-assessed measure of foot position, the Foot Posture Index (FPI), versions FPI-8 and FPI-6.Design: Rasch analysis of baseline FPI scores from studies conducted during the development of the instrument.Setting: A community-based and a hospital-based study, conducted at 2 institutions.Participants: Measures were obtained from 143 participants (98 men, 45 women; age range, 8-65y).Interventions: Not applicable.Main Outcome Measures: Rasch analysis was undertaken using RUMM2020 software in order to evaluate the following properties of the FPI: unidimensionality of each item included in the FPI, the differential item functioning (DIF) of each item, and item and person separation indices.Results: In the developmental draft of the instrument, the 8-item FPI-8 showed some misfit to the Rasch model (X-16(2) test=27.63, P=.03), indicating lack of unidimensionality. Two items were identified as problematic in the Rasch modeling: Achilles' tendon insertion (Helbing's sign), which showed illogical response ordering and "congruence of the lateral border of the foot," which showed misfit, indicating that this item may be measuring a different construct (X-2(2) test= 15.35, P