利用文中数据识别统计学错误

Identification of statistical errors using data in the papers

利用医学论文中的数据,举例说明下列统计学问题:绝对数或相对数计算错误,P值计算错误,误用t检验处理定性资料,用x±s描述偏态分布资料。分析出现这些问题的原因,并就如何避免给出建议。

This paper lists and analyzes some statistical errors in medical papers using the data in the text：errors in calculating absolute and relative measures,error in calculating P-value,analysis of qualitative data using t test,and description of skewness distribution using x±s.The reasons causing these errors are analyzed,and some suggestions are given on how to avoid these errors.