医学稿件中常见统计学方法误用辨析

摘要

目的:提高医学科研工作者对医学资料常用统计学方法的认识和应用能力.方法:对医学原始稿件中常见的一般χ2替代四格表确切概率法、配对χ2检验和校正χ2检验,用χ2检验替代秩和检验(uc、Hc)和处理相关性分析,两两t检验替代方差分析和q检验,t检验替代配对t检验的误用进行辨析.结果:误用χ2检验主要是未结合实际情况和统计分析的目的来正确选用统计学方法;误用t检验主要是未充分理解研究资料是否满足参数检验的条件,以及不能正确判断计量资料所对应的实验设计类型.结论:医学科研工作者应进一步学习和掌握最基本统计学分析方法的概念和经典统计学方法的使用要求.%Objective:To investigate the teacher-oriented anxiety among college students. Methods:A total of 1 079 college students and 100 teachers selected from four universities were inquired by Self-Rating Anxiety Scale (SAS) and a self-designed questionnaire.Results: The anxiety score of the college students was higher than that of normal people ( P ＜ 0.05 ). The general anxiety rate of the students was 12.42％. One hundred and thirty-four students demonstrated anxiety,126 of whom were in a mild state and 8 were in a moderate to severe state. About students and teachers considered that the incidence of students' anxiety was closely correlated with teachers' improper teaching concept and performance as well as their lack of mental health knowledge. Conclusions:The prevalence of anxiety is rather high among college students,which is mainly induced by teachers' improper teaching concept and behavior as well as their lack of mental health knowledge. It is suggested that more attention should be paid to the teacher-oriented anxiety in college students'.