R Aligning table content to decimal points in kable - r

Question

I've created a table in RMarkdwon (PDF) with the knitr and kableExtra packages.
I can choose in the kable-function between left,center or right- alignments.
But I want that the content of the table cells are aligned to the decimal points.
In this case it is difficult since there are asterisks behind the numbers indicating the significance.
Here is a reproduceable example:
library(tidyverse)
library(knitr)
library(kableExtra)
tribble(
~Variable_1,~Variable_2,
"13.5","4.4**",
"12.7***","1.2*",
"0.4","0.3***",
"2.3**","11.5**"
)%>%
kable(format = "latex", booktabs=T, escape = T)%>%
kable_styling(position = "center", latex_options = "hold_position")
Which produces this table:
Can someone give me an easy solution directly in R?
If this should not be possible, how would an edit in the latex code look like?
Many thanks in advance!
Here is the table provided by bttomio:
One solution could be intersing the variable names in {} recommended by https://haozhu233.github.io/kableExtra/awesome_table_in_pdf.pdf page 28.
The code then looks like this:
tribble(
~Variable_1,~Variable_2,
"13.5","4.4**",
"12.7***","1.2*",
"0.4","0.3***",
"2.3**","11.5**"
)%>%
rename_all( ~ str_c("{ ",.," }"))%>%
kable(format = "latex", booktabs=T, escape = T)%>%
kable_styling(position = "center", latex_options = "hold_position")
And the table corresponds to the desired output:
But the problem is the full-width-option in the kable_styling-function. If I set this option to TRUE the linebreak of large column names disappears.

Answer 1

Here is a first try:
---
output: pdf_document
header-includes:
- '\usepackage{siunitx}'
- '\newcolumntype{d}{S[table-format=3.2]}'
---
```{r}
library(tidyverse)
library(knitr)
library(kableExtra)
tribble(
~Variable_1,~Variable_2,
"13.5","4.4**",
"12.7***","1.2*",
"0.4","0.3***",
"2.3**","11.5**"
)%>%
kable(format = "latex", booktabs=T, escape = T, align = "d")%>%
kable_styling(position = "center", latex_options = "hold_position")
```