使用R/Knitr/Rstudio中的表包进行乳胶表内的测试统计(例如chisquare测试)

Question

我想使用tables-package中的tabular()函数对两个变量(例如v1和v2)进行交叉制表,并在表中显示chisq-test的p值.很容易得到交叉制表,但我不能得到表内的p值.这是我一直在尝试的,没有任何运气:

\documentclass{article}

\begin{document}

<<echo=TRUE,message=FALSE>>=
library(Hmisc)
library(tables)
v1 <- sample(letters[1:2],200,replace=TRUE)
v2 <- sample(month.name[1:3],200,replace=TRUE)
df <- data.frame(v1,v2)
@

It is straight forward to get the crosstabulation:
<<results='asis'>>=
latex(   tabular(    Factor(v1)   ~   Factor(v2)      , data=df)  )
@

But I cant get the p-value inside the table:

<<results='asis'>>=
latex(   tabular(    Factor(v1)*chisq.test(v1,v2)$p.value   ~   Factor(v2)      , data=df)  )
@

\end{document}

Answer 1

我不知道该怎么做tables::tabular但是Hmisc::summary.formula.reverse假设你的系统配置为通过latex()生成pdf文件,这样就可以了.我不得不搜索Rhelp档案,以确定"exclude1"参数需要进入latex参数列表.一旦你回过头exclude1来看文档确实出现在用法示例中,latex.summary.formula.reverse虽然我以为我正在阅读帮助页面summary.rms:

library(Hmisc)
latex(summary( v2 ~ v1, data=df,  method="reverse" ,test=TRUE), exclude1=FALSE)

如果要通过将输出分配给指定文件来将其嵌入到更长的文档中,则可以"沿途"拦截乳胶输出.

latex(summary( v2 ~ v1, data=df,  method="reverse" ,test=TRUE), exclude1=FALSE, file="")
#--------
% latex.default(cstats, title = title, caption = caption, rowlabel = rowlabel,      col.just = col.just, numeric.dollar = FALSE, insert.bottom = legend,      rowname = lab, dcolumn = dcolumn, extracolheads = extracolheads,      extracolsize = Nsize, ...) 
%
\begin{table}[!tbp]
\caption{Descriptive Statistics by v2\label{summary}} 
\begin{center}
\begin{tabular}{lcccc}
\hline\hline
\multicolumn{1}{l}{}&\multicolumn{1}{c}{February}&\multicolumn{1}{c}{January}&\multicolumn{1}{c}{March}&\multicolumn{1}{c}{Test Statistic}\tabularnewline
&\multicolumn{1}{c}{{\scriptsize $N=56$}}&\multicolumn{1}{c}{{\scriptsize $N=73$}}&\multicolumn{1}{c}{{\scriptsize $N=71$}}&\tabularnewline
\hline
v1~:~a&43\%~{\scriptsize~(24)}&47\%~{\scriptsize~(34)}&44\%~{\scriptsize~(31)}&$ \chi^{2}_{2}=0.21 ,~ P=0.901  $\tabularnewline
~~~~b&57\%~{\scriptsize~(32)}&53\%~{\scriptsize~(39)}&56\%~{\scriptsize~(40)}&\tabularnewline
\hline
\end{tabular}
\end{center}
Numbers after percents are frequencies.\\\noindent Test used:\\Pearson test\end{table}