大选择检验报错不知道如何处理类字符对象?
我在R上做最大选择检验时用了如下语句
max_No.OR<-maxstat.test(formula = No.OR ~ Age+FSH+LH+T+Infertilitytypes+LDL,data = "Possion_No.OR",na.omit(Possion_No.OR),smethod="LogRank",pmethod="none")
但R一直报错Error in maxstat.test.default(formula = No.OR ~ Age + FSH + LH + T + Infertilitytypes + : Do not know how to handle objects of class character
我的数据格式是dataframe,No.OR,Age,FSH,LH,T,Infertilitytypes,LDL几个变量也都是数值型,刚开始学习R,很多问题实在搞不懂,想请教大家这可能是什么问题呀


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