Adrian de la Garza <[email protected]>:
One solution is to make the tab using an estimation command. The
coefs and SEs are available after estimation commands as matrices and
as scalars (see [U] 13.5 for the latter, and also try -eret list-
after any estimation command for the former). Here's a variety of
illustrations:
sysuse nlsw88, clear
tab collgrad ind, row nofr
proportion ind, over(coll)
mat li e(b)
test [Mining]_b[_subpop_1]=[Mining]_b[_subpop_2]
g one=1
svyset [pw=one]
svy: tab collgrad ind, row se
di _b[p24]
di _se[p24]
test _b[p22]=_b[p12]
mat b=e(b)
mat b24=b[1,"p24"]
mat li b24
mat V=e(V)
mat V24=V["p24","p24"]
mat li V24
di sqrt(V24[1,1])
[The se option on svy: tab is not optional; if you leave it off, the
e() results will contain cell proportions instead.]
The matrices and _b and _se variables work the same way after
regression or other estimation commands.
On Thu, Feb 28, 2008 at 12:50 AM, Adrian de la Garza
<[email protected]> wrote:
> (a) Suppose I create the following table:
>
> tab jobclass sex, row nofreq
>
> | 1 2 | Total
> -----------+----------------------+----------
> 1 | 97.35 2.65 | 100.00
> 2 | 73.53 26.47 | 100.00
> -----------+----------------------+----------
> Total | 77.61 22.39 | 100.00
>
> is there a way for me to save one of the values in the table to a variable or scalar? For example, suppose I want to create a variable x equal to the value contained in cell (2,1), x = 73.53. How can I do this?
>
> (b) Now, is there a way to save the whole table above to a matrix? Hopefully, without having to do (a) repeatedly many times?
> And one more question: if I do something like
>
> reg depvar var1 var2 var3 var4
>
> I will obtain the regression output that Stata provides. Can I save the stuff in the regression output to other variables? For instance, if I want the estimate and the standard errors of the coefficient of var3, and I want to put them in a scalar x1 and x2, respectively, how do I do this?
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