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首页> 外文期刊>Foot and ankle international >Validation of the Ankle Osteoarthritis Scale Instrument for Preoperative Evaluation of End-Stage Ankle Arthritis Patients Using Item Response Theory
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Validation of the Ankle Osteoarthritis Scale Instrument for Preoperative Evaluation of End-Stage Ankle Arthritis Patients Using Item Response Theory

机译：用物品响应理论验证术前术踝关节炎患者术前评价的术前评价

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Background: Significant ankle arthritis results in functional limitations and patient morbidity. There is a need to measure symptoms and the impact of interventions on patient's quality of life using valid and reliable patient-reported measurement instruments. The objective of this research was to validate the Ankle Osteoarthritis Scale instrument in the preoperative setting using factor analysis, item response theory, and differential item function methods. Methods: This research is based on secondary analysis of patients scheduled for ankle arthrodesis or total ankle replacement in Vancouver, Canada. Participants completed the instrument between September 2014 and August 2017. Item response theory was used to estimate item difficulty and discrimination parameters, controlling for study participants' underlying level of ankle function. Differential item function was examined for sex, age group, and surgery. There were 88 participants. Results: Modification indices suggested that item 10, "walking around the house," would better fit the pain domain rather than the disability domain. Items in the pain domain displayed a range of discrimination and difficulty. Items in the disability domain exhibited a range of discrimination, though the disability domain had low difficulty. Differential item functioning for sex, age group, and ankle arthrodesis or total ankle replacement appeared to be ignorable. Conclusion: This evaluation of the Ankle Osteoarthritis Scale found the instrument to be a strong measure of the effect of pain and dysfunction among patients with end-stage ankle arthritis, even when removing items 7 and 8, supporting its prior use in numerous clinical studies.
机译：背景：显着的踝关节炎导致功能局限性和患者发病率。需要测量症状和干预措施对患者使用有效和可靠的患者报告的测量仪器的患者的生活质量的影响。本研究的目的是使用因子分析，项目响应理论和差分项目函数方法在术前设定中验证踝骨关节炎尺度仪器。方法：该研究基于加拿大温哥华踝关节关节或踝关节贴搏的患者的次要分析。参与者在2014年9月和2017年8月之间完成了仪器。项目响应理论用于估算项目难度和歧视参数，控制参与者的踝关节级潜在水平。检查差分项目功能是否适用于性别，年龄组和手术。有88名参与者。结果：修改指数建议，第10项“在房子周围行走”，将更好地适合痛苦领域而不是残疾域。疼痛域中的项目显示了一系列歧视和困难。残疾域中的项目呈现了一系列歧视，但残疾域难度较低。性别，年龄组和脚踝关节的差分项目似乎是无知的。结论：这种对踝关节骨关节炎的评估发现，即使在除去物品7和8时，患者患者疼痛和功能障碍患者疼痛和功能障碍的效果的强烈衡量标准也是一种强烈的衡量标准，即使在删除物品7和8中，支持其在许多临床研究中的目前使用。

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