Patterns of eligibility criteria

The file contains a set of patterns that frequently occur in eligibility criteria of clinical trials. Each pattern has associated regular expressions which can be used to detect them. The patterns are classified according to several dimensions: - time independent status (present, absent, conditional) - temporal status (prior, current, planned) - specification type The patterns were initially described in [1]. The evaluation of the algoritm which detects patterns using given regular expressions is described in [2]. To see examples of instantiated patterns check [3]

本数据集文件收录了一组频繁出现于临床试验入排标准中的模式。每一类模式均配有对应的正则表达式（Regular Expression），可用于识别此类模式。该类模式按多个维度进行分类：
- 时间无关状态（存在、不存在、有条件）
- 时间相关状态（先前、当前、计划中）
- 规范类型
此类模式最初于文献[1]中被提出。基于给定正则表达式识别模式的算法的评估方法详见文献[2]。若需查看实例化模式的示例，请参阅文献[3]。