Scott and Nick, thank you very much for your help!
I am now using the following command, to save the test result in a
variable:
gen test=r(t)
A really bad idea. Say that you have 150 000 observations. Do you
really want 150 000 copies of that particular number? Save it as a
local macro, or a scalar, or as an element of a matrix. It is often
very useful to use matrices to store results from a whole set of tests:
e.g.
mat testres = J(5,3,0)
mat list testres
qui {
forvalues i = 1/5 {
reg price if rep78==`i'
test _cons = 8000
mat testres[`i',1] = r(F)
mat testres[`i',2] = r(df_r)
mat testres[`i',3] = r(p)
local rn "`rn' rep78_`i'"
}
}
mat colnames testres = F den_df p_val
mat rownames testres = `rn'
mat list testres
There are probably more elegant ways to achieve this in Stata v9, but
this will work in Stata v8.
If you are using ttest rather than test, just change the r() values
accordingly.
