I am using the user-written esttab command from SSC to generate table output. I am trying to plot a regression coefficient and standard error, and the mean of the dependent variable in the column beside it. Unfortunately, none of the solutions I could come up with produce the output I am looking for.

In principle, this produces the desired output. But it also plots a standard error and significant stars for the dependent variable mean, which I want to omit.
Code:
sysuse auto, clear
eststo: reg price mpg
eststo: mean price if e(sample)
esttab, keep(mpg) ren(price mpg)
This plots the dependent variable mean in another row, and renaming it produces an error:
Code:
sysuse auto, clear
eststo: reg price mpg
sum price if e(sample), meanonly 
estadd mat ymean=r(mean)
esttab, cell("b ymean" "se")  
esttab, cell("b ymean" "se") ren(c1 mpg) keep(mpg)
This solution would work as well but the cell command does not recognize the r(mean) from using estadd ysumm:
Code:
sysuse auto, clear
eststo: reg price mpg
estadd ysumm
esttab, cell("b ymean" "se") keep(mpg)
Any help would be much appreciated.