摘要
目的分析西安交通大学医学专业本科生“生物统计学”期末考试成绩,评估课程教学质量,为改善课程安排和提高教学效果提供依据。方法以西安交通大学2022年参加“生物统计学”课程的医学专业本科生期末考试成绩为例,采用三参数logistic模型进行参数估计,计算分析试题区分度、难度系数和猜测系数等指标。结果研究中7个班级共942名学生完成了期末考试,所有班级客观题和主观题区分度系数均大于0.4,可以拉开不同水平应试者分数的距离。除6班的较低以外,其他各班客观题难度系数相对集中。客观题的猜测系数均值为0.065,主观题猜测系数均值为0.070,客观题涉及知识点比较广,猜测系数分布波动较大,可能提供总体教学质量好坏的信息。结论生物统计学试题整体设计合理、难易适中、覆盖面广,为教学提供了重要的反馈信息,也为提高教学质量提供参考依据。
Objective To analyze the scores of the final examination of Biostatistics for medical undergraduates from Xi’an Jiaotong University so as to evaluate the teaching quality and provide the basis for improving the course arrangement and teaching effects.Methods Taking the final examination scores of the course Biostatistics for medical undergraduates in Xi’an Jiaotong University in 2022 as a case study,we used the three-parameter logistic model to estimate the parameters including test item differentiation,difficulty coef⁃ficients and guess coefficient.Results A total of 942 students from seven classes took the final examination,and the differentiation coefficients of objective and subjective questions in all classes were greater than 0.4,which could widen the gap between the scores of the test takers at different levels,indicating that the overall quality of the test questions was good.The difficulty coefficients of objective questions were relatively concentrated in all classes except the lower ones in Class 6.The average guess coefficient of objective ques⁃tions and subjective questions was 0.065 and 0.070,respectively.The objective questions covered a wide range of knowledge points,resulting in a large difference in students’answer results.Therefore,the guess coefficient of objective questions might reflect the overall teaching quality.Conclusion The test questions in the final examination have reasonable overall design,moderate difficulty,and good differentiation,which can provide important feedback information for teachers and serve as reference for improving the teaching quality in the later stage.
作者
裴磊磊
赵亚玲
康轶君
朱永生
PEI Leilei;ZHAO Yaling;KANG Yijun;ZHU Yongsheng(School of Public Health,Xi’an Jiaotong University Health Science Center,Xi’an 710061;School of Forensic Medicine,Xi’an Jiaotong University Health Science Center,Xi’an 710061,China)
出处
《医学教育研究与实践》
2025年第1期87-92,共6页
Medical Education Research and Practice
关键词
项目反应理论
期末考试
生物统计学
医学生
教学方法
Item Response Theory
Final examination
Biostatistics
Medical student
Teaching method
