在临床前医学教育中使用项目难度和歧视指数检测有缺陷的多选题:一项为期六年的分析
Varanya Srisomsak1,2, Chantacha Sitticharoon3, Issarawan Keadkraichaiwat1
1Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Rd., Siriraj, Bangkok Noi, Bangkok, Thailand, 10700.
BMC medical education
|December 2, 2025
概括
对项目难度 (p值) 和点对应关系 (rpb值) 的静态值错过了14.3%的有缺陷的多项选择题,显示这些指标单独不足以确保考试质量.
科学领域:
- 教育测量教育的测量
- 心理测量 心理测量 心理测量
- 医学教育 医学教育
背景情况:
- 多选题 (MCQ) 可能包含有缺陷的项目,从而损害了考试的有效性.
- 心理测量指标,如项目难度 (p值) 和点-双序列相关性 (rpb值),用于识别有问题的MCQ.
- 关于静态p值 (<0.25) 和rpb值 (<0) 值用于检测有缺陷的项目有效性的证据有限.
研究的目的:
- 评估静态心理测量值在识别有缺陷的MCQ项目的有效性.
- 为了确定错过有缺陷项目的速度,仅依赖预定义的p值和rpb值截止值.
- 通过使用临床前医学课程的大型现实数据集提供概念验证.
主要方法:
- 分析了涵盖2017-2022学年32个临床前课程的考试数据.
- 项目根据预定义的p值和rpb值值进行标记.
- 对于没有键入正确答案或类似的p值的项目,进行了手动审查,随后由课程主任进行验证.
主要成果:
- 在14238个项目中,有81个 (0.6%) 项目需要纠正,主要是由于"多个答案" (46.9%) 和"错误答案" (40.7%) 问题.
- 静态值未能检测到14.3%的纠正项目 (共77项中的11项).
- 与未经纠正的项目相比,经纠正的项目表现出明显较低的p值和rpb值 (P < 0.001).
结论:
- 静态的p值和/或rpb值值不足以全面识别有缺陷的MCQ项目,在本研究中缺少14.3%.
- 建议将定量心理测量指数与专家审查相结合,以进行可靠的考试评估.
- 与工作负载平衡检测准确性需要仔细考虑,可能通过标记与分心器类似的p值的项目.
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