A practical method for transforming free-text eligibility criteria into computable criteria.

A practical method for transforming free-text eligibility criteria into computable criteria.
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DOI:
10.1016/j.jbi.2010.09.007
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发表时间:
2011-04
影响因子:
4.5
通讯作者:
Sim I
Sim I
中科院分区:
医学3区
文献类型:
--
作者:
Tu SW;Peleg M;Carini S;Bobak M;Ross J;Rubin D;Sim I

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以计算机可解释的语言正式确定合格性标准将有助于确定研究受试者的合格性,并确定对类似患者人群的研究。由于这种形式化是非常劳动密集型的,我们转换的问题,从一个完全捕捉的语义标准直接在一个正式的表达语言的注释自由文本标准的格式称为ERGO注释。注释可以手动完成,也可以使用自然语言处理技术部分自动化。我们从三个方面评估了我们的方法。首先,我们评估了ERGO注释捕获从ClinicalTrials.gov随机抽取的1000个资格标准的语义的程度。其次,我们在可行性研究中证明了注释过程的实用性。最后,我们证明了ERGO注释的可计算性,通过使用它来(1)构建合格标准库,(2)搜索招募指定研究人群的研究,以及(3)筛选患者的潜在合格性。因此,我们展示了一个新的和实用的方法,逐步捕获的语义自由文本的资格标准到可计算的形式。
Formalizing eligibility criteria in a computer-interpretable language would facilitate eligibility determination for study subjects and the identification of studies on similar patient populations. Because such formalization is extremely labor intensive, we transform the problem from one of fully capturing the semantics of criteria directly in a formal expression language to one of annotating free-text criteria in a format called ERGO Annotation. The annotation can be done manually, or it can be partially automated using natural-language processing techniques. We evaluated our approach in three ways. First, we assessed the extent to which ERGO Annotations capture the semantics of 1000 eligibility criteria randomly drawn from ClinicalTrials.gov. Second, we demonstrated the practicality of the annotation process in a feasibility study. Finally, we demonstrate the computability of ERGO Annotation by using it to (1) structure a library of eligibility criteria, (2) search for studies enrolling specified study populations, and (3) screen patients for potential eligibility for a study. We therefore demonstrate a new and practical method for incrementally capturing the semantics of free-text eligibility criteria into computable form.
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